2004 GMC Yukon: check engine light

Filed Mar 5, 2025 · Electrical, Engine · 123,000 miles · AZ

The contact owns a 2004 GMC Yukon. The contact stated while driving 45 MPH, the vehicle started losing motive power. The check engine warning light and another unknown warning light were illuminated, and a message was displayed that the gas port was reducing power. On a separate occasion, the vehicle started to lose motive power and then the vehicle started to shake. The vehicle was losing power and shaking until the vehicle was turned off. The vehicle was restarted and drove normally for six months without failure. The vehicle was taken to an independent mechanic where it was diagnosed with throttle body failure; however, the failure persisted. The vehicle was repaired but the failure persisted three more times with different diagnoses. The vehicle was taken to other independent mechanics however, the cause for the failure was not yet determined. The vehicle was not repaired for the most recent failure. The dealer was not made aware of the failure. The manufacturer was made aware of the failure. The failure mileage was approximately 123,000.

Filed Oct 11, 2015 · Driver assistance, Electrical · 175,000 miles · NC

Surge happens while driving, then engine light comes on, decreased engine power occurs, tracktion stability indictors comes on. Car looses power. I have to pull over off the road, put into park,cut ignittion off, wait a few minutes and then restart the car. This could happen several times while driving.the vehicle is in motion and this is a driving hazard and big safety issue, it has happened on city street and on a highway. It happens daily.

Filed Sep 5, 2014 · Acceleration, Driver assistance · 60,000 miles · NV

Days after purchasing the vehicle, the check engine light came on, the vehicle powered down taking the speed from 35mph or above to 5-10 miles MPH with out warning. This continuously happened as years passed and gm certified repair shop never found what's wrong. Until about two years ago, I googled issue and found its related to accelerator pedal and wiring from pedal that leads to engine throttle control, I changed throttle control plug to new and replaced accelerator pedal with used part and worked fine for two years but has now started failing again. I am afraid of this issue because I could be on freeway going 65 MPH and if these fail as they have and are, I then slow down to 5-10 MPH in a matter of seconds and could cause a serious accident. Please help, there should be a recall for this.

Filed Jan 20, 2011 · Electrical · 90,000 miles · CA

Tl*the contact owns a 2004 gmc yukon. While parked, the contact started the ignition and the check engine light illuminated. The check engine light would illuminate intermittently. The contact stated the speedometer was also failing. The speedometer would become stuck and after a few days would function normally. The vehicle was taken to the dealer where the technicians informed the warranty had expired and the contact would have to cover cost of the repairs and diagnostic. The vehicle was not diagnosed or repaired. The approximate failure mileage was 90,000.

Filed Sep 1, 2004 · Brakes · AK

While driving vehicle suddenly lost acceleration. Check engine light appeared on the dashboard and remained on. Consumer was able to pull over by coasting the vehicle to the shoulder. Then vehicle stalled. Consumer tried to restart vehicle but was unable to do so. Then, noticed that the rear passenger wheel smoke was coming from it. Consumer had the vehicle towed to the dealer for inspection, and mechanic determined that the emergency parking brake needed to be replaced.