Problems with 2005 GMC Envoy FUEL SYSTEM, GASOLINE

Inaccurate fuel gauge resulted in running out of gas twice while driving on the expressway; one of the events nearly resulted in an accident.

My 2005 gmc envoy's gas gauge has been broke since it had 70,000 miles. it now has 104,000, but i have been tracking fill ups by mileage for over three years now. everyone i know that has a trailblazer or envoy has the same issue. *tr

Sporadic failure of speedometer - registers correctly one moment, or may read 30 mph or 0 mpg when keeping with the flow of traffic on the interstate. while this does not occur each trip, it does occur several times each week. fuel gauge malfunction - reads one-half tank at 179 miles; 20 miles later reads one-quarter tank. issues "fuel level low" warning after refueling and for next 3 to 4 times vehicle is started headlights dim briefly when accelerator is released. frequent need to replace exterior lamps the problems first manifest in the need to repeatedly change brake and taillight bulbs, and the dimming of the headlights, which continues. then, sporadically, the speedometer stopped functioning, or only registered a fraction of the speed the vehicle was traveling. after that, at start up, the "fuel level low" warning, which activates when the vehicle determines it has fuel to travel 40 additional miles, started to chime when there was more than one-half tank of fuel. the warning also now issues whenever the vehicle is refueled. the potential failure of the exterior lighting system presents a clear hazard to the occupants of the vehicle and others - the driver wouldn't be able to see where he is going, and other drivers wouldn't be able to see the vehicle heading toward them. the fuel system issues could lead to unexpectedly running out of fuel, creating the potential for a disabled vehicle or its driver being hit by another. in addition, depending on the cause of the malfunction, the vehicle could be susceptible to fire. without a functioning speedometer, the driver can easily travel too fast for conditions, or endanger himself and others in a construction zone. currently, until the sporadic problems become regular, the garage will not fix the vehicle. *tr

The instrument lights regularly blink in and out on my 2005 envoy. there have even been times when the headlights blink off and on for no known reason. has happened a few times over the last 3 or 4 years. scary stuff! plus, i have read on several forums that this is a common problem with these vehicles. one fellow said he took it into the shop and they could not find the problem. recall - and now the problems with the gas gauge and check engine light. my husband was laid off from his job and we can't even afford the 1/2 that gm is offering to fix the thing in their recall. if they knew it was a failure of their equipment why are they not paying the entire amount? *tr

Gas gauge has not worked since 2007. headlights and some dash lights as well as ext temp gauge sometimes flicker. no positive response from dealer for gas gauge. was initially told headlights were supposed to do this, a "feature". i asked them to document this for me, they said they would look at it. replace body control module, no change. said it could be this or that, but out of warranty at my expense. i told them i would pay for it, but if it did not fix the problem i would not. they refused to work further on it. *tr

Right after the warranty ran out on my 05 gmc envoy the gas gauge started beeping when you would fill up the tank. then it started to not read full when it was filled. now it never reads full and when the tank is half empty the light will come on. it will always beep when i first start it. this unit should not have went out after 36,000 miles. this is a faulty unit and i believe the manufacturer should replace it. if i was to replace it myself it would cost me over $500.00 . terrible product terrible product that should be investigated. *tr

Tl*the contact owns a 2005 gmc envoy. the contact stated that the low fuel indicator illuminated when the gas tank was full. the mechanic stated that the float needed to be replaced. the failure mileage was 44,000 and current mileage was 46,000.

I have a 2005 gmc envoy. the envoy began experiencing problems at approximately 58, 000 miles when the gas tank began reading empty no matter how much gas was in the tank. eventually, after much complaining to my local dealership they stated they would only repair the problem if i paid for half of the repairs. i refused. later, at approximately 80,000 miles, my speedometer began malfunctioning. the speedometer works intermittently, just recently it was stuck at 120 mph even in park. now, the battery gauge has begun to malfunction. the battery charge ranges from the lowest to the highest with no real rhyme or reason. it is apparent by reading on the internet forums that this is a major product defect as it happens to many, many gmc owners, especially 2002-2005 envoy owners. i have filed complaints with gmc directly and received responses that are not satisfactory. these items should be a recall effort and repaired by gmc as they are clearly product default not just general ware and tear of the vehicle. these problems are costly and present safety issues while driving. *tr

