Most common 2007 GMC W4500 problems
Share of the 2 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
GMC W4500 complaints by model year
Best W4500 years: 2008, 2009. Compare all years →
2007 GMC W4500 recalls (4)
Fuel system, gasoline › Storage › Tank assembly
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.
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.
Engine and engine cooling
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.
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.
Trailer hitches
Knapheide is recalling 108 my 2006-2008 pro series truck beds equipped with an icc bumper which included a provision for a ball hitch. There May be an insufficient weld attaching the hitch channel to the supporting structure.
Remedy: Knapheide will offer two remedies to its customers: (1) for those customers who do not use the hitch, the hitch will be removed from the truck bed and replaced with an icc bumper; or (2) for those customers who need a…
Fuel system, diesel
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.
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.
Frequently asked questions
Is the 2007 GMC W4500 a good car?
Based on 2 owner complaints filed with NHTSA, the 2007 W4500 rates few complaints: 2.0× as many complaints as a typical year of the W4500 at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2007 GMC W4500?
The engine & cooling — 1 complaint, 50% of all complaints for this model year, most often about exhaust system. Next is the fuel & propulsion system (1).
How many recalls does the 2007 GMC W4500 have?
There are 4 recalls for the 2007 GMC W4500, the most recent from October 26, 2015 (tank assembly). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the GMC W4500?
The best years by complaints, compared at the same age, are 2008 and 2009. See the full GMC W4500 years comparison.
At what mileage do 2007 GMC W4500 problems happen?
The median mileage reported in complaints is about 139,000 miles; 0% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.