GMC Sierra 1500 Questions Maintenance & Repair

Rough Idle

Hi I have a 2006 GMC Sierra 5.3 170k and recently about the past 1000 miles my idle has been getting worse but today I noticed when I put the ac on it seems to smooth out again any thoughts?

Starting Problems

I have 2001 gmc sierra 1500 5.3 4wD don't crank don't star, please help me!!!!!

Truck

I have a 1990 gmc 1500 4x4 5.7 it runs hot with a thermostat in not sure why

Transmission Won't Shift Out Of 2 And My Speedometer Is Working

It will shift out of 2 only if I rev the engine but will not go into 3rd any suggestions on what it could be

1999 GMC SIERRA 1500

I recently switched motors in my truck, I pulled the motor from my 1999 gmc sierra 1500 and dropped it into a 1998 gmc sierra 1500. The motor turns over but it wont ilde, what would cause this to happ...

1998 GMC 1500 SLT

My 1998 GMC 1500 SLT with a 350 engine in it. It was sitting for a while. When I first started driving it it was doing fine until after about 2 hours of drive time. My gauges are all inaccurate. I ...

Gmc. Rear Brake Lights Won't Work

I've been reading a few topics on here but not sure if mine falls in one? My 3rd brake light works (cab light), all signals and reverse / lights, however my brake lights do not? I've checked bulbs ...

Check Engine Light

disconnected the air filter to make room in aligning my headlights and reconnect it back right after and when i start the car the check engine light came on

2014 Gmc Sierra

GMC Sierra 2014 Z4: there is a very loud miss in my engine. The check engine light is on. What is it likely to be plz?

12.6 Volts To Ac Clutch But Won't Engage

New Stereo Install - Will Not Work In Drive Mode What Do I Do To Fix It?

I have installed an aftermarket Dual Stereo (1'st mistake). I looked up the wiring diagram (2002 GMC Sierra SLT AC Delco radio) And began the installation, speakers, power (no power antenna) Connecti...

Front Brakes

I just bled my front calipers, still seems as if when I come to a stop there is no fluid getting to my pads, therefore sometimes they work fine. What could be my problem?

A/C

I inherited this truck from my father. He bought it used and I have no idea what the condition was then. A little over 88K miles. This is a totally basic truck but he loved it so it stays with me. I...

Stop Lights Are Not Working On 1994 Gmc 1500 Sierra

How Much Would It Be For Me To Rebuild My 1997 GMC Sierra 1500 Engine And T...

On My GMC Sierra 1500 All The Electronic Door Locks Work With My Key Fob Ex...

My key fob works to unlock electronically all my door except for my driver side door, do you have an idea how to fix this?

Coolant Expansion Tank

I was trying to put a vacuum on the cooling system and it would not hold. Should the expansion tank be completely sealed? Mine is not.

Tranny Swap

I have a 97 GMC sierra 1500 and I blew out the high gears and only have 1st and 2nd ....i have a 4l80 4speed and can't find a replacement and a buddy has a turbo 350 he will give me....i sometime...

2002 Gmc Sierra Won't Start

I recently replaced my rear main seal on my truck (which was running just fine before the replacement), and now my 2002 gmc Sierra 1500 won't start. I've replaced the battery, tested the alternato...

1997 GMC Sierra Front Brakes

I'm putting new brakes on my 97 Sierra, and all was going well until I tried to get the caliper back on. Ive got the Piston back as far as I can but there's still about a 1/8 in left sticking out. ...