Stabilitrak and traction control light going off with blinking check engine light and rough idle

10

Asked by Aug 22, 2017 at 05:21 PM about the 2007 Chevrolet Silverado 1500 LTZ Crew Cab 4WD

Question type: Maintenance & Repair

From everything I've read this
seems to be a common problem
from the 5.3 with no resolution on
problem maybe somebody should
start a class action suit against
Chevrolet to fix this problem
where to recall.

81 Answers

70

ususally a flashing check engine light indicates a misfire, best to have the codes check first and see which cylinders are misfiring, could be something as simple as spark plugs or a loose vaccum hose, same with stability trac, module needs to be scanned for codes first

2 people found this helpful.
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So read the codes and everything and it came up P0 300 which is a general misfire went through switch coils two different cylinders coils are okay went through disconnected injectors one at a time until engine stuttered. Cylinder 7 no change when disconnected ordered fuel injector we'll see if cures problem

1 people found this helpful.
70

p0300 indicate random cylinder misfire, usually the cause is 2 or more cylinders misfiring, if you know someone with a higher end scanner that does live data you can actually see which cylinders are misfiring in real time (makes things a lot easier).

1 people found this helpful.
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The biggest problem with cylinder 7. Cylinder 2 had an occasional misfire so replacing both but definitely not as bad as number 7

10

And we were looking at it live as it was doing it with the scanner.

10

Two new fuel injectors on cylinder 2 and cylinder 7 all new plug wires and plugs and new coil pack on 7 problem solved runs great

50

Mine was a chewed through wire on the #2 coil pak(the red wire), stabiltrak and traction lights, DIC indication of both off, flashing check engine light, rough idle hard 1-2 shift.Repaired the connection and all is good so far.

5 people found this helpful.
250

I am having the same issue with the Stabilitrak. The light came on it is idling real rough and there is a ticking noise. I have searched and searched and this seems to be a common problem I have contacted a lawyer who represented the Dex Cool case back in 2008. I need help getting this thing going so please contact me on here. I had my motor rebuilt in 2015 because I lost compression on number 7 cylinder I spent over $3,000 having the motor rebuilt. Let's get this thing going because GM is aware of this problem and has done nothing to help resolve it so the more people we get the better case we will have. I cannot afford to have my motor rebuilt every few years and I am not going to pay to have a motor rebuilt that only has 27,000 miles on it.

15 people found this helpful.
250

Please help me get this going. If enough people come together then we can get these issues resolved. I've already contacted an attorney. Email me Chrisdmc2075@gmail.com

8 people found this helpful.
50

Am having same issue with my 2012 Silverado. I can disconnect the battery and after re connecting it when I start the truck all seems normal until I put it I drive and the stabilitrack, check engine light come on and the engine runs very rough. The truck is currently at the local chevy dealer where I bought it in 2012. They basicly want to rebuild the engine but I can’t afford the expense. Seems to me that if every thing resets after disconnecting the battery there mst be a simple solution with out replacing everything and hoping it solves the problem.

5 people found this helpful.
250

I replaced the plugs in mine and so far it's been ok but I know there's more to it than just the plugs. Email me at chrisdmc2075@gmail.com. I've talked to a lawyer so get in touch with me

2 people found this helpful.
40

I had Stabilitrak and traction control lights along with flashing check engine. The idle was rough. Problem is one of the variable lifters is stuck. Pulled the valve cover and one wasn't working. Costly job to repair.

4 people found this helpful.
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Hey, I recently had my 08 Silverado ls having bad shifts like, only shifting if I take the foot off the the gas and hit it again. The power is too low doesn't go over 60miles and blinks the check engine and traction control lamps every time I try to overtake. Can somebody help please?.

2 people found this helpful.
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exact problem as stated in the title and had ignition coil 7, spark plugs and plug wires replace now all is back to normal

1 people found this helpful.
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My car (2015 Traverse) did this same thing today for the second time in 2 weeks. While accelerating (maybe 40mph at that point) the stability/traction control flashes and states that its turning on and off, while the check engine light flashes. Power is obviously lost and the car is no longer accelerating/is acting funny. Kind of scary, especially with my kids in the vehicle! Both episodes lasted maybe 1 minute total, then the car is fine. I took it in to our certified dealership and they couldnt find the issue. They said 1 cylinder showed a misfire, but they arent sure why. They did look at the spark plugs and said those were fine. I did call GM corporate because I noticed this seems to be a common GM issue......anyone have a REAL fix for this issue?!

