GMC C4500 owners have reported a total of 27 problems for their cars built in the 6 model years listed in the chart below. The chart shows the number of problems reported across all service years for each given model year of the GMC C4500. The 2005 GMC C4500 cars have the most problems reported (8 problems).
The following chart shows the 12 most common problems for GMC C4500 cars. The number one most common problem is related to the vehicle's service brakes, hydraulic (5 problems). The second most common problem is related to the vehicle's engine and engine cooling (5 problems).