Repeat problems since car was purchased brand new at dealers. air /o2 sensors defective/replaced. defective fuel pump/fuel sensor/electronic gas gauge; flickering/dimming headlights; freezing/inability to control driver's side seat and controls. 1/4 of front instrument panel lights out; drivers side seat control lighting 1/4 out; check engine light and low fuel light on continuously since 1997. tie rods both replaced as well as both front sway bars. immediately following vehicle purchase, check engine light would continuously go off. i would call onstar at which point i was told to take car in for repair w/i 7-10 days (often told a problem w/powertrain or transmission) . at dealers service dept, told over and over again after tons of worry, concern and time spent, that electrical system on this car tends to trip/trigger check engine light and they would just reset it so after awhile, i began to disregard the light as i was in the dealership almost weekly. approx 2 yrs after purchase, filled up gas tank and fuel light showed "low fuel". went back up to full, dropped to 1/2 and back to empty. went back to full after car was turned off and continued to do this. after about 2 weeks, constantly stays at empty. called repair shop and was told approx $700-800 to drop tank and replace fuel sensor which i could not afford and began to track odometer and refill tank after 200 miles driven after fill up. have been doing this for 5 years. jan 29,2011, i go for emission test. fail d/t low fuel and check engine light being on. go to mechanic, approx $950 repair. check engine light goes off...and back on next day. read thousands of posts online and am finding many, many envoy owners experiencing same problems as mine. these are safety issues and gm should issue a recall on entire fuel and electrical system. please call for questions/clarification. *tr

First the engine started making noise and the engine light came on, the dealer replaced a belt for 200.00. secondly the gas gauge stopped reading fuel levels, dealer stated that the sensor was dead and would cost 300.00 to replace. next the engine died in the middle of the street. the vehicle will not turn over and the engine light is back on. also they had a sunroof installed for me. a week after purchase the sunroof started to open and close even when the car was shut off, it was repaired but now i am having the same problem again. *nm

Vehicle has intermittent throttle problem that causes the throttle to surge and the headlights to go dim to bright and dash lights to go dim to bright. this condition happens intermittently, and the dealership states there is no problem. this condition is most dangerous when driving in confined spaces such as parking lots. i have taken this problem to the selling dealership four times since july 2006 and continue to be told there was no problem.*ak

Dt*: the contact stated while driving uphill at no particular speed, the engine stalls and operates at a reduced speed. additionally, the headlights intermittently work at night and the gas gauge provides an incorrect display of the proper fuel level. although the vehicle was seen by a dealer numerous times, the dealer was unable to duplicate the problem. the consumer stated the electrical system is faulty. the left front window dropped the lights became dim and the battery failed. updated 04/06/06. *jb

Tl*- the contact owns a 2003 gmc envoy. the headlights, dashboard, and tail lights flashed randomly at any speed, this failure started in october of 2006. the weather and time of day were not factors in the failure. the dealership said that the failure was normal. there were tsbs for the failure, as well as for several others. the fuel neck had been replaced twice due to a design change. the seal around the licenses place holder came loose and had to be replaced. the brake pedal was squeaking, the contact took vehicle for service on three occasions, and replaced the serpentine belt twice, an airbag sensor, the rear wiper arm, the oxygen sensor twice ,the first time at 7000 miles. there were cruise control failures, when the contact tried to accelerate it hesitated and then surged. the weather stripping on the rear doors has been repaired three times. the abs would skip on a bumpy road and would not engage. at one point the contact could smell fuel in the passenger compartment and vehicle had very poor gas mileage, the dealer stated that there was nothing wrong with the vehicle, but air valve became stuck and would not close. the rear door hinges squeaked. this winter it won't go to full voltage until a minute elapsed after the vehicle has been started. the original failure mileage was 3829, and the current mileage was 23700.*ak the brakes were inoperative, the belts squeaked, there was a problem with the abs, the air bag light illuminated, the cruise control didn't work properly, the rear wiper would only wipe the middle of the back windshield. a new fuel neck was installed. updated 03/15/07. *jb

My son was killed in a rollover accident on 4/18/06. he was ejected through the driver's side door in which the top part of the door was pulled away from the roof of the car during the rollover. by looking at the tire tracks of the accident, he was just entering the on ramp of the road and the tracks show no skid marks, swerving, etc, just a straight line into the ditch as if he didnt have control of the steering or brakes, possible stalling ?? both tires on the driver's side were flattened. air bags were never deployed. *nm