1 people found this helpful.
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Same problem here. Dealership said a bad lifter on cylinder 7. Seems unlikely, and they want $4,000 to repair. Hoping to find out more soon.

1 people found this helpful.
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2014 GMC Sierra 1500. As of last night, it is showing the exact same symptoms as others have listed. Rough idle, stabilitrak light on, flashing check engine, rough shifting, and a loud tick coming from the driver side top of engine. Fired it up this morning after disconnecting the battery, and while the tick is a little quieter (not by much), all other symptoms remain the same. Add another one to the lawsuit. I won’t be spending $4k+ on a rebuild as I haven’t even made my first payment yet. (Looks like I should have kept my perfectly running Duramax w/ 340k Miles).

3 people found this helpful.
20

Our 2008 Suburban just started doing this. Check engine light flashing, stabila track on screen. I replaced all spark plugs and wires. No change. I don't have buckets of money to throw at this. The government shouldn't have bailed out this shady company. They should have failed just like other businesses. Never again Chevy.

2 people found this helpful.
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got a few other opinions on mine, and verified it is somewhat common for the lifters to fail on these. Mine has 118K miles, so I guess i'm glad we made it this far. Luckily I found someone who used to work at a dealership who can help with the repairs for much less than what dealership wanted. Could be worse I guess? Good luck everyone!

10

I have a 2008 GMC Serra. I have a similar issue: the stabilitrak and traction control light come on and the check engine light flashes every time I press the eccelerator about half way when going up hill. Has anyone had the same issue?

1 people found this helpful.
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I have a 2010 Silverado, and had this happen twice. First time was a bad spark plug. This time, all spark plugs are in good condition. Waiting for family member to bring a scanner. Guessing it will say misfire somewhere. Chris, I'm in.

2 people found this helpful.
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I have a 09 Silverado 1500 just recently started the rough idle service stabiltrak and traction control. All happened at the same time kinda weird

3 people found this helpful.
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I have the same issues as the title. I had this issue once before about 3,000 miles ago and the dealer replaced my spark plug and that fixed the problem. Now I realize that isn’t the root cause of the issue but if that’s the only thing that’s going bad is it better for me to spend $1000 on spark plugs over the life of the truck and just replace them myself every 3,000 Miles or spend $4,000 on fixing the root cause of the issue? Obviously I’m not happy with this but does anyone know of any other issues this is causing other than the spark plugs to go out?

2 people found this helpful.

I have a 2014 Silverado 5.3L V8 with 39k miles. A couple months ago I had check engine light with code P050D, cold start rough idle. I’ve tried every cheap fix...higher octane fuel, seafoam thru the tank and throttle body, cleaned mass airflow sensor. Truck has idled rough for awhile... dealership shimmed the engine mounts, but it didn’t fix anything. Now I’m getting the flashing CIL with the stabilitrak on briefly when I start it. My Bluetooth OBDII scanner shows a misfiring #6 cylinder, which has gotten worse over the past week. Code P0306 is now present with the P050D. I’m hoping it’s just a spark plug or fuel injector at worst. A 39k mile truck shouldn’t have misfire issues...unacceptable for a vehicle that costs as much as it does. Most annoying thing is that it takes a lot of trial and error to diagnose and finally fix, which can mean several trips back and forth to the shop when they think they fixed something but actually didn’t. My plan is to have a local repair shop test for plug or injector issues since I’m out of bumper to bumper warranty by 3K miles, ugh. If it’s still a problem, I’m probably looking at an AFM lifter issue. That would fall under the powertrain warranty, and GM can pay for the repairs and loaner truck instead of me while they fiddle with it for who knows how long.

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Hello guys I'm back on the road after a month of try and error and finally I got to the problem!. All scanners will tell you some code always but the problem comes with miscommunication btn the ecu and it's sensors. You just need a system reboot simple!

3 people found this helpful.

Same issue out of the blue. I am going to have the code read today but it is under extended warranty so hopefully the dealership will fix it.

2011 Silverado 1500 with 5.3L. Rough idle, only occasionally the stabilitrak light comes on. Scanned and got the same P0300 code. Going to swap plugs and wires for now and see if that will help out. I'll try and scan live data one of these days and see what I come up with.

