GMC Questions Maintenance & Repair
Heater
Heater not blowing out hot air. Thermostat was replaced, worked 1 day then quit.No leaks! all hoses going to heater coil Hot.
Driver Door Ajar
I have a 2003 GMC truck, getting message , Driver door ajar and something is running down my batteries
GMC Sierra
My truck just died one day while driving it would turn over but not crank. Finally found bad cap and rotor button. It cranks now but misses pretty badly. What could cause this
Oil Pressure Gauge Reads 80 When Engine Is Running All The Time But Goes Ba...
Oil pressure gauge 06 denali 6.0 reads 80 all the time when engine running , with it off reads 0 gauge or sending unit or dirty screen ?
How Do I Reset Oil Life Percentage On 2002 GMC Envoy, 4.2L
I can not reset oil life on GMC Envoy, 4.2L after oil change. Help!
Truck Wont Start
When I turn on the key I have power, but when I try to start the engine I loose all power including all lights.
Fuel Gauge
My trucks gas gauge won’t work when it’s rainy but works fine when dry
Have A 2004 GMC Sierra 1500 V-8, Stopped At Red Light, Next Thing I Know Ga...
acted like someone had hit the gas & was pushing me through the intersection. had to throw it into neutral to stop. motor roaring, had to hit gas to get it to stop that, shocked me badly. what cause...
1991 GMC Sierra K1500 Backup Lights Not Working
I have no backup lights. I have parking and break lights but no backup. I replaced the lights and circuit boards but they still don't work. Where do I start to find out why they aren't working?
Electrical Stupidity, Please Give Feedback....
I have an 01 gmc with the 5.3, I just did a motor swap (old had a bad oil consumtion issue). Anyway upon completion it would crank but not start, I followed the youtube advice and moved the grounds ...
2012 Acadia
Why is my antifreeze leaking out overnight.i found a puddle of antifreeze behind my passenger front tire.does anyone know what could be the problem?
Peck In Newly Rebuilt Motor 95 GMC Yukon
I have a newly rebuilt motor with less than 2000 miles on it that started pecking. It pecks for about 10 mins then goes away I have put new lifters in it but still pecks what could the peck be
2004 Gmc Yukon Yesterday I Stopped At A Light And It Suddenly Just Turned O...
2004 Gmc yukon yesterday I stopped at a light and it suddenly just turned off it took a few minutes before it started again and now my oil pressure gage is very low and when I stop it drops to 0. th...
2006 GMC Envoy Denali AC
Car AC system will only go to extremely cold or hot no intermediate temperature and blower is still blowing out at full speed
Problem With It Blowing Fuses
Everytime I turn on the parking lights , it blows a fuse. What could be causing this ?
How Much Would It Be To Rebuild Or Replace My 5.3l V8 Engine On My 2005 GMC...
My truck has 306,xxx but I believe it can last a little bit longer. I have another vehicle but I would like my truck to go riding around in the mountains. I am just wondering if it would better to ...
Will Coverage III Of The Extended Warranty Cover The Brake Light Issue?
I purchased the extended warranty from the dealership for my 2016 Yukon slt. In the pamphlet is said it would cover electrical issues. Being that the brake light is an actual circuit board and n...
The Instrument Panel With All Of The Gages Have Died And The Code Port Has ...
what do I do with this truck? Instrument panel went crazy, gages dropped and came back up. And stuck at the following: RPMs 1500, Speed-sitting still- is 57 mph.,temp is in normal range, code port i...
Transmission
Rebuilt 2000 GMC SIERRA 1500, now it wont move when put in gear
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