I'm driving and all of the sudden the stability and traction controls lights start flashing, the check engine light comes on and it goes into 1st gear and won't shift out. It takes about 15 seconds to go from driving 60 miles and air down to 10. Gmc had it a total of 7 weeks in the winter of 2015/2016 and couldn't find the problem. Doing it again now7/7/2016. Took it to another dealer. They think it's a wiring problem but can't find it either. Told me would just have to drive it till it gets worse. I noticed this last time it messed up that it had been shifting very hard that day. Very frustrating to pay that much for a vehicle you don't feel safe driving. Ready to trade but not sure I have much faith in gm vehicles after all the problems I've been reading about.
2008 GMC Yukon engine complaints
Page 2 of 2: complaints 11 to 15 of 15, newest first, as owners wrote them.
Tl* the contact owns a 2008 gmc yukon. While driving at approximately 25 MPH and approaching a stop sign, the brake pedal was depressed but the vehicle did not stop. The accelerator pedal was depressed, but the vehicle did not accelerate. Another vehicle crashed into the front passenger of the contact's vehicle. The air bags did not deploy. The contact suffered a concussion and the pregnant front passenger sustained back injuries and received medical attention. A police report was filed. The vehicle was towed to an independent mechanic where it was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 100,000.
While traveling on the interstate at speed (70) the stabilitrac light came on and reduced engine power message displayed. The RPM's went over 4k, then the yukon slowed in traffic and I had to pull to the side before being run over. The accelerator was unresponsive at that time. I turned off the engine, waited about 5 minutes and then resumed driving using '3' to engage transmission instead of 'd' the check engine light remained on, but I made it to my destination 2 hours away.
Tl* the contact owns a 2008 gmc yukon. The contact stated while driving 35 MPH the vehicle stalled. When the contact looked underneath the hood, the contact observed that the vehicle was on fire. The police and fire department extinguished the fire. The origin of the fire was unknown. A police/fire report was filed. There were no injuries. The insurance company was notified and stated the vehicle was destroyed. The dealer nor manufacturer were notified of the failure. The failure mileage was 64,000.
This is in regards to gmc bulletin #pip4112j : sag or hesitation on acceleration (normal operation characteristics) - (jul 21, 2011). I've been having this problem since day one and took the SUV to many dealers but dealers could not verify the concern until now. The 2008 gmc yukon xl denali would stop accelerating for 2-3 seconds when the gas pedal is pressed. Most of the time it is when I am trying to pass a lane, trying to enter highway, trying to climb a mild hill or trying to avoid a potential accident. After the delay, the transmission would down shift and I think it down shifts to either 1st or 2nd gear causing the SUV to roar like crazy and shoots out like a cannon. I had an incident where the cops gave me a warning with the lights and siren probably thinking that I was driving recklessly. There were also incidents where I've had the gas pedal pressed down about 80%-90% trying to climb a mild elevation and either the engine and or transmission started to choke. It was so bad that the denali almost came to a full stop. You really have to experience this on your own to understand how scary and nerve wrecking it is when you have vehicles about to ram you from behind because the SUV simply would not accelerate. Many times, I had to swerve back in to original lane in fear of causing a serious accident. Because of this, I don't even let my wife drive the vehicle. Service manager was kind enough to research on this matter and found bulletin #pip4112j and he can't really do anything. I've been explained that due to large power from the engine, he has seen the rear of the vehicles break apart. I fully understand the service manger's position on this but I think this is a major safety concern and someone can seriously get hurt by this.
VIN decoder
See the problems and recalls for an exact car
Buying a used 2008 GMC Yukon?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history