One problem related to automatic transmission control module has been reported for the 1999 Chevrolet C3500. The most recently reported issues are listed below.
When releasing accelerator pedal vehicle will not slow down and it will maintain speed. Dealer has attempted to fix defect, but was not able to. Presently, dealer claimed it was normal characteristic. Pcm failure cause the vehicle not to slow down when accelerator is released.
| Axle Shaft Seal problems | |
| Automatic Transmission Control Module problems |