When driving whether highway or city streets, the car will without notice slow down to about 15mph. a code of "reduced engine power" is displayed on the dash. the car will not go any faster than 15mph, even with you foot on the gas petal. i have had the car in the shop more times than i can count. they keep replacing different parts thinking that it would fix the problem. almost within a week after being in the shop the same thing happens again without notice. i have noticed that other people are having the same problem. i treasure my kids and i do not want this to happen whenever i am on the freeway going 60 or 70 mph and a semi truck runs into the back of me whenever this happens without any notice. apparently gmc does not know how to fix this problem. there needs to be a recall on this particular gmc model. is it gong to take the loss of someone's life before the nhtsa takes a stand on this isssue. i have spent over $2000.00 in repair bills and have the same issue just this past week. i believe that gmc should isssue a recall on this problem and they repair at the their cost.
2004 gmc yukon xl: while driving at normal speeds this vehicle will have a warning light come on that says "reduced engine speed" then it shuts down to 30 mph instantly. there is no time for reaction. this problem occurs intermittently. it has happened over 50 times! a few of the times almost resulted in fatal consequences in high traffic. took the vehicle to the dealer. they said it was the throttle body. replaced throttle body and the next day had the same issue. took it back to the dealer, they said it was now the accelerator pedal assembly. replaced the assembly and two days later had the same problem.contacted gmc by phone and was basically told that there was nothing they could do because my vehicle wasn't on the safety recall list. i really need some advice or help before it costs my wife and four children their lives! *tr
My speedometer starting going from 0 to 100. then it was stuck on 40 for a while and now it has been stuck all the way over to the right for over two weeks. there are about 95,000 miles on it so it is not covered under warranty. *tr