2004 GMC Yukon: sudden loss of power

7 of the 159 complaints about the 2004 GMC Yukon describe sudden loss of power.

owner complaints: 7
of this car's complaints: 4%
typical mileage: 123,000
recalls: 0

Is there a fix? 126 service bulletins cover this area of the car. See below

Sudden loss of power by model year

2026
7
2025
6
2024
10
2023
31
2022
21
2021
37
2020
1
2019
6
2018
6
2017
7
2016
7
2015
13
2014
2
2013
1
2012
2
2011
2
2010
6
2009
1
2008
8
2007
17
2006
1
2005
2
2004
7
2003
15
2002
1
2000
3
1999
3
1998
1
1997
4

What owners say

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 Dec 23, 2023 · Acceleration, Electrical · OK

It is just like the the service bulletin out for the 2006 and later gmc sierra except it’s for a 2004 gmc Yukon slt 4x4 4.8L. It is going into reduced engine power mode and it has to do with the throttle actuator control module. Throws code P2108

Filed Dec 19, 2018 · Brakes, Transmission · 167,000 miles · MA

Trying to stop slowly and ABS system move my yukon to a point I almost hit the car in front of me. It happens when I try to stop under 10 miles per hour. Also 2wd drive drops to 4wd on highway and lose power. This is dangerous on the highway.

Filed Jan 28, 2015 · Driver assistance, Engine · 140,000 miles · IL

Reduced engine power.

Filed Oct 15, 2013 · Engine · AL

Since getting this car in 2005, my husband and I have experienced reduced engine power. Whether going 40mph on a 2 lane road or 70 on the interstate, this continues to happen. We have had this issue "fixed" twice, spent about $1000 on 2 separate "repairs," yet the problem persists. I cannot tell you how scary it is to be going with the flow of traffic and then have your engine power reduced. To be going 70 and then forced below 70 is dangerous. We could have been hit and killed trying to accelerate and pass someone. This actually happened. I know numerous gm owners have had this problem across numerous vehicles. Why haven't you forced them to fix it? Is it because the government bailed them out, and it would be detrimental to the economy? Safety and reliability on roadways should be important, too.

Filed Aug 23, 2011 · Engine · 50,000 miles · AL

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.

Filed Dec 5, 2010 · Driver assistance · 80,250 miles · IL

I recently had my vehicle in my service dept. For an on-going problem of which heritage gmc could not repair. From a standstill, when I would accelerate, the vehicle would lose power and not move after about 20 feet or so and a ?traction active? Message would appear on the display. This was a very serious safety concern as the vehicle would end up in the middle of the road with loss of power and cars behind me will almost re end my car. It is an intermittent happening 6 or more time daily, would happen when I would drive from a stop sign or red light. To regain power, you had to let off on the gas peddle and the drive would re-engage. We have been dealing with this for a while and all the gm vehicles run this type of sensor combo on all the wheels telling the computer when to apply brakes or power to the wheels, these get dirty from road salt in upper states and gm will only address 2002 cars, but the 2002-2005 look all alike, this also applies to regular cars, after doing a search there are alot of people having my same problem, this is as safety hazard and is going to cause a fatality.......