2001 GMC Sierra fuel system problems

Filed Apr 1, 2014 · Electrical, Engine · 86,000 miles · IA

When my issues started, I would fill my gas tank and the gas gauge would plummet to empty. While driving, it would go to full, back to empty or be anywhere in between. At that time, there no no mechanical issues, just the annoying fact that you had no idea how much fuel you actually had. This went on until this spring, when I had the first potentially dangerous incident. I was driving down a county highway at approximately the speed limit and the truck's engine just shut off. No power steering, nothing. It happened just as I was coming to a stop sign thankfully. I was about 50 miles from home and was able to call a friend that manages the collision center of a local car dealership to see about getting a tow or his opinion as to what was wrong. After about ten minutes and after numerous attempts, it restarted. I talked to several mechanics and got the same answer from all of them: the fuel pump and sending unit fail in gmc trucks around the mileage, 95,000 miles, that I currently have on the truck. The gas gauge is still erratic, I have had two episodes of the vehicle stalling and now the service engine soon light is coming on and when it is put on an analyzer it says emissions, but there is nothing wrong with the emissions system. I have also talked to owners who have had theirs replaced and everyone says to get a factory made pump because the cheap aftermarkets break down even quicker. I googled the information and the problem appears to be widespread.

Filed Feb 25, 2013 · Brakes, Fuel system · 180,000 miles · NJ

Front brake line failed. Completely rusted, it blew out inside one the clips that hold it in place. Horrible design. Truck is sitting in my driveway because I cannot afford to repair brakes. Estimate was over 1500, just to replace the lines, with coated steel, not stainless. Fuel lines are all rusted as well. All need replacement.

Filed Sep 18, 2012 · Brakes, Fuel system · TN

Backed out of driveway and brake pedal felt soft. Got to end of street and suspecting a problem began slowing early. Brake pedal went to the floor with very little pressure and very little stopping power. Went back to house and found a large puddle of brake fluid where the truck had been sitting. Opened the hood to look at brake reservoir and found it empty but also realized all hard brake lines in view were heavily corroded and crusted. Leak was from burst hard line below driver. All hard lines are heavily crusted and corroded near the point of failure if not already failed. Some fuel lines also corroded.

Filed Aug 17, 2012 · Fuel system · 100,000 miles · PA

Tl* the contact owns a 2001 gmc sierra. The contact stated that the check engine warning light illuminated on the instrument panel. The vehicle was taken to the dealer for diagnosis. The dealer stated that the filler neck was rusted and needed to be replaced. The vehicle was repaired. The manufacturer was not contacted. The failure mileage was 100,000 and the current mileage was 100,005.

Filed Oct 20, 2008 · Brakes, Fuel system · 81,979 miles · MA

State inspection, failed due to rotted fuel filler neck. Was told for awhile it was due to gas cap, replaced that, light would go on and off. When it would no longer go off took back to dealers. Dealership replaced fuel filler neck, along with valve/sensor at a cost of over $500. Gm will not help as they claim it was due to "environmental factors" (we live in ma). Also, parking brake backing plates rusted out, e-brake cables frozen, had to replace those at another $850. Old parts not available, dealer repaired.

Filed Feb 22, 2007 · Fuel system · 75,000 miles · IL

Fuel gauge has been malfunctioning for several months now - sometimes works properly, but other times reads empty when tank is full, reads more fuel than in tank, etc. I have several friends who have this generation of gm full-size truck (gmc sierra, chevy silverado, gmc yukon, chevy tahoe - gmt800 series), and most of them have the same problem. I am told that the issue is with the fuel sending unit.

Filed Aug 3, 2006 · Fuel system · 107,000 miles · AZ

Dt*: the contact stated while driving any speed, the gas gauge goes up and down, and the fuel light flashes. The dealership determined the fuel sending unit needs to be replaced.

Filed Feb 22, 2006 · Fuel system · TX

My gas gauge dances constantly or just stays on empty with gas gauge always on gmc sierra 2001. Sometimes it shows the gas level correctly for about 30 minutes after getting gas then it moves around or goes to empty even though it is not empty.

Filed Jan 11, 2006 · Acceleration, Body · 49,274 miles · ME

Many problems: 4 wheel drive sensor, front end suspension, parking brake, service brakes, anti-lock brakes, speed sensors, radio, center console, engine noise rapping when starting, tailgate cables, anti-theft sensor, and now the battery voltage gauge needle excess dropping when stopping, engine idling to low when stopping. Dealer says problem is normal. Let's test drive a new truck and show me it is normal. This truck is a lemon in my eyes!

Filed Jan 11, 2005 · Fuel system · 44,500 miles · AZ

Vehicle stopped running while driving 20 MPH, with a quarter of tank of fuel registered on the fuel gauge. Dealer was notified, and dealer informed consumerthat the vehicle was not covered under a recall.