Test Description
WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Sierra, 2002 GMC Savana Special, 2002 GMC Savana Camper Special, and 2002 GMC Savana. 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. - 11
This step tests the EVAP canister purge valve for a restriction or blockage. - 19
This step verifies that repairs are complete and that no other condition is present.