Six problems related to other fuel system tank mounting have been reported for the 2003 GMC Envoy. The most recently reported issues are listed below.
While driving the vehicle a strong odor of gas entering the cabin. Fill vehicle up and large amount of gas pours on the ground from under the vehicle. Closer inspection reveals the part that attaches to the gas tank is broken off causing vapors to escape and not providing a seal to contain the smell. While driving on the interstate at normal operating speed vehicle loses oil pressure causing it to drop to 0 and message appears to stop engine. Both incidents are safety hazards and can cause serious life an death incidents if issues are not addressed by the corporation. This occur on interstate 66 in washington, DC. Immediate recall of all vehicles from GMC neeeds to be initiated.
2 years ago the maintenance required light has been on, when checked by 2-3 mechanics they said it could be the gas cap. That didn't remedy the situation, the light stayed on, then recently the fuel gauge started dropping to empty after a little less than half a tank was used. Then filling the gas tank caused it to overflow if you fill it to full. As of today the car when shifted into reverse, something came loose inside the shifter, now it is stuck in neutral.
The contact owns a 2003 GMC Envoy xl. While driving 30 mph, the fuel gauge fluctuated and failed to properly display the amount of fuel in the tank. The lack of fuel caused the vehicle to stall. The vehicle was taken to a dealer, but was not diagnosed or repaired. The manufacturer was not made aware of the issue. The approximate failure mileage was 98,000.
The contact owns a 2003 GMC Envoy. The contact stated that a strong fuel odor emitted inside and outside of the vehicle continuously. Additionally, the engine warning indicator illuminated whenever the vehicle was in operation. The contact received notification of the manufacturer customer satisfaction program related to the fuel tank inlet valve replacement. The remedy part needed to perform the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the repair. The manufacturer was notified of the failure. The failure mileage was unavailable.
It started with engine misfiring causing engine to jolt which damaged #4 coil pack seal to failed allowing water intrusion. In 2008, the GMC mechanic replaced all six coils seals but in 2013-present p0440 engine code is a leak in the evaporative emission (evap). Loose fuel tank filler cap is the most common cause that triggers the p0440 code. I failed a few smog check spending hundreds of thousands of dollars yet my problem still existence. I've contacted the bureau of automotive repair because purrfect auto in fullerton,CA lied about fixing my car. The bar made purrfect auto replace the gas tank and gas cap yet the engine light is still on displaying code p0440. Its been 14 years and I'm still dealing with this problem.
I have 03 GMC Envoy that I take very good care of. I have been smelling gas lately and not seen any gas leaking. The gas odor gradually has been getting stronger and stronger. Eventually I was able to tell that there is a gas leak, but is only leaking a small amount while the truck is running. Now my Envoy reeks of gasoline all the time outside and sometimes inside when the heat is on and idling. Seems the gas pools on an indent on top of the gas tank and when I pull into my driveway(down a steep hill and sharp turn) it all pours out. Seems that everyone is having the same type problems. Seems to me this is a bad design on gm's behalf. . . . . . . Maybe they will step up to the plate and fix this obvious defect. I wonder if they still produce them like this? I can only assume that this affects so many other models. Yikes! that's a lot of people who are in danger or got stuck with a lofty repair bill.