GMC C4500 owners have reported 2 electrical system related problems since 1996. Table 1 shows the 2 most common electrical system problems. The number one most common problem is related to the vehicle's electrical system (1 problem). The second most common problem is related to the vehicle's alternator/generator/regulator (1 problem). For details of each of the problem category, use the links in the table.
| Problem Category | Number of Problems |
|---|---|
| Electrical System problems | |
| Alternator/generator/regulator problems |
Unfixable front end vibration. Vibration is severe 8-12 mhz @ . 27g's. Over 10 attempts to fix with no results. 4 sets of tires, drag link, panhard bar, 4 turbo down pipes, front rotors and hubs, may other components. Whole body vibration , arm-hand vibration for over 3,000 hrs in one year. Read details...
At approxiamately 2:15 pm on 9/16/2011 this ambulance was traveling at 55-60 mph in route back to the station after dropping a patient at the hospital, the driver reports that there was a load pop!; followed by a hissing sound under the hood. Read details...