Oil light


Asked by Jun 04, 2017 at 10:03 PM about the 2006 Hummer H3 4dr SUV 4WD

Question type: Maintenance & Repair

My 06 hummer h3 is marking the oil light.
It usually doesn't turn on until the engine has been
running a while and warmed up. I've noticed it only
comes on when I come to a complete stop and
need to accelerate again but only on take off. I let
off the accelerator and the light goes off and stays
off once I'm in second gear I suppose (it's an
automatic) I recently changed the oil. I think it's just
low oil pressure. I constantly check for oil leaks and
if the engine burns oil but nothing. The oil is there.
Could it be a faulty sensor? Perhaps the oil pump?
It's running on 5w-30 maybe thicker oil? I need to
get to the bottom of this.

17 Answers


More and likely a bad oil pressure switch. I would still check with a oil pressure gauge to be sure.

1 people found this helpful.

MY 08 hummer h3 also has this problem, can you solve it? I already changed the oil I did a cleaning in the carter and I changed the oil pressure valve


Hi did you ever figure this out? I have the same problem with my 2006 H3 I just bought


I am having the same issue on my hummer, have u found any answers on what it could be

2 people found this helpful.

I have an 07 hummer and about 2 weeks ago started getting an oil pressure low alert when I had to suddenly slam on my breaks ! I just had the sensor replaced and as soon as I left the auto repair shop the alert started to sound again ! Now I will be getting more of an extensive look at the oil pump as now the alert does not stop at all no matter what the rpm ! I will post what I figure out Tuesday !

3 people found this helpful.

I’m taking mine in this Thursday. So far it looks like the engine is burining oil and at an insane rate! I’ll update here what they tell me. Hope this won’t cost me an arm and a leg!

I have a 2007 H3 and when the weather warms to 70 F the oil signal comes on. Last year I used 10W30 oil instead of 5W30, and it worked all last year. This spring the oil dinger went off again at idle. I'm not sure what to try next, maybe a cooler thermostat if they make them. The motor runs great otherwise. I think the problem is probably internal, sludge, or a weak oil pump. it has 135000 miles on it.


No one has even tired to fix mine yet. They all think it needs a new oil pump and that would be a large cost..

1 people found this helpful.

It does look like the real fix will be expensive, and extensive but I'm trying other alternatives before deciding what to do next.


My 2007 hummer h2 is currently in the shop , replacing the sensor did not work ( wasted 155$) I took it to another auto shop, a place that a bit more experienced with vehicles like ours and I have been informed that it is a bad oil pump which is going to cost me 1600$

1 people found this helpful.

NoGuRuHeRE0187...did replacing the oil pump fix the problem?


Hey guys! I have a 2007 H3 with 81,000 miles! I’ve had the same issues with the oil light. I have done everything y’all are looking into. Even the costly oil pump change . And guess what! That damn light came on AGAIN!!!! May I ask y’all what type of temp/region do y’all live in??? What I have gathered from all of my research and mechanic fees is the oil runs hot because of no oil cooler on these things which is breaking down and thinning out our oil! I live in Louisiana so our temps can get extreme. My next try will be 15w/50 to see if that stops the madness! Please any feed back is appreciated!

3 people found this helpful.

Welcome to the club. Have had this problem for 2years. Cannot believe that there has never been a recall on this seeing that this happens to every owner I have spoken with. Ugh


Hello! I had my oil light switch “reset” and they charged me $250 cad !!!! Just brutal. Anyways the problem is still there. I’m not sure what I can do next or if I should bother. Has anyone talked to GM? I feel like they should know what’s wrong with their vehicles.

Hello I'm having the same issues with my Hummer3. It's crazy. I've had a complete oil change n keep them up as required. But when we touch the brake that noise starts back right away. I sit on the brake n gas to just not hear it. I do believe we all need to reach out to GM. This is crazy that so many are having the same issues. I'm not sure if I can get back to the site but someone can text me at 502- 345-8968 if they find out we're gonna keep getting it checked to.

I got the same exact issue. I changed oils sensor, the ECM, and did an oil flush, and Nothing! My mechanic said it definitely is the oil pump, a $1300 job. The mechanic said the way around that rice was to change oil to 10-W40 for Winter time and or 20-W50 for Summer time. He said older cars require thicker oil, despite the dealer saying the opposite, because obviously the car is old. The dealer wanted to inspect the car at $145 Dollars per hour, not counting the work needed. the mechanic said that is their way of cashing in on vehicle owners. I did the 20-W50 last summer and the issue went away. No more shaking! When I went back for the 10-W40 for the winter time and the engine oil signal came back and so did the shaking and shutting off. The mechanic changed the oil back to 20-W50 and said to make sure the car is heated well before driving in the winter. The signal and shaking and turning off went away again. The mechanic did say that in the end the Oil Pump will need to be changed anyways, regardless and then into go back to 5-W30, but instead do 10-W40 (because again the car is old).


Hey Guys just wanted to give you guys and update. I completely forgot I ever posted this! It was a faulty Oil Pressure Sensor. I changed out 2 other sensors as well, I can’t remember which ones exactly. All I know is that this has been one of the most expensive vehicles I have ever owned. (Repair wise) we’re talking -Alternator -Battery -2 hub assemblies -Radiator -Front Differential -half Axle shafts -Air compressor All in less than a year haha

1 people found this helpful.

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