Circuit/System Testing
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.
IMPORTANT:
You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.
- Inspect the engine front cover area, or review the service history of the vehicle for any recent repairs involving the timing chain, timing chain tensioner, camshaft, crankshaft, camshaft actuator, or sprockets.
- If recent repairs were made, refer to Timing Chain and Sprocket Replacement , and inspect the timing chain, timing chain tensioner, and both sprockets for proper timing alignment or indexing.
- Remove the engine front cover, refer to Engine Front Cover Replacement
and inspect the timing chain, timing chain tensioner, and sprockets for wear or damage. Refer to Camshaft Timing Chain and Sprocket Cleaning and Inspection
.
- If any components are worn or damaged, replace as necessary.