2004 Chevrolet Tahoe: sudden loss of power

7 of the 467 complaints about the 2004 Chevrolet Tahoe describe sudden loss of power.

owner complaints: 7
of this car's complaints: 1%
typical mileage: 91,000
recalls: 0

Is there a fix? 122 service bulletins cover this area of the car. See below

Sudden loss of power by model year

2026
10
2025
5
2024
7
2023
21
2022
12
2021
49
2020
5
2019
12
2018
1
2017
8
2016
10
2015
22
2014
2
2013
5
2012
2
2011
5
2010
3
2009
7
2008
11
2007
18
2006
1
2005
2
2004
7
2003
7
2002
5
2001
2
2000
3
1999
5
1998
2
1997
6
1996
4
1995
2
1994
2

What owners say

Filed Sep 24, 2014 · Electrical, Engine · 117,000 miles · PA

Vehicle registered "reduced engine power" while I was on the highway, I was able to get to the shoulder, online research showed numerous incidents involving the throttle body sensor and the wires crimping, there was something about the wiring harness being covered by gm but it does not appear on a recall list.

Filed Jan 12, 2014 · Acceleration, Brakes · 200,342 miles · MO

A few weeks ago I was traveling down hwy 60 in southwest missouri and the "reduced engine power" light came on. The vehicle immediately slowed to about 4-5 miles per hour and I was unable to accelerate. I crawled to the next exit where I barely made it up the incline and into a gas station. We checked the gas, oil, battery, etc. I turned off the vehicle and when I started it up again, it seemed fine. I continued home. The next day I took it to a mechanic who said that it all checked out perfectly and there was nothing wrong. This has happened 12-15 times in the last month and every time I take it to the mechanic, he tells me that the computer is not "throwing codes" and there is nothing wrong. This is not a figment of my imagination. This keeps happening. The most recent "episode" was last night. We took the boat down to the river to go gigging at night. When I went to pull the trailer up the boat ramp and park the vehicle, the "reduced engine power" light again came on and I could not pull up the hill. Every time I attempted it, the light came on and I actually went backwards towards the river!! My children were in the vehicle and I was scared we would be trapped it something further malfunctioned and we rolled back into the deep cold water!!! From what I have now researched gm is aware of this problem and I do not understand why a problem this potentially deadly has not been dealt with! I am not the first owner of this vehicle and have never had a problem like this. I am a single mother of three beautiful boys and I am scared to drive my car because of this. I cannot put them in a potentially deadly situation. So our only vehicle sits and waits in our driveway leaving me stranded a lot until gm can come up with a solution on their dime. This isn't fair that a problem is know and no one at gm will fix it. Please help fix this before someone dies!

Filed Aug 31, 2011 · Electrical, Transmission · 136,233 miles · CA

2004 chevrolet tahoe "reduced engine power". Occurs intermittently and only allows you to go about 25 MPH. Very unsafe if on a highway. Gm dealer replaced the faulty wire harness and plug that plugs into the throttle body. Also replaced throttle body itself.

Filed Jun 6, 2009 · Brakes, Steering · 77,000 miles · CA

2004 chevy tahoe power steering failure and simultaneous loss of power brakes! It could have been a disaster if I had been going fast or in heavy traffic!

Filed Jul 13, 2007 · Electrical · 91,000 miles · NM

Vehicle goes into reduced engine power and engine light goes on. Vhicle has been in the shop 4 times for he same problem.

Filed Aug 25, 2005 · Engine · 10,000 miles · MS

Dt: while driving on the interstate at 76 MPH the vehicle was stalled, and the engine cut off. The owner had to pull over and restart it. Vehicle started back up, and died twice after that within 40 miles. The owner stated that there was no check engine light. The owner called onstar and they didn't see a problem. The owner stated vehicle lost power steering and brakes when the engine cut off. The car was taken to the dealership, and they could not duplicate problem. The owner contacted chevrolet, and they stated that they will look into the problem, and advised the owner to call back today. The problem happened since last year. The owner was still driving, it but did not want the car anymore since it was not safe to drive.

Filed Aug 11, 2005 · Fuel system · 41,000 miles · SC

The gas gauge module was faulty, causing me to run out of gas at high speed and lose power to steering and brakes. Out of gas even though it read that I had a quarter of a tank. Luckily no accident or damage done. However it cost 650.00 to replace this module.