2003 GMC Yukon Denali: problems, recalls and reliability

“Brakes failed while driving on city street with no warning could not stop at red light. Immediately pulled over and noticed brake fluid leaking from left side of vehicle from a broken brake line.”Owner report · Service Brakes · Jun 2016

“My daughter was driving and when slowing down the brakes failed to work. The vehicle was not able to stop and collided with the vehicle in front. Luckily nobody was injured in this collision. After inspection, I noticed fluid on the ground at the rear left (driver's side rear), and looked under the vehicle to see where the fluid may be coming from. I saw that there was fluid coating a large area of the underbody, and also see the brake line attached to the frame as wet and rusted. I have pictures saved as a reference. *tr”Owner report · Service Brakes · Oct 2014

“Driving along when all of a sudden I needed to brake for curve and the brake pedal went down to the floor. I ran off into a grassy field to prevent a serious injury. *tr”Owner report · Service Brakes · Feb 2014

“Tl* the contact owns a 2003 gmc yukon denali. The contact stated that the vehicle decelerated and stalled. The reduced engine power indicator illuminated. The vehicle was taken to the dealer six times to repair the throttle body, pedal switch, and wiring harness, but the failure recurred. The failure mileage was 220,000. Updated 10/02/14*lj updated 3/9/2015 *js”Owner report · Engine · Dec 2013

“Tl* the contact owns a 2003 gmc yukon denali. The contact stated that the traction control and the reduced engine power warning lights illuminated and caused the vehicle stalled. The contact was able to restart the engine, which resumed normally. The failure was recurring. The vehicle was taken to the dealer, who was unable to diagnose the failure. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure and current mileage was 213,000.”Owner report · Engine · Nov 2013

“I was driving approximately 65 mph uphill when my engine and traction light came on. My speed was immediately reduced to about 35 mph even though I tried to accelerate. I drove home about 8 miles at a reduced speed because I had my children in the truck and it was raining. I took the truck to a mechanic the next day and he replaced the throttle body. I picked up the truck that evening and as I was driving home the same thing happened again. I took the truck back to the mechanic, the check engine light and tc light was on again however he said that there was nothing wrong. His thought was to replace the throttle body again. Two replacements later, the problem remains. *tr”Owner report · Engine · Oct 2013

“Engine leaking oil rear crank seal and plate. Gmc said seal will not be enough, need to replace plate. Defective. My mechanic charged me $710.41. Gmc should be reimbursing me. *tr”Owner report · Engine · Aug 2013