GMC Questions Maintenance & Repair

Engine Swap For 1999 Jimmy SLS

I have a 1999 gmc jimmy 4.3 l v6 vortech engine and the engine now knocks & I want to replace the engine. I found a 2004 Jimmy engine & I am wondering if it will slide in with no problems. Will thi...

2011gmc Sierra Shifting Problems

code2771??

2011gmc Sierra Shifting Problems

2011gmc sierra shifting problems shifts into 3rd high revs & at 55 mph is at 3500 rpms not shifting to 4th gear

2018 GMC Terrain Dies At Stoplights And Gear Flips Over Into Neutral

Our 2018 GMC Terrain (low mileage) has developed an issue with stalling at stoplights with the transmission then flipping over into neutral. The car restarts but it's frightening when you have a lon...

1986 Gmc K1500 Headlights Dont Work

my headlights dont work. everything else does

2013 GMC Sierra "Service 4 Wheel Drive"

I have a 2013 GMC Sierra 1500 SLE with the 4.8L and the truck is in great condition. Every now and then, more so in cooler weather (like 40°F and below), the dash read out will state "Service 4 Whe...

2013 GMC Sierra "Service 4 Wheel Drive"

I have a 2013 GMC Sierra 1500 SLE with the 4.8L and the truck is in great condition. Every now and then, more so in cooler weather (like 40°F and below), the dash read out will state "Service 4 Whe...

A/c Shuts Off What Cousing This

Ac works fine until I push button for rear cabin then ac system shuts off any idea why this happens

2020 Terrain SLE Turns Over, However, Will Not Start.

Engine Will Turn Over And Will Not Start.

Stability System Disable

Why is my brake light on and the stsbility system disabled.

2016 GMC Sierra Electrical Issues

2016 gmc sierra occasionally won't start and all dash displays are blank after a few minutes truck will start but all systems are out of calibration [clock radio compass temperature electric trailer...

Where Is The Cabin Filter In A 2013 GMC Yukon XL

The manual doesn't even list a cabin filter...but it must have one, right?

No Air Coming Out AC Vents

I have a 1999 GMC Jimmy I replaced the blower motor and resistor and it's still not working any ideas? it is under the hood. Could it be the resistor connector

My Door Will Not Unlock Or Open Driver Side

my door will not unlock or open driver side, i tried the key from outside and also the key fob and from the inside door handle ,when trying to manually unlock from inside the linkage it will not mov...

2007 GMC Yukon XL 2500 Radio Whine

I just purchased a 2007 Yukon XL 2500 with a Factory DVD. It has a whine in the speakers all throughout the car. It happens if the radio is on or if the blinkers are on. I know the blinkers run thro...

Highbeam Kills My Engine

I have a 2005 GMC envoy that recently started dying on me when I flash my high beams. I also noticed that driver side is dimmer that the passenger side. All fuses and relays are good, could this be...

2003 Gmc Sierra 2500 Transmission Issues

I have an 03 gmc sierra 2500 6.0 4wd, Ive had this issue with two transmissions now, speedometer and rpm gauges show 0, the truck is shifting hard, ive tested 3 sensors that i have ( the truck is o...

2003 Gmc Sierra 2500 Transmission Issues

I have a 2003 gmc sierra 2500 6.0 4l80e 4wd. Ive had issues with two transmissions with it shifting hard, no speedometer or rpm gauges, and no start by key. Replaced neutral safety switch, checked ...

2003 Sierra 2500 Transmission Issues

I have a 2003 gmc sierra 2500 6.0 4l80e 4wd, tach and speedometer don’t work, the truck itself, when viewing live data, doesnt register how fast its going. All speed sensors ohm out to 1.39-1.42 oh...