IllustrationBRAKE LINE SEVERED BY ROAD DEBRIS. *JB
2003 GMC W4500
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all W4500 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 0 of 1 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Service Brakes, Hydraulic. Review the 1 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
0 crash reports0 fire reports0 injury reports
Service Brakes, Hydraulic complaints
1 reportsOfficial recalls
105V168000 · Fuel System, Diesel:storage:tank Assembly
Apr 20, 2005
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.
Consequence & remedy
Consequence: 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.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.