Test Description

WARNING: This page is about a different car, the 2002 GMC Sierra and 2002 Chevrolet Silverado. 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.

4

This step verifies that a failure condition is active.

5

This step is used to verify if a leak is present.

6

This step verifies proper operation of the FTP sensor.

9

This step tests the EVAP canister purge valve for a restriction or blockage.