11 problems related to fuel pump have been reported for the 2005 GMC Envoy. The most recently reported issues are listed below.
Fuel gauge malfunctions and will not work properly. When vehicle is filled to full tank level, there is a click sound and the gauge goes all the way to the empty position, then warning light and very low fuel indicator light comes on. This is the 2nd gm vehicle I have had problems with. Once the warranty expires everything starts to go wrong such as fuel pump/sensor, radiator/fan motor, a/c, front wheel bearings. The more I try to maintain these vehicles the more problems. I will purchase a Honda, Nissan, Toyota next time.
The fuel system started to malfunction around the fist week of sept 2010. I was going on vacation stopped to get gas, after filling up the gas gage read empty and the warning light came on. After shutting the Envoy off and restarting it the gage seemed to work. As the days went on the gage completely quit working and the low fuel light has remained on. I reset my trip meter after every fill up, how annoying. I am not the only consumer with this complaint. I rec'd a letter that gm states its the fuel level sensor. . . The only fix a new fuel pump from a dealer at 50% off? who can afford dealer prices? this is obviously a defect that gm is failing to own up to. Any help would be appriciated.
I'm having the same issue with the fuel gauge on my 2005 GMC Envoy. I can register 1/4 a tank but the minute I fill, the gauge drops below empty and the fuel light comes on. I have to drive at least 25 miles to have it register even a 1/4 of a tank and a full 70-85 miles for the gauge to get to show a more accurate level. The mechanic I went to admitted it was the fuel level sensor causing the issue but advised me that I had to replace the entire fuel pump. He quoted $505 for the fuel pump and an additional $360 for the labor its not fixed I don't have the money, what happens if I run out of fuel on the highway or on a tight turn on a hill and the car shuts down and the steering locks? I've read 1000's of complaints and horror stories about this and no recall. This is extremely dangerous!.
In reference to dp10-001. I have a 2005 GMC Envoy that has an erratic gas gauge as well. After re-fueling the vehicle, the gauge will go to empty and illuminate the empty tank warning light. After driving about 20 miles, the gauge will return to the full position, but will fluctuate occasionally. I have had the problem diagnosed as possible faulty sending unit, faulty gauge and faulty sensors on the fuel pump assembly.
This problem noted below is very very common in both chevy trailblazers and GMC Envoys. Here's one link with over 200 descriptions of this same problem. . Read more...
The contact owns a 2005 GMC Envoy. The contact stated that the fuel gauge fluctuates while driving various speeds. The dealer stated that the fuel pump sensor failed and the fuel pump needed to be replaced. The manufacturer stated that she would be responsible for the repair costs since there were no recalls. The failure mileage was 46,000. Updated 06/24/09. Updated 06/26/09.
Fuel pump not reading gasoline levels causing the gauge in the dash not to work and be on empty at all times. Fuel light also stays on.
2005 GMC Envoy; the fuel gauge has been acting crazy lately, so I decided to research this matter on the internet, and have been finding more and more incidents where the gas gauge either stays on empty or fluctuates from empty back to full and eventually stops working. At appx. 46,000miles, my gas gauge started doing the same as previously stated, going from empty to full, and sporadically repeating this even if the fuel tank was fuel. The fuel gauge being at the empty level, but the tank is fuel, causes a constant alarm bell to go off every 10 seconds or so, everytime you get in the vehicle. I have been trying to find the fuel sensor to replace it, but it seems that you have to purchase the hole fuel pump assembly which runs around $400, and I am not going to replace it, if everyone that has a GMC Envoy or chevy trailblazer are all having the same problems. From what I gather, from my research, everyone seems to have the same problem on all forums that I have read. My vehicle only has 51,000miles on it right now, and this problem has been occurring for about 3 months now.
Fuel gage no longer works on my 2005 GMC Envoy. Which from reading blogs means I need a new sending unit, float, and fuel pump. Have found many blogs on-line about this very problem with Envoys and trailblazers.
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.
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.