Camshaft Timing Chain Removal

Special Tools 

EN-51148  Camshaft Holding Tool

For equivalent regional tools, refer to Special Tools .

1. Adjust the engine to top death center (TDC). Refer to Camshaft Timing Chain Inspection .

2. Courtesy of GENERAL MOTORS COMPANY

   Remove the upper timing chain guide bolts (2).

3. Remove the upper timing chain guide (1).

4. Courtesy of GENERAL MOTORS COMPANY

   Install the EN-51148  holding tool (1) to camshafts and to the cylinder head.

5. Tighten the bolt (3) in the middle.
6. Tighten the 2 both outer bolts (2, 4)

7. Courtesy of GENERAL MOTORS COMPANY

   Push the timing chain guide - left side (2) in the direction of the arrow.

8. Fix the tensioner (1) with a suitable tool (3).

9. Courtesy of GENERAL MOTORS COMPANY

   Remove the 2 timing chain tensioner bolts (2).

10. Remove the timing chain tensioner (1).

11. Courtesy of GENERAL MOTORS COMPANY

    Remove the timing chain (1) along with the crankshaft sprocket (2) and the cam (3).