Service Procedure

1. Replace the calibration PROM, using the service procedure from the appropriate service manual.

2. Inspect the PCV connector tee at the upper intake plenum hole. If loose or cracked, replace connector with new connector, P/N 12537524. Inspect the fresh air elbow connector at the left rocker arm cover. If loose or cracked, replace connector with new connector, P/N 12537523.

3. Install the GM Campaign Identification Label.





4. California dealers only, provide owner with a Vehicle Emission Recall Proof Of Correction "certificate".