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I have an 08 Sierra 6.0. Same issues. Tried plugs and wires with no fix. Codes are the same with misfires. The first time this happened it was cylinder 1 misfire. The sound and way the engine was running I knew it to be the lifter but my ten year old truck with only 80k miles should not be having this issue. Took to dealer and they said 4K to change all lifters or 7k to replace engine. I’m not a newby around engines so I changed the AFM lifter in cylinder 1. The truck ran like a dream. Then 7 months later cylinder 7 AFM lifter went bad. Guess what? Two months later it’s doing it yet again for cylinder 1. If this is going to be an issue for everyone that has these series of trucks then I suggest y’all sell your vehicles and get something else. This problem isn’t going to stop on the first fix it seems.

I have same problem on my 07 silverado, code for stabilitrak problems and fuel injector 8; this the third time time happen, I has replaced the brake light switch (29.95) each time before, this always seem to work, it restored curse control, brakes light,lack of power,rough shifting,and stabilizing service message, reset code and no more engine light, until next time, I have posted many time on craiglist to sale this junk, I purchased a Ram in 2010;found it hard to recoup the $23000, out the Chevy thinking of giving this headache to my oldest

2011 Cruze, been back to the dealership THREE times with this same issue. Four months ago they said they replaced the coils, plugs, etc. Sunday (two days ago) it did it once again. Car doesn't seem to want to shift when this happens. Extended warranty just expired (go figure). Suggestions.....

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I have this issue as well and this isn’t the first time! A year ago I had to have 2 cylinders rebuilt the dealership I bought it from said it had 2 dead cylinders the first time the problem would come and go then it stayed till I paid $3500 to have the 2 cylinders rebuilt last night it happened again! 2007 Yukon 5.3 I was told by the dealership that it is common with the engines that shut down cylinders when at a steady speed! Mine goes from V8 mode to v4 mode! I was told it is a design flaw and I should have had that shit off when they rebuilt it because it has now caused the same issue! I feel like if it’s a design flaw and a known issue than the should offer a recall but there is so many of these engines out there they would go bankrupt

3 people found this helpful.
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2015 Silverado LT True North, driving today in town, all of the sudden engine shows signs of light choking, a few hundred meters after choking increases, and orange enfin light goes on, pulled to the sideway right away and turned it off. Got towed to GM dealer, tomorrow Ill have news, I hope is not the same issue everyone is describing here, though I did not see a Stabilitrack light going on mine.......

1 people found this helpful.

I have a ,2011 gmc serria sle same problem you guys are having I have changed all my lifters,spark plugs,coil packs ,wires nothing has changed, BUT I have a great fix soon as I can will trade for a NISSAN

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I have a 2013 Chevy Silverado Z71, 8 cyl, with about 121,000 miles. Last month I very foolishly let the oil get about a quart low (had never been low before), and ended up spending 1600 to have lifters fixed, cam shaft broke, etc. When I picked it up after repairs, the traction light and stabilitrak lights were on, and the mechanic said the computer had to re-learn, and the lights should go out. They haven't gone out, and the fuel sensor (maybe it's check engine light but indication from machine at Advance Auto said a fuel sensor needed replacing - bought a part but haven't had it installed yet) light came on (it has before, but I filled the tank with ethanol free fuel and added a fuel cleaner). The light went off for a few days but came back on. Yesterday the light started flashing, and the engine started knocking like crazy. I was about 10 miles from home, so I drove it home and let it cool. It sounded just like it did when the lifters went, so I was afraid the oil had gotten low again - it was fine. I'm 16 miles from civilization - is it safe to drive it that far? Can't afford a wrecker!

1 people found this helpful.
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Dont drive it and have it towed to GM authorized service is the best thing you can do.

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Have a 2012 Chevrolet Silverado with these exact symptoms. Friday while running errands, check engine light started flashing, stabilatrak sensor started going nuts and the traction control was turning off and on. There is no knock but definitely a misfire or loss of power. Dont even know where to begin and dont have the money to fix it. Any advice?

3 people found this helpful.

Interesting. My 2016 chevy cruze, 31,000 miles just had the hesitation issue with check engine light and service stabilitrak message. I bought used last year. Still have bumper to bumper. The dealership couldn't get the problem to reoccur and even with code they couldn't find anything wrong. Sigh.

