Circuit/System Testing
WARNING: This page is about a different car, the 2007 GMC Sierra, 2007 GMC Cab & Chassis Sierra, 2007 Chevrolet Silverado, and 2007 Chevrolet Cab & Chassis Silverado. 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 (LH6, LMG, LY2 and LY5) or Timing Chain and Sprocket Replacement (LY6, L76 and 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 (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 Timing Chain and Sprockets Cleaning and Inspection
.
- If any components are worn or damage, replace as necessary.