Three problems related to other fuel system tank filling/charging have been reported for the 2003 GMC Envoy. The most recently reported issues are listed below.
The fuel fill line is broken from the gas tank. I was filling the tank for holiday travel and the the tank began to leak. Every tank that is ordered by the repair shop is damaged in the same place.
In 2010 after filling my gas tank in my very well kept/serviced 2003 GMC Envoy I began driving home and noticed that my gas gauge wasn't working. The tank was full but the fuel gauge read below the empty. After tapping on the instrument panel, restarting the vehicle, checking fuses, etc nothing worked so I took it to the shop and was advised that GMC has known about this problem for quite some time and won't do anything about it. Either the fuel sending unit or the sensor is bad and must be replaced at a cost $500 - $600. After doing some research I see that this is quite the problem amongst GMC vehicle owners and confirmed that GMC will do nothing about it. . . Now my fuel gauge reads differently at every time the vehicle is started; but it never reads correctly. . . . This should be investigated and GMC should step up and take responsibility for their inferior parts. . . .
It's seems crazy to me that this agency that was created to protect consumers from faulty vehicles can let so many complaints against this manufacturer that was bailed out by taxpayers money can be so blind to the gross negligence on GMC part. I have spent count less hours and way too much money on this vehicle, only to find out that many other consumers are reporting the same problems. I have literally sat down and cried vowing never to by another american made car because they are pieces of junk (and that is putting it nicely). I have paid to replace the oxygen sensor and all that goes with that; the catalyst converter twice; the electrical system throughout the vehicle and now my radio doesn't work because there is a short that is draining the battery when the car is turned off; the speed control (mph/rpm) doesn't work and I only pray that I'm not speeding while I'm driving; the rear wiper blade works when it feels like it; my car interior constantly smells like gasoline and when I'm filling up my tank it there is always spillage; my ses light constantly stays on and since my state practices emission control I hold my breath and pray that I pass the test so I can legally drive my car. These are just some of the problems that I face with this car and frankly this year I'm not working so coming up with the money to pay again to have a mechanic remove the ses light so I can go have the emission testing performed is ridiculous and draining a wallet that is very much empty. My car now has more mileage & I haven't heard my radio in over 2 years because they don't know what is wrong so they just disconnected it. Why haven't the NHTSA/dot required GMC to fix what they know is broken and a hazard on the roads? I would strongly recommend that the NHTSA take this seriously before someone loses control and people lives are lost. Don't let this become another Toyota issue.