2003 GMC Yukon: sudden loss of power

Filed Dec 10, 2019 · Engine · 118,000 miles · MN

Car looses power and goes into reduced engine power. Unable to drive over 2mph. Happens at random times, in all modes of travel, uphill, downhill, from a stop and acceleration. The worst was when it happened going 55mph on a highway. Two separate mechanics have been unable to pinpoint the problem even after $1,300 worth of work and new parts. It's been happening since mid october 2019

Filed Aug 28, 2017 · Electrical, Engine · 100,000 miles · MA

Tl* the contact owns a 2003 gmc yukon. While driving approximately 50 MPH, the vehicle experienced independent deceleration and the reduced engine power warning indicator illuminated. The vehicle was previously taken to an independent mechanic who diagnosed that the fuel pump, spark plugs, transmission, and alternator needed to be replaced. The vehicle was repaired, but the failure recurred. The manufacturer was notified and transferred the contact to the federal safety agency. The failure mileage was approximately 100,000.

Filed Apr 17, 2015 · Electrical, Lights · 125,000 miles · WV

Losing power throughout my vehicle. Started with the overhead heating/cooling controls. Vehicle will lock itself without any keys when doors are shut. (it has locked me out on numerous occasions) worked its way back towards the rear losing overhead lights. Heater/AC does not work in the rear. Passenger side rear door window or seat belt does not work. Four wheel drive goes crazy. And now the main (front) heating and cooling controls are going ape [xxx] crazy. Information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).

Filed Jul 14, 2014 · Driver assistance, Engine · 100,000 miles · NC

Tl* the contact owns a 2003 gmc yukon. While driving various speeds, the reduced engine power and stability system disabled indicators illumianted on the instrument panel. The vehicle suddenly experienced a loss in acceleration. The failure recurred for a span of three years. The dealer was unable to duplicate the failure. The manufacturer was not notified. The approximate failure mileage was 100,000.

Filed Dec 29, 2013 · Engine · 150,000 miles · NY · crash

Reduced engine power. Truck goes into traction control while driving or turning stability control is off. Check engine lite goes on and off while driving mass flow sensor keeps coming on.

Filed Oct 28, 2013 · Acceleration, Driver assistance · 143,256 miles · PA

Wife driving truck to work " reduced engine power", message came on the dash, and also said traction control was disabled. Power was reduced gradually to ten miles per hour. She floored the gas, nothing. Turned it off, restarted it, nothing. Engine light and traction disabled lighted were illuminated. Also the rear mirror temperature display flickers all the time. Drl burn out almost daily. Gmcs have major electrical issues before people start dying. Imagine a car shutting down on you while on the highway. That an accident waiting to happen. The rear wiper works when it feels like working, there is also a message about fixing the ride control. For all the bail money gmc got, they should recall these mistakes they made.

Filed Oct 20, 2013 · Acceleration, Brakes · LA

I have heard of several accidents because of reduced engine power. It slows the vehicle down and people behind them rearended them because it is a sudden drop in speed and there is no time to slam on the brakes please get this fixed before a child is injured or killed thank you.

Filed Aug 20, 2011 · Engine · 98,000 miles · IL

We came home from vacation to find our 2003 yukon's battery dead. My husband jumped it and took it for a ride. It wouldn't run over 20 MPH. The "reduced engine power" light is on. He shut it off and it's running ok right now. I check out a couple of forums on this problem. I'm afraid to drive it because endless numbers of consumers report the same problem coming back even when they have had it serviced by the dealer. This problem seems to come without any notice to the driver and has almost cause accidents. Several people have claim to be on the highway going the speed limit when their car suddenly drops to 20-30 MPH. Gmc does not seem to be overly concerned with this problem and has no recalls on it.

Filed Dec 10, 2009 · Engine · 60,000 miles · CA

Tl* the contact owns a 2003 gmc yukon. While driving approximately 50 MPH the vehicle began to lose power. He pulled to the side of the road and restarted the engine to resume normal operation. The vehicle was taken to an authorized dealer for inspection. The technician was unable to duplicate the failure. No repairs were made. The failure mileage was 60,000. The current mileage was 85,000.

Filed Aug 1, 2005 · Steering, Tires · 45,868 miles · MI

I took delivery of my 2003 gmc yukon slt on 22 december 2003. It has chassis problems since it had 500 miles on the odometer. I have taken it to the dealership service department for the following chassis related complaints multiple times: front end vibration and highway speeds (50+ MPH), steering wheel pull at all speeds, and sudden loss of power steering. In the past, gm service has aligned the front end, balanced wheels, replaced tires, replaced the power steering pump, and replaced the steering gear. Vehicle service history is available. The most recent loss of power steering occurred on 29 july 2005 at approximately 10:00 p.m. I was pulling out of a tubby's restaurant parking lot in clinton township, mi in an attempt to turn right onto garfield st. My attempted right turn failed as my vehicle steering locked mid way into my turn, causing my vehicle to go into oncoming traffic. I slammed on the brakes, put the vehicle in reverse to remove my vehicle from traffic, and wrestled with the steering wheel to turn right to get on the right side of the road. I had a near miss as there was traffic coming from both directions on a road with a posted speed limit of 45 MPH. After the near miss, I realized that the vehicle had lost power steering, only to the right. I carefully drove the vehicle home. I took the vehicle to rinke pontiac gmc service on 1 august 2005 for service. The serve department said that I would have the pay for it since the warranty has expired.

Filed Aug 1, 2005 · Steering, Tires · 45,868 miles · MI

I took delivery of my 2003 gmc yukon slt on 22 december 2003. It has chassis problems since it had 500 miles on the odometer. I have taken it to the dealership service department for the following chassis related complaints multiple times: front end vibration and highway speeds (50+ MPH), steering wheel pull at all speeds, and sudden loss of power steering. In the past, gm service has aligned the front end, balanced wheels, replaced tires, replaced the power steering pump, and replaced the steering gear. Vehicle service history is available. The most recent loss of power steering occurred on 29 july 2005 at approximately 10:00 p.m. I was pulling out of a tubby's restaurant parking lot in clinton township, mi in an attempt to turn right onto garfield st. My attempted right turn failed as my vehicle steering locked mid way into my turn, causing my vehicle to go into oncoming traffic. I slammed on the brakes, put the vehicle in reverse to remove my vehicle from traffic, and wrestled with the steering wheel to turn right to get on the right side of the road. I had a near miss as there was traffic coming from both directions on a road with a posted speed limit of 45 MPH. After the near miss, I realized that the vehicle had lost power steering, only to the right. I carefully drove the vehicle home. I took the vehicle to rinke pontiac gmc service on 1 august 2005 for service. The serve department said that I would have the pay for it since the warranty has expired.

Filed Oct 17, 2004 · Fuel system · 18,000 miles · LA

Driving 60 MPH on a 20 mile bridge, the engine failed (engine light and traction control light were on. No power steering or power brakes. Nothing appeared to be overheated. 2 hrs later it started, 5 minutes later it killed again. Towed to nearest dealership. They road tested it and car failed again. Found 1 broken wire inside wire insulation. Repaired. Picked up car and it failed 1 mile later, took it back to dealership on "reduced engine power". They found 2 more broken wires. Replaced harness. One week later it happened again. After brief wait it started and ran for another day until I could get it to the dealership purchased from. They could not find anything wrong. Two weeks later it failed again. Tow truck took it to another dearlership. They changed another part relative to the fuel system and said it "may" be fixed. I refuse to pick it up or drive it again; it's dangerous and undependable. Have asked gm for another car and I am waiting for their response.