2007 GMC Yukon Denali engine problems

Filed Feb 15, 2016 · Engine · VA

When driving down the road the engine light in my denali comes on and engine power is reduced to a slow speed where I have to pull over and shut the vehicle off. After doing so for 5 minutes or more, I cut my vehicle back on and it will drive normally with engine light still on. It has done this numerous times, sometimes 5+ times in one day. I have tried taking it and getting it fixed but no gm dealer can figure out the issue. This is unsafe especially when I am driving much less with my family in the car with me. Please help me get this issue fixed gm doesn't seem to want to fix their issue.

Filed Mar 17, 2015 · Driver assistance, Engine · 140,000 miles · TN

As I was driving 'oil pressure is low, cut the engine off' warning came on and the oil light was on. That also triggered the traction control/stabilitrak light to come on. From then on whenever I drive the vehicle those lights come on as well as the check engine light. This is apparently a common problem with the gmc 2007 engine. There are multiple forms from chevy, cadillac, and gmc where consumers that have these engines are experiencing this problem. When we take it to dealerships we are told to change the engine. I was just quoted over $8000 to change this engine. I can't even sell this truck without losing my shirt. We need help out here. Gm knows that this is a problem because the dealerships know. They are sweeping this under the rug until some people die because of it!

Filed Sep 8, 2014 · Driver assistance, Electrical · 80,000 miles · WA

This has now happened several times since, at no particular speed. I will be driving and all of a sudden the stabilitrak lights and traction control lights come on, and the engine begins to run very hard and will not accelerate very quickly and cannot reach full capacity. This is somewhat scary as it has happened on the highway several times, as well as just driving around my residential area, always with my kids in the car. Usually once I turn the car off and leave it for a little bit, then restart it, the lights are off except the engine light will stay on. It seems to me that many people are having the same issue with this model and that gmc should be taking this safety concern very seriously as not being able to accelerate on the freeway is definitely a huge safety issue.

Filed Jul 31, 2014 · Engine · 120,000 miles · VA

Tl* the contact owns a 2007 gmc yukon denali. The contact stated that the motor mount was fractured. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 120,000. The VIN was not available.

Filed Apr 24, 2014 · Engine · 78,000 miles · TX

Front left exhaust manifold bolt head broke off. When the engine is cold upon startup exhaust gases escape near a water temperature sensor. Which could make the engine light come on and not pass inspection or cause a fire.

Filed Mar 13, 2014 · Electrical, Engine · 117,000 miles · FL

I have just read a few other complaints about an issue I am having now, and have had 3 times in the past. While under normal driving conditions, I have had my SUV become very sluggish and difficult to drive. Lights come on say loss of power, stabilitrac problem etc. The first time this happened, I was visiting orlando florida. I took the SUV to a dealer, and they said there was an issue with the ECM and reprogrammed it. I left back the next day for atlanta. Nearly 80 miles away in ocala florida, it started doing this again. I called a tow truck, and had it taken to an ocala dealership. They in turn told me it was a bad ECM, and after spending an entire day in ocala, I was back on my way to atlanta. Several months later, I had this occur again. Once again I had it taken to a dealership in atlanta. They ran a computer diagnosis on it, and said they had no idea why it was diagnosed as an ECM problem, as the code coming up was due to a problem with the sensor in the floor board that reads the distanceof the gas pedal from the floor board. As it is a drive by sensor vs drive by wire. They repaired this, and although I felt it should have been covered under warranty, even though I was out of warranty at the time, the first two incidents that were supposedly diagnosed wrong were done so while under warranty. They ended up cutting the costs in half. I had no choice, as I needed my vehicle back. Now it has occurred the forth time. I have resorted to the internet to see if other are having the same problem. What I'm finding through this research, it sounds as if many have had the same issue, and it seems to be an issue with the throttle body. While researching, I was alerted to this site, thus the reason I'm posting here. Maybe something can be done about this issue, as it seems this happens quite often, and gmc is keeping it under wraps.

Filed Mar 11, 2014 · Body, Engine · VA · 1 injury

Chrome has been peeling off driver side door handle. Cuts my skin. One day I was driving on a 4 lane highway going approx 55 MPH. I ended up hydro planning my denali makes a 180 and I'm facing oncoming traffic. I hit the gas to get to the emergency lane but my engine turned off. Is this normal?

Filed Jan 28, 2014 · Acceleration, Driver assistance · 102,000 miles · MI

I was traveling on the freeway at about 70 MPH coming from a supervision training class along with a co-worker and the following sensor lights started appearing on my dashboard: traction control off, stabilitrak off. This has continued to happen on a regular basis. I have taken it to the gm service at least twice and private repair facilities numerous times and the situation continues. It is now 01-28-2014 and the situation continues and is getting worse. Alone with the above issues now the "reduce engine power" light comes on and the engine shuts down. It has become very dangerous to drive this vehicle and no repair facility, gm or otherwise, knows how to fix the problem. I have to drive so this vehicle is what I drive but, it is dangerous and gm needs to fix it or recall for this issue. I need answers quickly I fear this issue is dangerous for all concerned especially when this happens on a freeway!!

Filed Jul 26, 2013 · Acceleration, Driver assistance · 72,105 miles · MA

On july 26, 2013 I was in my 2007 gmc yukon denali when I had an issue. I was in my car, the engine was running but it was in park. I was idling for about 5 minutes when I received a "engine power reduced", followed by the check engine light. I immediately shut the car off and gave it about 20 minutes before I turned the car back on again. The check engine light was still on with the "engine power reduced", followed by "service stabilitrac", "stabilitrac off", service traction control", "traction control off", and "power assist off". I immediately called the local gmc dealership and they told me to try to bring the car into the dealership to see what they could do. After I brought my car to the service department I was told that the sensor behind the gas pedal needed to be replaced. They replaced the part for roughly about $300 and the check engine light went away with all of the messages. Since the repair I drove the car for about 60 miles and the check engine light did not come on again, and the car seems to be fixed. Please look into this matter since there are quite a few of us with this same issue.

Filed Apr 26, 2013 · Engine · 106,273 miles · CO

I was driving my vehicle. The traction control light came on, and the check engine light came on right after. The truck then began to idle strange like it was going to stall. I drove it home while talking to my husband he stated since I just filled up the tank maybe it was bad gas. I drove it home which was about 5 miles down the road. As soon as I pulled into the driveway , the service brake system came up on the dash and the my truck started making this horrible clicking. I later found out the motor is gone and threw a rod. I think its pretty odd that all these people are having issues with the traction control light coming on then the engine acts up. This is a problem gmc needs to fix, they don't feel its their problem to deal with.