Circuit/System Testing (without LY6, L76)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. 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 Engine Front Cover Removal (RPO LY2/LC9/LY5/LMG) or Engine Front Cover Removal (RPO LY6/L76/L92) , 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 (LC9, LH6, LMG, LY2 and LY5)
or Engine Front Cover Replacement (LY6, L76 and L92)
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 damage, replace as necessary.