LaCrosse FWD L4-2.4L (2011)
Timing Chain: Service and Repair
Camshaft Timing Chain, Sprocket, and Tensioner Replacement
Special Tools
*
EN-45027 - Tensioner Tool
*
EN-45059 - Angle Meter
For equivalent regional tools, refer to Special Tools (See: Tools and Equipment/Special Tools).
Removal Procedure
1. Remove the number 1 cylinder spark plug. Refer to Spark Plug Replacement (See: Tune-up and Engine Performance Checks/Spark Plug/Service
and Repair).
2. Rotate the crankshaft in the engine rotational direction clockwise, until the number 1 piston is at top dead center (TDC) on the exhaust stroke.
3. Remove the camshaft cover. Refer to Camshaft Cover Replacement (See: Cylinder Head Assembly/Valve Cover/Service and Repair).
4. Remove the engine front cover. Refer to Engine Front Cover Replacement (See: Timing Cover/Service and Repair).
5. Remove the upper timing chain guide bolts and guide.