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I have the same problem, flashes service stabilitrak, service traction control, check engine light. I put my bluetooth code reader on it and get the P0300 code (random cylinder misfire) but didnt think too much about that, I just put some Seafoam fuel system cleaner in it but the problem only got worse. Then I get service stabilitrak message before even putting it into drive, just idling. I thought the stabilitrak message had something to do with the wheel sensors, steering angle sensor, accelerator pedal sensors. I checked all of those and everything worked fine (used a scope on wheel sensors etc.) I found out thru these forums and thru my local GM delaer service department that the service stabilitrak warning comes on for other reasons, like P0300 so that got me looking at other issues. What a waste of time, if its not a stabilitrak or traction control error why send a guy on a dead goose chase. So its idling rough and when driving has low power and limited to maybe 3000 rpm. I replaced sparkplugs, no change. cleaned MAF , no change, checked for vacuum leaks , none detected. My scanner shows Fuel system would not go into closed loop mode. I found out that it was miss firing on all bank 1 cylinders, particularly cylinder 7, bank 2 cylinders were perfect.. swapped coils and coil wires with another working cylinder, no improvement and no change. Removed fuel rail on bank one and ran some Seafoam directly thru the injectors by energizing one at a time and using compressed air, all those injectors sprayed good, I marked them and put them in different spots to see if my problem moved , slight improvement at first but short lived. Problem did not move. cylinder 7 still the major missfiring cylinder. Replaced upstream oxygen sensors, it now goes into closed loop and runs longer before getting the stabilitrak error so that helped but it still screws up just not as fast. I get a negative number on bank 1 long term fuel trim (last check -3.1)and a positive number on bank 2 long term fuel trim (last check +3.9) so it appears that bank 1 is running rich and bank 2 running lean, which bank 1 would do if it was missfiring on that side, but what came first the chicken or the egg? Is it over correcting for what it thinks is a rich mixture and then causing lean missfires or was it really rich because it was missfiring all along? For it to be rich it would have to be 1. high fuel pressure but both side see the same pressure or 2. restricted air flow but again both sides get air from the same source 3. Missfiring causing the fuel not to be burned as it leaves out the exhaust. I can't detect any vacuum leaks or exhaust leaks, at least if they are there they are not very obvious. another thing I have noticed is that it can sit there and Idle for 10 minutes without missfiring but once I rev the engine and it coasts back down to idle speed (sometimes I have to rev it up several times ) it will start missing and then turn on the service stabilitrak message. Any help would be appreciated.

2 people found this helpful.
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Sorry but on my last post I forgot to say that My truck is a 2007 GMC Sierra 4.8l engine with around 87,000 miles.

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Sell and Sew. So unfortunate when an Iconic American brand won't standup and support the customers when it's clearly called for. There's an engineering flaw that makes this such a common issue. My 09 Avalanche is experiencing these issues short of 110k soft miles.

1 people found this helpful.
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Update: a friend of ours had a scanner so we scanned it Wednesday night, came up as a misfire on cylinder 7 and of course here was the culprit. Husband pulled the plugs Thursday and by Friday night we had them all replaced. 130$ later and all lights have gone off and truck runs better than she ever has. Hope your problems are all as simple as ours!!

2 people found this helpful.
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Unfortunately no mine is not that simple, replaced all the plugs etc.. but its helpful to know that the stabilitrak light comes on when you have a misfire for sure. I wasnt sure what actually came first, did it miss because stabilitrak was reducing power to prevent sliding or did a missfiring cylinder cause the stabilitrak light to come on. My missfiring did not start until the stabilitrak message came on. thanks for the input

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My check engine light and misfire came first then the stabilatrak sensors and reduced power. Apparently if there is a big enough misfire, it causes an imbalance or shimmy in the front end due to the engine rattling, this causes the stabilatrak to sensor. As soon as the new spark plugs were in, everything else went away. I'm so happy now, even threatened my husband to trade It in but it's my baby so I'm glad it was a simple fix.

