Diagnostic Aids
WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
Check for the following:
- DTCs in the powertrain control module
- If the speedometer operates normally, the VSS is OK
- Open or high resistance in the PPL/WHT wire between the left instrument panel junction block C 3 and the cruise control module
- Faulty cruise control module
An intermittent may be caused by a poor connection, rubbed through wire insulation or a wire broken inside the insulation. Inspect the following harness connectors for backed out terminals, improper mating, broken lock, improperly formed or damaged terminals or for poor terminal-to-wire connection before replacing the suspect component:
- Cruise control module connector
- Left instrument panel junction block C 3