Diagnostic Aids

WARNING: This page is about a different car, the 2002 Pontiac Aztek and 2002 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

The scan tool will indicate if a test has failed since the codes have been cleared. Misfire history will be stored and displayed for each of the cylinders at the time of the failure.
The crankshaft position (CKP) system variation learn procedure must be performed if any of the following conditions are true:
1. The PCM has been replaced.
2. DTC P1336 is set.
3. The engine has been replaced.
4. The crankshaft has been replaced.
5. The crankshaft balancer has been replaced.
6. The crankshaft position sensor has been replaced.
If the condition is intermittent, see INTERMITTENT CONDITIONS under SELF-DIAGNOSTIC SYSTEM.