This is just crazy reading all this. Just lost my job cause I still couldn't fix this and not enough money to get it into a shop. Changed all plugs and wire, checked the injectors found they had been replaced before I bought it so now I assume this had happened to this truck before. But now after that I get multiple misfire and now a ecu sensor code and will not even start now... Someone said a coil but now do I take the risk spending more for a truck that now won't even start.... And it seems nobody is getting the ecu sensor code like I am, am I missing something simple? 2011 1500 Silverado 5.3l, if I just put power on all the lights kick on again even after an erase of codes don't even have to start it again as it won't even do that

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I have an 07 avalanche with a 5.3, it has about 180k miles and occasionally got the service traction control/stability trak and hard shift from 1st to second. The check engine light has turned on with the mentioned above and when it has I was also told it was a misfire on cylinder 1 and a slight misfire on 7 however my check engine light is not always on. I never fixed anything and It had been a while since the check engine light, stability trak and traction control lights had turned on until I recently purchased a new battery for it. Isnt this weird? Since the new battery was installed my check engine light has not turned off and I get service trac control and stability trak messages constantly going on and off. Could it be something electrical? Why would my new bat trigger this? I did look for leaks and checked all wires but I see nothing obvious, I would really like to get this fixed because when non of these lights are on, it runs great.

1 people found this helpful.
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So, update on my issues. I will have to buy a new engine. GM will not help and if your vehicle is not worked on by GMC certified folks for regular maintenance then they will definitely not help by any means. Will never by GMC truck again. Let GM know the issues you are having, so hopefully they finally do something about all these problems.

2 people found this helpful.
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Same exact problem...2014 Silverado LTZ Crew Cab 4x4. Just this morning coming into work, got flashing check engine light, and stabilitrack light. Ran Onstar diagnostics and they emailed me a code P0300. Also said anti-lock brakes? Maybe that’s the stabilitrack light? Truck has about 86,000 miles. It also ticks on the drivers side top of engine. Add me to the lawsuit!

1 people found this helpful.
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Okay, so here’s where I am now. I started the truck after a few hours of it sitting, and still running rough. Popped the hood and noticed the number 3 cylinder plug wire was hanging...it had come loose and fallen off the coil, still connected to the plug. No doubt this is why it was misfiring. I shut off the truck and looked at the plug wire, inside where it snaps onto the coil. White powdery corrosion, no doubt because of the two dissimilar metals touching, with heat and electric current hitting it. After snapping the wire back in place, i started the truck and headed home for repair, only the check engine light was on, and it was steady on...no blinking. So I replaced all plugs and wires, and disconnected the battery in order to reset the check engine light. Currently the truck is running smooth, and no apparent ticking anymore. Thinking the ticking was actually the sound of the spark hitting the plug wire right where it was corroded. After two drives, totaling about 30 miles, no check engine light yet. Am debating on replacing the number 3 coil since there was corrosion in there, actually the plug wire snap fell apart when I removed it from that coil. But, that was the only wire that was corroded anywhere...still replaced them all, so we shall see. Fingers crossed, I’ll keep you posted.

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Chris I’m in.. emailed u from ehrivera2@yahoo.com.. I have a 2010 Silverado 5.3 and was told it was gonna cost me around 4000.00..

1 people found this helpful.

Just had this same issue happen in March 2018, dealer said misfire cylinder 1 changed all plugs, was fine until May29,2018... Back in dealer this morning fearful of their findings. Told possible oil leaking into cylinders.. BS... I will join the lawsuit list. truck 2010 Silverado only 92,000k on it and was well taken care of. this sucks.

2010 GMC Yukon Denali Replaced All lifters 4 months ago and today check engine light flashing, stabilitrack light on and idle rough!

