Test Description
WARNING: This page is about a different car, the 2002 GMC Cab & Chassis Sierra and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The number listed below refers to step number in the diagnostic procedure:
- 2
This step tests for proper operation of the ISS. - 6
This step tests for proper ISS circuit operation up to the PCM connections. Remove the fuel pump relay to eliminate a flooding condition during this step.