GMC Questions Maintenance & Repair

I Have A 2011 Acadia, And Problem With AC

For two years the passenger side was blowing hot air, driver side and rear were fine. With the hot weather upon us I turned on the AC to find both driver side and now passenger side blow hot air, re...

How Many Flat Grounds On A Gmc Sierra 1500

How many flat grounds are on a 94 gmc sierra 1500 with a 5.7 vortec

Crank But No Start, No Spark, No Oil Pressure At Key On

Alright you scallywags, you see the title. Van cut off on me in a parkin lot. Crank but no start, no spark no oil pressure at key on. Fuel pump is priming, in fact we just replaced the ICM, and no...

Why Are The Throttle Body Injectors Continuously Spraying Fuel?

We've replaced several sensors, fuses and gaskets as well as the distributor, but the throttle body fuel injectors are still constantly spraying fuel causing it to flood out. Does anyone know why?

Sometimes Cranks But No Start

sometimes when i crank it no start. release the key and tap it, it starts. other times it starts properly. new crank and cam sensors, good fuel pressure. don't know if there is spark because it is i...

Why Is Truck Only Starting Cold?

Changed plugs coils and wires truck will still only start cold then turn over and make whining noise seems like fly wheel spins and can hear fuel pump battery has 12.6 volts wondering if bad ground...

How To Get Vehicle Out Of Anti Theft Mode

I had my fuel pump replaced on a 2003 GMC Enovoy SLT and it went into anti theft mode causing not to start. How do I get it out of anti theft mode so I can start my vehicle?

Why Is The Right Side Passenger Side Heat And Ac Not Working

during day time its hot outside and the right side blow hot while ac is running on and then later at night outside is start chill and I turn temp up to warm while ac is running and then right side blo...

Why Is My Envoy Not Starting?

I got an Envoy I replaced battery,alternator,fuel filter,thermostat,spark plugs and coils now when I try to turn it on nothing.I get in and the security light is flashing after I try to turn it on ...

Fuel Pump And Gas Guage Not Working

Start A Replacement For 99 GMC K 2500

How do I know if my 1999 GMC K 2500 takes a if 500 takes a direct drive starter I need to replace it but I don't know what starter I need

Dic Light Not Working

The light in the middle behind the steering wheel on the dash. Shows mph and several other things. I think the menu button below the radio used to control it?

Running Lights Sometimes Work

I forgot to mention in my last question that also my running lights have been working sometimes and then sometimes they don't or sometimes they'll start working and I'll be driving and they start...

My 2001 Sierra Pickup Truck Won't Start

truck won't start. Can sitting for months not running it cause this problem

Envoy Will Not Start What Could It Be?

I replaced my battery,fuel filter,alternator,spark plugs,and camshaft sensor and it still won’t start the lights turn on and it sounds like it wants but no luck and when I get it jumped it takes a ...

Dropping Rpms When It Accelerated

Have 93 GMC Sierra 4.3 . When it gets up to about 55 it starts dropping rpms. Pushing gas does nothing. Have replaced plugs, roter, throttle body, fuel filter. Fuel pump was replaced in the last...

My 2006 GMC 1500 Sle

EV system wont clear

Weird Noise Under My Truck

I have a 2002 Yukon XL it was not making any noise all day as I was driving it was parked for about 2 hours I left went to the store still no noise I leave the store and turn on a road and my truck...

Audio Not Working In My 2014 Acadia Denali

All of my audio stopped working in my car at once. I have none on my radio, car signals or voice commands. Why would this happen?

Motor Loss Power And Skipping

Was washing my motor with truck running had my spray turned to jet stuck the stream to my alternator trying to wash the oil off it truck shuts off runs like crap now real sluggish loss of power too...