2006 GMC Envoy Denali XL: check engine light

Filed Dec 9, 2011 · ME

I own a 2006 envoy denali and last may 2010 I was driving down the a busy highway around 55 miles an hour and the truck just lost all power and completely shutdown. It took aleast three tries before I could get it started again. I was so scared that a tracker trailor would hit me from behind. It didn't do again for a week , and then it happened again. I brought the truck to the shop and the throttle body was replaced at about 65,000 miles. Now its a year later and I again was driving on the highway and the truck engine light came on and all power was lost. I put my hazards on but could only get the truck to about 15 miles an hour so that I could get out of harms way. I called gmc to make an complaint as it is very rare to have to replace a throttle body every year. I take care of my truck and see no reason why it happening other than gmc defect. Gmc did not help me and just said there were no recalls and that it was normal wear and tear. I no this to be untrue and I am very disappointed with gmc and will never buy the product again. I have had nothing but issues with this truck, and after looking into it there are several other envoy owners that are having the same problems as I am. I don't drive on the highway if I can help it at all, getting stuck in the middle lane with a truck that won't move is way to scary. Gmc should have to make it right and recall the truck and figure out why the throttle body fails.

Filed Sep 20, 2011 · Fuel system · 44,000 miles · CA

With no advance warning, the fuel gauge started reading empty immediately when tank was filled. Possibly related or not, the flap in the fuel filler neck disappeared about the same time the problem started. Once the problem began, the fuel light would come on when the car was started and would stay on constantly. The check engine light is always on as well. As fuel level decreased sometimes the gauge would apparently read correctly (e.g. Below 3/4 tank). Stopping or starting sometimes caused the gauge to fluctuate; often the gauge goes up and down several times a minute. Over the last eight months the condition has worsened and the gauge often reads empty, with occasional swings up to approximately correct level (estimate based on miles driven since filling tank). However, the gauge never went below 1/8 tank, even though it was less than two gallons from empty in a 24-gallon tank.

Filed Jul 29, 2011 · Fuel system · 60,000 miles · MD

I am the owner of the gmc envoy denali, 2006 model vehicle. The gas tank sensor after a fillup began to malfunction. Specifically, the tank was filled, however, the gas tank fill indicator remained on empty. The failure of the sensor has caused the "check engine" light to come on and remain on.

Filed Jul 17, 2011 · Fuel system · 65,000 miles · NJ

2006 envoy denali check engine light came on fuel gauge stopped working properly. Dealer says it is the sending unit. If this is common shouldn't there be a recall.

Filed May 23, 2011 · Fuel system · 55,000 miles · OK

Tl* the contact owns a 2006 gmc envoy denali xl. The contact stated that the check engine warning light illuminated. The fuel gauge also fluctuated between empty and full andwould not provide an accurate reading. The dealer was informed of the fialure and the contact was awaiting a service appointment. The manufacturer was not aware of the failure. The current mileage was approximately 56,000 and the approximate failure mileage was 55,000.

Filed Apr 1, 2010 · Fuel system, Visibility · 40,000 miles · NC

Tl*the contact owns a 2006 gmc envoy denali. The contact stated that in october 2009, he noticed that the fuel gauge would "flutter" and register that it was empty when he added gasoline to the fuel tank. After consuming five to seven gallons of fuel, the fuel gauge would begin working normal until the it was time to add the maximum amount of fuel in the tank. The check engine light also illuminated and the heater would blow cold air on the driver side and hot air on the passenger side. The vehicle was taken to the dealer where the sending unit in the fuel tank was replaced and the heater was reprogrammed; however, the heater still did not function properly. The VIN was unavailable. The failure mileage was approximately 40,000. The current mileage was approximately 46,000.

Filed Feb 3, 2009 · Fuel system · 49,000 miles · MA

After filling gas tank, fuel gauge did not operate properly, going from empty to full repeatedly. Check engine light came on also.

Filed Oct 15, 2007 · Fuel system · 21,000 miles · NJ

While driving, check engine light came on. Fuel tank gauge started to continually shift from whatever state the fuel tank was in to empty then after some time revert back to normal fuel capacity at the time. Contacted onstar for a diagnostic and they stated there is a problem with the fuel sending unit.