Action Taken When the DTC Sets

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

For DTC P0483:
- The PCM illuminates the malfunction indicator lamp (MIL) during the second consecutive trip in which the diagnostic test has been run and failed.
- The PCM will store the conditions as Freeze Frame/Failure Records data.
- The PCM commands the cooling fan clutch to 100 percent.
For DTC P0493:
- The Reduced Engine Power indicator illuminates.
- The PCM will store the conditions as Freeze Frame/Failure Records data.