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!!!!!!! Time to celebrate (I think) Truck back on the road !!!! Update from my earlier reply about my 2007 GMC truck with 4.8l engine.with P0300 Service Stabilitrac, Service Traction control and Stabilitrac Off etc.. I suspected my catalytic converter was causing back pressure so I disconnected the flange on the driver side and created enough gap to allow exhaust gasses to escape without back pressure. It made no difference engine still missed, I reset all codes unless something was causing the problem in the computer. Tried it again and it still missed P0300 and stabilitrak off, service stabilitrak etc.. Now heres the strange part --- when I put the flange back on and cranked the truck the missfiringing was gone and all the other issues were gone , no codes no flashing lights, engine ran perfect but it was rattling in the catalytic converter. I thought maybe I had dropped something in the converter pipe so I took the flange loose and inspected the pipe with a mirror but there were no foreign objects in the converter or pipe as far as I could see and I was able to account for everything that could conceivably have fallen in ( 3 nuts and gasket etc.).. It still rattles but works perfect and runs better than it has in a long time. I suspect that when I removed the nuts from the flange they were frozen and I had to drive them off with a hammer and chisel. This must have broken the insides of the CAT and created better flow and the broken parts are now rattling. I drove it to work this morning and it worked perfect and had plenty of power, I do now have a code P0420 which means the converter efficiency is low, that doesnt surprise me though. If it werent for the noise I would probably leave it alone but I am going to go ahead and replace both cats and be done with it. I do want to stress one very important lesson I learned from this ordeal, "Service Stabilitrac" should have never been displayed It could have just said "Stabilitrac Off" because it was not able to work properly under the conditions with my engine missfiring but It clearly said to service the stabilitrac system and to service the traction control system. This stupid message wasted a lot of my time on a wild goose chase when the real problem was just the P0300 code and a random missfire on bank 1. An exhaust back pressure gauge would have been a nice tool to help me diagnose this problem. Note, it was not clear to me but I hope I can help other DIY guys by saying that P0300 Random missfiring turns on the Service Stabilitrac message not the other way around, I was confused because my truck would sit there and run fine for 10 minutes at times and then the Service Stabilitrac message would come on along with the audible warning dings etc then my truck would start missing so I really thought the Stabilitrac system might have been causing the missfiring and P0300 because I had read that Stabilitrac actually reduces power by cutting the pulses to the injectors on certain cylinders. Hope this helps somebody else.

2 people found this helpful.

08 GMC Sierra had misfire - no one could figure it out at dealer ship, finally I took valve cover off to see if it had valve train damage and found a broken valve spring. Replaced and misfire gone.

2015 GMC Yukon XL SLT 5.3 with the same flashing check engine, stabilitrac lights, rough idle, hard shift 1-2. It had 46k miles the first time, yes I’m on the 2nd round of this issue just 3 months later. Under powertrain warranty, dealer replaced a ‘collapsed lifter’ the first time, my belief it was unnecessary because before picking up they had to replace an arcing plug wire, which would cause a misfire. This second time, a different dealer is replacing all lifters, said the same lifter that was previously replaced was again broken. There was no ticking in the engine that you would get from a lifter issue in either occasion. The problem occurred both times under the exact conditions, at the exact same intersection, making the exact same left turn, slightly uphill, and hard accelerating in the exact same way. I don’t believe it is actually a lifter issue, but more something triggered by sensors and the stabilitrac engaging. I know I’m stuck with a vehicle that will repeat this problem over and over again. I have yet to contact GM, but plan on doing so tomorrow, also when I’m due to get my car back. I’m not holding my breath though. I’ve read about so many issues with these 5.3 engines, it’s unbelievable that there hasn’t been a recall.

Chris, I am in as well. I have a 2014 Sierra with 65'K miles. This happened last night. Called GM and they sent a wrecker to come pick it up just now under the power train warranty. Flashing check engine light, stabil track light steady on, ticking from motor, and rough idle and shifting 1-2. Curtis.house@hotmail.com

I have 2012 Silverado Z71. Same as everybody stabilatrac and trac light. I found out if u run anything but 93 octane in it it fowls the plugs witch for some reason causes this loss of power because of the trac/stabili light. I diconnected battery for a few mins hooked it back up went straight to the gas station and put 93 octane in it. Running fine for now. Forgot to say only put 87 octane in it cause happened to be the station i stopped at didnt have 93 so i had no choice but to put some 87 in it. I know the plugs are all shoot as well after running $20 of 87 thru it. Add me to the lawsuit please!

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2008 Chevy Suburban, same issue. Replaced brake switch sensor no fix. Seeing it could be catalytic converter, plugs, malfunctioned wire, fuel injector, collapsed lifter. Count me in Chris. Creel.nicole@yahoo.com

Same issues as many on 2009 Silverado 5.3L, P0300, misfire on cylinder 7, rough idle, hard shift 1-2, and the constant service stabilitrak and traction control with both turning on/off. I'm in. jaydencse@gmail.com

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I am having the same problem with 2012 Impala. Service Stabilitrak, Check engine light, runs like crap and code says cylinder 2 misfire. Afraid to go spending $ on something that seems like it may not have a fix at all. On another site someone posted about these being "phantom" problems with the acutal problem being computer/electrical.

