2006 GMC Envoy: sudden loss of power

Filed Apr 17, 2015 · Electrical, Fuel system · 77,000 miles · MN

Ignition switch failure at speed causing loss of power to fuel pump which ultimately meant loss of power to vehicle at freeway speeds. Was told by gm that there is no recall on this particular ignition switch at this time.

Filed Aug 17, 2014 · Electrical, Transmission · 83,000 miles · PA

To start off, when you go in drive and start to move the truck lost power to the motor but still stayed running. Seemed like the truck didn't know if it wanted to be in 4x4 or 2 wheel. I took my foot off gas and min later it was fine. Keeps happening . The driver seat back support felt like it started to over heat the motor on it, now not working at all. And sometimes as I use my brakes and come to a stop easy it feels like I lost brakes as if ABS keeps going nuts.

Filed Mar 1, 2013 · Driver assistance · 133,410 miles · SC

At the stop light vehicle stop running engine light stabilitrak light and loss power light came on. Got home twisted the fuel cap a couple of times cranked it up and it went of. This is the second time it has happened.

Filed Jul 27, 2012 · Fuel system · 108,000 miles · OH

Envoy lost power while driving 55 miles an hour down the road. Because I didn't realize it was out of gas I had it towed to a shop thinking there was an engine issue. Shop discovered that it was just out of gas and that my fuel sensor is bad and quoted me $1500 to fix. The gas gauge is never accurate and I have ran out of gas multiple times with two small children in the car. After seeing all the complaints of other people who have the same issue I called gmc and they said that they will only fix for free if it has less than 100,000 miles on it. I only had 108,000 on it when the issue started. How fair is that?

Filed May 16, 2012 · Engine, Fuel system · 80,150 miles · NY

While driving vehicle, started to rough idle and almost caused a vehicle accident because I was unable to stop the car while driving, engine shutdown while driving and lost all power and braking & steering ability, restated vehicle and got burning gas smell from vehicle exhaust pipe and check engine light on with code p0014, got vehicle serviced and had new sensor installed but now getting pinging sound from engine under load and while driving at speed and minor vibration while at idle. I feel this is a serious issue with this vehicle where almost feel unsafe driving vehicle due to running risk of engine shutdown while at speed and unable to steer or brake when engine stalls due to this condition with code p0014 in cars computer. Would really like to be contacted about this issue, gm should have a recall to inspect these systems and provide free repairs of any faulty sensors and provide a full service check on this vehicles. I felt real unsafe to drive this vehicle due to worrying about causing engine damage or having a accident because of this high end failure of this componet

Filed Apr 24, 2012 · Fuel system · 42,000 miles · MA

Last year my 2006 gmc envoy lost power and the engine light came on while I was driving. I had to quickly move out of the way of traffic to avoid a car accident. Gmc also took my money for repairs that should have been covered under the warranty. Recently,04/17/12, I filled my gas tank up and the fuel gauge went to empty after filling. Every time I fill the tank, it goes to empty and then after driving a bit the gauge starts re-registering, 52,000 miles on the vehicle now. Now I believe these two incidents are related and gmc is not being cooperative: to fix at no cost a repair that involves hundreds of thousands of their vehicles. What if I did get into an accident with my family last year? Gmc needs to step up to recall a know defect to the fuel system failures.

Filed May 21, 2010 · Electrical · 64,000 miles · CA

Driving when three lights showed up on instrument panel stabilitrak, check engine and reduced engine power light came on the envoy completely turned it self off. I waited a few minutes then started the car. It started the check engine light was the only light on. I got home and restarted car all lights disappeared. Next day driving the same thing happen. Three more times on the way to mechanic the envoy turned itself off. Find out the programmable control module PCM was defective. This car was purchased as a certified used vehicle 07/08. I then find out the part is readily available and not a special order. They refurbish this part with a one year warranty. I can not believe that gmc would engineer a car to entirely shut down when driving this could have been very dangerous had I been on the freeway going 65 MPH, also that this should not happen as it is not a wear and tear issue. The codes that showed up were apparently not covered by gmc. With this part being readily available I must not be the only one who has had this happen. This was a costly repair, and I feel that someone should look to see if this has happen to others, before someone gets hurt or killed.

Filed Jan 8, 2010 · Driver assistance, Electrical · 50,000 miles · OR

Stabilitrac and/or ABS system engages when not necessary such as driving on dry, straight pavement at highway speeds. Causes vehicle to decelerate suddenly and almost lose control when brakes activate and motor retards. Electrical system also fluxuates (altimeter bounces from low to hi) causing a loss of power with associated loss of steering, lights, braking controls, at any speed. Problem has been increasing (frequency & severity) from july, 2009 to present (jan, 2010). Dealer shop did stabilitrac tsb firmware upgrade (and charged me) w/o correcting problem, also retested and "could not find anything wrong":battery is new but problem persists. 55,000 miles, mostly highway/improved roads. This occurs every time, literally, the vehicle is moved: 30-40 miles/day. 1/6/10 engine developed "low growl" noise and RPM dropped from ~800rpm to ~600rpm at parked idle w/o any apparent cause. Now idle at start is normal, but within 1-2 minutes drops and remains low with growl noise.