Brake line severed by road debris.
The worst 2003 GMC W4500 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Brakes1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Brakes1
Recalls 1
Fuel system, diesel: storage: tank assembly
- What is wrong
- On certain trucks equipped with rpo ik9, due to insufficient durability and testing, the fuel switching manifold solenoids lack water or salt intrusion resistance, which can lead to failure of one or more solenoids. Fuel switching manifold solenoid failure will cause incorrect fuel delivery resulting in fuel overflow from the fuel filler neck.
- Risk
- Overflow fuel may result in high amount of diesel fuel leakage. Fuel leakage, in the presence of an ignition source, could result in a fire.
- Remedy
- Dealers will replace the solenoid valve assembly with an improved assembly including additional detection circuit and enhanced water resistance free of charge. The recall began on october 27, 2005. Owners may contact isuzu at 1‑800‑255‑6727.
Recall number 05V168000 · Recall details
Technical service bulletins for the 2003 GMC W4500 78
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.
- This Preliminary Information communication provides information to the technician about changing the tire...
- 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 Warranty Administration bulletin provides retail and wholesale service personnel with the...
- This bulletin provides information for electrical ground repairs using new General Motors replacement...
- This technical bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake...
- This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil...
What 2003 GMC W4500 owners say
Most recent owner complaints, unedited.
Compare the 2003 GMC W4500
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Questions about the 2003 GMC W4500
Is the 2003 GMC W4500 reliable?
Owners have filed 1 complaint about the 2003 GMC W4500, close to a typical W4500 model year.
What is the most common problem with the 2003 GMC W4500?
Brakes, with 1 complaint.
How many recalls does the 2003 GMC W4500 have?
1 recall, covering fuel system, diesel.
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