Last post on Jun 17, 2013 at 10:17 AM
You are in the GMC Yukon
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GMC Yukon Denali, GMC Yukon XL, Car Safety, Electrical, Engine, SUV
#188 of 559 Re: 2004 suburban 1500 reduced power engine [barnesbw3]
Aug 23, 2011 (7:36 am)
We have a 2004 GMC YUKON. Since we've had it, Reduced Engine Power has become a constant and dangerous problem. Most recently, yesterday, my husband was trying to accelerate to pass a slower vehicle with huge tires on the back only to have this happen. If someone had been behind us, we would have been hit, seriously injured, maybe even dead with some of the circumstances we have had on the interstate. Today is August 23, 2011. We had this vehicle fixed on July 28, 2011, paying almost $600 for it to be taken care of. It says on the ticket that we told them about it and were under the impression this would take care of it. They replaced the accelerator pedal assembly, which I believe included the app sensor, and cleaned the throttle body of excessive carbon build up. After spending $500-600, I want to know why we are still having this problem along with so many others I have seen complain about it online? GMC has a KNOWN PROBLEM that needs to be resolved.
This is the complaint I filed with NHTSA. I got in touch with an attorney today, and I filed a complaint with GMC yesterday. Please do the same, get a case number, and make them recall and replace these faulty vehicles. I write this as I sit in my local GMC dealer's waiting room. I am so sick of this happening. It is scary and completely unsafe.
#189 of 559 Re: update on the reduced engone power thing.. BEWARE!!!! 
Aug 23, 2011 (2:50 pm)
well I have the same problem, I complain to HTSA and to GMC I fine out in the internet that can be the Harness that's go to the throttle body I even change the engine in my suburban 2004 the catalytic converter and the throttle body, and the gas pedal module, and still the same problem, the GMC is telling me to bring it to the near dealership for diagnostic, but I'm not going to do that because they do not the problem and I will spend thousand dollars for nothing, please make complaints and get a lawyer
#190 of 559 Re: Same problem [mattroutzahn]
Aug 23, 2011 (3:03 pm)
I change the catalytic converter in my suburban for the same problem Reduced Power Engine and still the problem there
#191 of 559 Re: Same problem [paco51]
Aug 23, 2011 (10:33 pm)
Let's get a class action attny. What are we waiting for?
#192 of 559 2004 Yukon Denali Reduced Engine Power
Aug 24, 2011 (8:22 am)
I have a 2004 Yukon Denali w/ 45,xxx miles. I've experienced this problem a few times in the past, but it was always on start-up. However today I was driving to work in rush hour traffic and my vehicle died right after changing lanes in a 2 lane curve. I obviously lost power to the steering and all other accessories. Luckily I was able to make it safely through the turn as I shifted the column into neutral so that I could maintain the momentum through the turn. As I was rolling in neutral I started the vehicle back up only to receive no power as it was displaying 'reduced engine power'. As luck would have it, there was a decent break in traffic where I was able to immediately cut across the 3 lanes of traffic to the shoulder and limp to the next turn off. After turning off into a parking lot I shut the vehicle down for a minute. Then as if nothing ever happened my Denali started right up and allowed me to finish my commute to work. Definitely gave me the nauseous feeling from the adrenaline dump and pretty much ruined my day. Now I'm sitting at work concentrating all my focus on Google searches for possible fixes as I'm concerned about driving this to any of my meetings today, let alone home. As it sounds no one has had any luck with figuring out what exactly causes this, i would be interested in joining this class action suit. I couldn't imagine the feelings this issue has caused to those on this post who had family or friends in the vehicle when this happened, or those who were involved in a accident due to this.
#193 of 559 Re: 2009 Impala gas pedal modulle [gmcustsvc]
Aug 24, 2011 (8:50 am)
Your customer service is the worst I have ever experienced.. People don't speak english. And talking to me from the Philipense?? What do they know about an Suposed American made vehicle.. Out source our jobs to people who don't even speak english.. I am on board for a class action lawsuite. Was told by these reps that know one at gmc what so ever can tell me why the light comes on. BS.. got to start a blog on why not to buy GMC and make my case clear.
#194 of 559 Reduce Enging Power
Aug 24, 2011 (9:01 am)
Without question GM has the worst even beyond Directv customer service. They have no clue and according to thier customer service reps out of the Philipeans they could care less if my son gets killed because of this. They tell my there is no one at gm that can even tell me why the light comes on.. Yet they want you to take it to a dealer so they can soak you.. Got to stand up. Make a large impact by voice. I have not even put 12,000 miles on this vihicle ( used) well under 100,000. and they will do nothing..
#196 of 559 Re: 2007 Tahoe, reduced engine power [jtm204m]
Aug 24, 2011 (9:49 am)
yes I'm in!
#197 of 559 Re: 2007 Tahoe, reduced engine power [gmcustsvc]
Aug 24, 2011 (9:51 am)
Give me a break they have no idea what it is either!