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It most likely has a simple fix, I learned that the flashing check engine light probably means its missfiring, obviously yours is missfiring on cylinder 2. I went thru everything on mine because the message " Service traction control and Service stabilitrac" came on, it had absolutely nothing to do with those systems, it was a stopped up Catalytic converter. See my earlier post. I have 2 friends at work that had a similar problem but theirs had a bad sensor and didnt cost much at all , one was less than $200 to fix but they could not remember the name of the sensors. Its most likely not a phantom problem but anything from a bad plug. coil, coil wire, catalytic converter, fuel injector, vacuum leak etc.. Since its missfiring its most likely engine related and has nothing what ever to do with traction control. One clue on mine that I had missed was that in the early stages of my problem was this, it was only doing this when I was climbing a hill and the engine was under a heavy load. this caused the exhaust back pressure from the stopped up Cat to cause engine missfiring. When this happened I ran a can of Seafoam thru the tank which just made the problem worse. After the Seafoam cleaned out all the carbon it finished off what little was left of my cat by dumping all the that carbon down the exhaust and stopping up the Cat even more. After that I could not even back out of the driveway before it started flashing the Service Stabilitrak etc... Does yours idle ok if you crank it and never rev the engine?

08 Avalanche w/ 80000 w/ stabilitrack and check engine light. Mechanic's new $8000 determined that misfire on cyl 2 was only happening < 1200 rpms. he said i'd have to go to the dealer (i've known him for 40 years, worked with him swapping motors at night in the 90s and i was even at his wedding). wasn't plug, wire or injector. i DO have an extended warranty so this should be fun. (sarcastic). add me to the lawsuit .. rawbobb@gmail.com I can't get a PA inspection in August with the check engine light on :( .

Same deal with mine, replaced all lifters 40,000 miles ago and now stabilitrack if off and running rough with the ticking. Add me to the lawsuit as well, laban@highseasproperties.com

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Two days ago I pulled out of my driveway. By the time I hit the corner 1/4 mile away my check engine light was flashing and the Stabilitrak light was on. Truck ran really rough, was obviously not running on all cylinders and was not shifting right. Took it home, let it sit, started it up and could hear the dreaded noise of a faulty lifter. Towed to GMC dealer today - sure thing. #7 cylinder lost compression due to a faulty lifter. Everything is being replaced under my powertrain warranty but I fear this is going to be an ongoing issue. 2015 GMC Sierra 6.2L motor with 78,500 miles

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Here you go.... https://www.autocodes.com/uploads/gmc/SB- 10078567-7690.pdf

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Here’s the technical service bulletin. They know damn well it’s a problem...

2 people found this helpful.

So i got an email saying that Greg Henderson posted a TSB for this problem. I can't find that link for the life of me anywhere. did anyone else see it? it's not here in this thread. I'm going to the dealer monday morning and could probably use it. thanks in advance. if someone has the link to the pdf, please email me at rawbobb@gmail.com. thank you.

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It's actually right above your comment.

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So...from the beginning. My 2012 Impala had the traction control issue and we had to rewire that. Then the “service Stabilitrak” light and check engine light came on and the car had rough idle. Computer said Cylinder 2 misfire. We checked the spark plugs. Cleaned all the connections. Used seafood. Etc. Took it to shop and they cannot figure out exactly what is wrong, but something bad...they said they cannot take the heads off and doubt the the dealer can either and we are pretty much screwed. The car needs a new motor. It is 6 years old!!!! It is the first car Inhave ever bought brand new and is is worse shape than all the older cars we have. Whatever is causing this to happen should have been recalled, but I don’t think anyone actually knows the cause...

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2015 5.3 Silverado same issue flashing engine light stability light on. 64000 miles bought used last sat not 400 mile later started doing all this. Dropped back off at dealer yesterday. My codessid cylinder 7 misfire did all tricks to see any change but no. So add me Chris to lawsuit. Kellycjarrett@gmail.com

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Wow, just wow....This many people? I wonder if this is news worthy in order to get GM’s attention? This is unbelievable. I also wonder when I get my truck back on Monday if they are putting the same garbage lifters back in it, or if they have actually engineered a modified part that resolves the issue??? One thing I know is that AFM is getting turned off in my truck when I get it. Talked to several mechanics and motorheads who said this is the FIRST thing they would do.

