Test Description
WARNING: This page is about a different car, the 2002 Pontiac Grand Am, 2002 Oldsmobile Alero, 2002 Chevrolet Monte Carlo, and 2002 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
The numbers below refer to the step numbers in the diagnostic procedures.
- 2
A DTC P0602 indicates the PCM is not programmed. - 4
Attempt to program the PCM. If the PCM fails to program a second time, replace the PCM.