Four problems related to other fuel system tank mounting have been reported for the 2005 GMC Envoy. The most recently reported issues are listed below.
Fuel sensors affecting proper read out on fuel guage. Window an door lock switches on driver side door does not work properly. Works when it wants to. Clips on headlight an grill assembly constantly coming loose. I have contacted gm. About wrong fuel readings they told me the problem is fuel sensors in the tank but will not pay for repairs due to closed recall. This problem has resulted in running out of fuel mutiple times. Even though this problem and other problems has just recently started. The cost is over 600. 00 dollars that I should not have to pay. . . . .
Fuel gauge indicated nearly 1/4 tank and the car ran out of gas. From that time forward the fuel guage would bounce back and forth from empty to full right after I filled completely up. It would start to work properly after about 40 miles or so. I was told by a mechanic that my running out of gas may have had an effect on the calibration of the level sensor since it was only doing it when it was completely full and then would work fine after awhile. The problem continued to get worse, it continued to bounce back and forth when the tank was full, but within a few weeks started to do the same thing once the tank got down to around 1/2 full. It continued to get worse and now continually stays on empty. My check engine light would also come on when the sensor was going crazy, and now that its always on e, the engine light is continually on. I have to completely fill my tank and set my trip odometer everytime I fill up so that I have some idea of how much gas I have, but it has still caused me to run out two additonal times since the initial time I ran out and I realized there was a problem. I have taken it to a dealership and was quoted a huge amount of money to have it fixed, especially since I have recently found out this is a very common problem with the sensors on gm trucks from that time frame and gm issued a recall notice. My truck currently has just under 117,000 miles on it. I bought it used from a gm dealer in 2010, and have not recieved any recall notification.
The fuel gauge became erratic. The first thing that happened was when the fuel tank was filled, the gas gauge went to empty and the fuel light came on as if there were no fuel. It remained that way for some time. It then would fluctuate wildly until a large amount of gas had been used. Now not sure if it is accurate, even though the gas light has gone off and it is no longer displaying as empty.
Inaccurate fuel gauge reading. Car can run out of gas unless carefully monitored by operator. Gauge became faulty with time when car was 3. 5 years old. At first when tank was filled, the empty light would come on and then suddenly register as full after approximately 20 miles of operation. Gauge now only registers 1/4th tank or not at all after tank is filled. Without careful watch, the car could run out of gas on a highway and be struck or cause significant problems. Dealer estimated cost of repair = $650. 00 and stated that it was a common problem for this make and model. I do not wish to pay this exhorbitant amount for repair. It appears from my research that this is a very dangerous problem and rampant with this make and model.