1 people found this helpful.
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Just happened to me. Engine light on, stabititrack flasking and very rough idle. 2013 Suburban 5.3L with 123,000 miles. Code was 55,000 misfires on cylinder 7. Also it is burning a quart of oil every 1,000 miles. Dealer told me that it needs either a $5,000 engine rebuild or a $7,500 reman engine. I complained that it was burning excess oil for over a year now to the dealer. They knew it was a ticking time bomb. No more GM's for me.

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Jason - though the work I had done on my 2015 6.2L Sierra was under warranty I had them put together an estimate to replace all the lifters on the #7 cylinder side which is what they did and it was $3k even so I’d question that $5k figure - this was at a GMC dealer in Minnesota

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Same problem here on 08 Tahoe. Currently in shop. Has anyone had these problems stopped by turning off AFM? That’s my next step. Curious to see others answers.

1 people found this helpful.
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I’m turning my AFM off with a Diablo i3 Platinum tuner - just waiting for the device to arrive from Amazon. Then I’ll create a log and send it in to have a custom tune created and loaded into my truck.

Going on second engine rebuild for my 2008 ch by Silverado.... being told it was running lean therefore burnt up the f****** engine. I am toning on two years owning His 1500 lt bought it with 100,000went on fishing trip came back with ticking noise and slight knock we were told we had metal shavings in the oil... rebuilt 5,300 later. And 17,000 miles later I’m rebuilding it again... we had it in to the shop three times and they s not us away yet I knew something was not right and I’m not even a mechanic I just pay close attention to my vehicle. Not happy at the idea of a rogue problem but sounds like lots of us have a serious problem that GM NEEDS!!! To address Running peoples lives into the ground is a way to build a horrible rep. Have grown up Chevy but am more or less scared away and will be heavily researching other options at my next buy if we are not bankrupt from a engine rebuild every 15-20,000 miles

I have 2012 Silverado the service stabiletrac and traction control message and abs light came on today.

2009 5.3 Silverado. 102k miles on her. Same issue. Ad me to the lawsuit Prandallm@yahoo.com

My 2007 Tahoe has experienced just about every single issue listed above over the last 2 years. Here’s a list of the issues I’ve experienced and then I’ll list everything I’ve done to attemp to fix it: Service Stabilitrak, Service Traction Control, Cylinders 1, 7, 6, 8 misfires with 7 being almost weekly for 2 years. Check engine light comes on when a cylinder misfires accompanied with Service Stabilitrak and Traction Control. Tahoe idles rough, shifts really hard from 1st to second gear. Catalytic converters inefficiency. What I’ve done to attempt to fix this issue for 2 years: Changes plugs and wires, changed valve cover, kept changing cylinder 7 spark plug every 3 months(this worked until recently the issue happens daily), changed brake switch(didn’t help anything). I cleaned the Throttle body ad this seemed to help the length of time between codes thrown. But still experiencing same issues. GuruWK39C Your posts sound spot in with what I’m experiencing. I did just(1 year ago)have the drivers side Catalytic Converter replaced with an aftermarket Cat and have still had same issues. I’m wondering if the aftermarket catalytic converter allows a smaller amount of airflow and causing the Cylinder 7 misfire. I’m about ready to make a YouTube video of “How to fix a Chevy” and video me rolling it off a cliff. I’m hesitant to buy my Duramax now.

We have an 08 Silverado 5.3 doing the same thing with the stabilitrak off and check engine light flashing. Sign me up Chris.

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Preston, I replaced my Cats with Magnaflow after market units and welded them in myself. They are both working fine and I havent had any new codes since replacing them. When I removed the old ones it was clear that the driverside was clogged up with something, I said carbon in my earlier post but not really sure what it was. One thing I highly suspect is that using the Seafoam finished off an already partially bad Cat. (I'm not knocking Seafoam but it seemed to finish off the bad Cat because prior to that it would only screw up when under a heavy load.) It does sound like you have the same problem. With mine cylinder 7 which is the last one on the driver side was always showing the most missfires, I think that was due to the pressure backing up from the other 3 driverside cylinders making 7 the most susceptible to the clogged Cat.

2015 5.3 silverado hard shifting at low rpm, shuddering, flashing check engine and service Stabilitrak light on. Just happened on my way home tonight. Sign me up if you get a class a tion going . Roger.b.gentry017@gmail.com

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