2007 GMC Yukon fuel system problems

Filed Apr 14, 2023 · Fuel system · TX

Travelling on an FM road, going 55 when Yukon began accelerating on its own, even when I took foot off the accelerator. tapped brakes, thinking cruise control had engaged. Vehicle swerved violently. Speed kept increasing. Saw I was traveling 75mph! Braked hard! Felt as if acceleration was fighting against the brakes. Then spun out in the middle of the highway, spinning around 1 1/2 times while fully braking. Finally I slowed enough to throw it into park, regardless of what it might do to my transmission, I had to stop the vehicle. I came to rest straddling the lane I had been in and the oncoming lane, facing the direction from which I came. Traffic behind me had seen my struggles in time to stop back far enough that they weren’t endangered and there was no oncoming traffic at that moment. The fuel propulsion system (throttle?) seems to be at fault. There was no warning on the dash about any issue prior to this. The issue was real, a danger to myself and others. A mechanic examined the vehicle and discovered accumulation of debris on top of connector under the hood. He believed just enough water caused the conductivity needed to trigger the acceleration. State that these vehicles allow more intrusion from wheel well area than most. He thoroughly cleaned all connectors and no further issues have happened (yet!) Further research uncovered a report on ‘Sudden Unintended Acceleration’. The link follows: https://www.gmfullsize.com/threads/sudden-unintended-acceleration-gm-full-size-trucks.327479/ I also have a report quoting all the GM document #'s if need be.

Filed Dec 26, 2020 · Engine, Fuel system · 185,000 miles · TX

Low oil pressure stop engine on dash with with oil and reset in motion on highway

Filed Oct 11, 2020 · Fuel system · 214,000 miles · TX

On 10/08/2020 I was driving in heavy traffic at 5 pm when the engine lost power and the dash started flashing first it was turning off the stability control system and the next message was going into reduced engine power mode. At that point, the vehicle dropped to about 30 MPH with full throttle and I had to maneuver thru traffic to get off the freeway. Not easy to do with a car that will only do 30 MPH or so. With caution lights blinking and waving at cars I nearly got rear-ended twice before I could get off the freeway.

Filed Apr 23, 2020 · Engine, Fuel system · 244,000 miles · MD

Tl* the contact owns a 2007 gmc yukon. The contact stated that the vehicle shuddered intermittently with the traction control and check engine warning lights illuminated. The contact stated that the vehicle hesitated while attempting to move off from a traffic light. The contact contacted jack winegardner chevrolet (11001 md-210, fort washington, md 20744, (301) 292-6500) and was informed that the fuel injector and fuel rail needed to be cleaned. The vehicle was repaired. The contact added fuel injector cleaner however, the failure persisted. The vehicle was taken back to the same dealer and the contact was informed that the fuel pump was defective. The check engine warning light remained illuminated. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 244,000.

Filed Nov 7, 2016 · Driver assistance, Engine · 144,956 miles · IL · crash

My stabitity trac control lot popped on, check engine light, tire pressure light and now my low oil pressure light popped on saying stop engine.

Filed Jul 21, 2015 · Engine, Fuel system · 175,500 miles · WI

This is another incident that occurred the same week as my last complaint. While driving home from lunch I slowed the vehicle as I was going down a hill, this did not require any use of the accelerator pedal. Upon slowing down my vehicle displayed the following messages: "service traction control", "service stabilitrack", "reduced engine power". The SUV would not accelerate over 15mph requiring my to pull to the side of the road. The vehicle shook violently until I was able to put it in park and turn off the engine. After 10 minutes of sitting on the side of the road I stared the engine again. The SUV started right up but the "check engine" light remained on until the following day. Engine codes lead to a faulty throttle body position sensor which was replaced after the incident on 7/13. I took my vehicle to the gmc dealer today who informed me of the same problem yet again. These are either bad parts or a some bigger gm issue.

Filed Jul 21, 2015 · Engine, Fuel system · 174,900 miles · WI

While driving to work on the interstate I approached slow moving traffic. Upon slowing down my vehicle displayed the following messages: "service traction control", "service stabilitrack", "reduced engine power". The SUV would not accelerate over 15mph requiring my to pull to the side of the road. The vehicle shook violently until I was able to put it in park and turn off the engine. After 10 minutes of sitting on the side of the road I stared the engine again. The SUV started right up but the "check engine" light remained on. This was a terrifying experience on a busy stretch of hwy 88 outside of chicago. I hope others do not have to go through this experience.

Filed Jan 21, 2015 · Driver assistance, Fuel system · 92,000 miles · MN

2007 gmc yukon denali. As I was driving...engine light came on, following with vehicle stability control, traction control disable then reduced engine power and it wont let me drive more then 20 MPH. Took it the dealer, replaced terminal wires, replaced bcm module ($1100). Two days later same lights comes back on dashboard...took it to the dealer and they told me I need throttle body replaced ($631). Then even more issues came, as you stopping for the stop light, but the truck jerking forward while foot on break and as stopping it makes a thud noise when slowing down. Contact gm said they'll be able to help me out but then they decline for any help and simply told me there is nothing they can do. Now dealer is telling me I need breaks, ball joints, up control arms, shocks. Truck has under less then 100k miles and most of these should last more then 100k. Even dealer admitted by saying I've never seen yukon denali going back. Its a safely issue. My wife will not drive this truck any more with 3 kids in it and now it just sits in my garage while making payments to this truck. Its ridiculous! Im sure there are someone out there that can help us and others who are going through the same issue before gm get a lawsuit and have blook on their hands.

Filed May 13, 2014 · Fuel system, Steering · 48,000 miles · CA

The incorrect fuel levels when it run low, it was showing that have 120 miles to go, when I just drove for 20 miles and it empty, it drop down so fast that I'm so nervous, almost on freeway no where near by for gas station, it happening seen I bought this truck back in 2009 and still now problem with it, I have to refill almost half of the tank every time, can't wait until it empty light it will out of gas so quick, and second problem is steering making noise every turn on a column of steering.

Filed Sep 5, 2012 · Acceleration, Driver assistance · 52,000 miles · NM

Was driving down the freeway and the vehicle warning bell rung. On the vehicle heads up display read. Traction control, stability control and reduced engine power. The vehicle immediatly started shutting down with no power. This caused a near miss from behind from a tractor trailer vehicle.