Hello I have had several recurring issues with my fuel pump system. I have had one actual fuel line break in half and pour diesel out while I was driving down the road. Also the fuel pump on the vehicle has come a loose from the engine twice breaking the four lug nuts that hold the fuel pump to the engine, which also caused fuel to leak.
The worst 2006 GMC W4500 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Fuel system2
- Electrical1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Fuel system2
- Electrical1
Recalls 3
Fuel system, gasoline: storage: tank assembly
- What is wrong
- Isuzu Manufacturing Services of America (Isuzu) is recalling certain model year 2006-2008 Isuzu NPR and NPR-HD and Chevrolet W3500 and W4500 trucks manufactured March 16, 2005, to August 13, 2008 and 2006-2008 GMC W3500 and W4500 trucks manufactured July 18, 2005, to August 13, 2008. The affected vehicles have a fuel tank that may corrode and leak fuel.
- Risk
- A fuel leak in the presence of an ignition source increases the risk of a fire.
- Remedy
- Isuzu will notify owners, and dealers will replace the fuel tank, free of charge. Isuzu issued an interim notification to owners on December 18, 2015. The recall began on April 8, 2016. Owners may contact Isuzu customer service at 1‑866‑441‑9638.
Recall number 15V704000 · Recall details
Engine and engine cooling
- What is wrong
- Isuzu is recalling certain model year 2006-2007 isuzu npr, nqr, nrr, gmc w3500, w4500, w5500, and chevrolet w3500, w4500, and w5500 vehicles. The oil pipe bolts were not tightened properly during the vehicle production process. If not adequately tightened, the bolt may loosen after prolonged vehicle operation, which can result in oil seepage or leakage from the packing seals. In general, as oil is lost, the oil warning lamp will illuminate, and there may be abnormal engine noise and loss of oil can cause engine seizure.
- Risk
- If the engine seizes while the vehicle is being driven, the vehicle may experience sudden deceleration leading to an increased risk of a crash.
- Remedy
- Dealers will replace the packing seals with new ones and the bolt will be tightened with a specified torque. This service will be performed free of charge. The safety recall began on january 28, 2011. Owners may contact isuzu at 1‑800‑255‑6727.
Recall number 10V636000 · Recall details
Fuel system, diesel
- What is wrong
- Isuzu is recalling 16,859 my 2006-2007 isuzu npr, nqr, nrr, gmc w3500, w4500, w5500 and chevrolet w3500, w4500, w5500 trucks equipped with diesel engines. Diesel fuel may seep or leak from the fuel pipe at the upper or lower fuel port on the diesel fuel supply pump.
- Risk
- Fuel leakage, in the presence of an ignition source, could result in a fire.
- Remedy
- Dealers will inspect the vehicles and if no seepage or leakage is detected, the fuel pipe fittings will be tightened. If seepage or leakage is detected, the fuel supply pump will be replaced with a new one. The recall will begin on june 30, 2008. Owners may contact isuzu at 1‑800‑255‑6727, gmc at 1‑866‑996‑9463, or chevrolet at 1‑800‑630‑2438..
Recall number 08V251000 · Recall details
Technical service bulletins for the 2006 GMC W4500 121
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.
- Unknown or other
- This service bulletin provides information for dealers/technicians on When and How to Submit a Field...
- Unknown or other
- Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles
- GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities
- This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves...
- This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as...
- This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid.
- This Warranty Administration bulletin provides retail and wholesale service personnel with the...
What 2006 GMC W4500 owners say
Most recent owner complaints, unedited.
Truck is warming up very easy and the alarm is turning on after drive couple miles.
Tl* the contact owns a 2006 general motor company w4500. The contact was driving when the vehicle stalled, and the contact noticed there was diesel fuel leaking. The vehicle was towed to a private mechanic and who confirmed that the fuel pump failed. The manufacturer was contacted and confirmed the VIN did not qualify for the federal safety agency recall campaign id number :08v251000(fuel system, diesel). The vehicle was not repaired. The failure and current mileage was 155,000.
Compare the 2006 GMC W4500
Other model years
Questions about the 2006 GMC W4500
Is the 2006 GMC W4500 reliable?
Owners have filed 3 complaints about the 2006 GMC W4500, 3.0 times a typical W4500 model year.
What is the most common problem with the 2006 GMC W4500?
Fuel and propulsion system, with 2 complaints. Next is electrical (1).
How many recalls does the 2006 GMC W4500 have?
3 recalls, covering fuel system, gasoline, engine and engine cooling and fuel system, diesel.
Was there a recall on the 2006 GMC W4500 fuel system?
Yes, 2 recalls: 15V704000, 08V251000. Check your VIN to see if your car still needs the free repair.
VIN decoder
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