Circuit/System Verification

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

Verify that DTCs P0480, P0481, P0691, P0692, P0693 and P0694 are not set.
- If any cooling system DTCs are set, repair the DTC first. Refer to DTC P0480, P0481, P0691, P0692, P0693, or P0694 (3.8L (L26)) or DTC P0480, P0481, P0691, P0692, P0693, or P0694 (3.6L LY7) .
Ignition ON, command the appropriate fan relay ON and OFF with a scan tool. Verify that the fans turn ON and OFF when changing between the commanded states.