Three problems related to check engine light on have been reported for the 2011 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 GMC Yukon based on all problems reported for the 2011 Yukon.
Having an ongoing issue while driving. I've ben on the highway in the rain and snow going 65-70 mph as well as dry pavement. All of a sudden my dashboard will light up saying service traction control, brake system, abs , park assist off and check engine lights up and blinks . I will loose my brakes I then have to pump my brakes several times to get to even slow down or stop . It's also happened when I am driving down a residential street. When I pull over turn the truck off and goes back to normal for a short distance. Weather doesn't seem to be a factor or speed. Taken vehicle to dealership and they don't find anything wrong. Had them replace bearings as well as speed sensors and it is still happening. And I had a code come up for cylinder misfire and knock sensor. Then take it garage and nothing is wrong.
I was on the highway driving through boston in the fast lane, going about 70mph when all of a sudden the stability control light came on with the check engine light and the engine reduced power light and my vehicle totally lost power to the gas pedal. I was able to get into the slow lane but my vehicle was not able to go faster than 35mph and there was hardly power to my gas pedal. Luckily, I made it to an off ramp, as I started to come to a stop, the engine was running very rough and it felt like it was shaking the vehicle back and forth. I barely made it into a empty parking lot and shut the engine off. I managed to make it to my mechanic, who got a throttle sensor code from the engine. He told me about a special coverage adjustment #12273b from GMC, regarding this exact issue and told me to take it to GMC. GMC told me, my vehicle isn't listed for this adjustment, even though, it says it should cover 2008-20111 GMC Yukons. Apparently, GMC said my VIN isn't listed as having the faulty part. I almost died this morning in the fast lane in boston with the exact problem GMC describes in the 12273b. GMC said I'm not covered and have to pay out of pocket. Obsurd.
The vehicle suddenly lost power and the stabili-trac system warning appeared in the dic, then the traction control system warning appeared in the dic, then engine power reduced by 16% in the dic. Drove vehicle to exit ramp and turned engine off. Vehicle restarted with only the check engine light on and no warnings in the dic. The engine did not however run smoothly. I took it to a dealer who clear some codes and replaced the tps. Checked all fuses. No further problem. However a friend has the same vehicle in a 2010 model. Same problem dealer replaced a throttle body. . Read more...