Timing Chain, Crankshaft Sprocket, Camshaft Position Actuator, and Solenoid Valve Removal

Special Tools

• J-8433  Two Jaw Puller
• J-41558  Crankshaft Sprocket Remover
• J-41816-2  Crankshaft End Protector
• J-42386-A  Flywheel Holding Tool

Equivalent regional tools: Special Tools 

1. Courtesy of GENERAL MOTORS COMPANY

   NOTE:

   • Do not use the camshaft position (CMP) actuator solenoid valve again. Upon installation of the CMP actuator and timing chain, install a NEW valve.
   • Do not apply threadlock to the flex plate bolts at this time.

   Temporarily install the automatic transmission flex plate and bolts. Automatic Transmission Flex Plate Installation 

2. Courtesy of GENERAL MOTORS COMPANY

   CAUTION:

   Refer to Fastener Caution .

   Install the J-42386-A  tool (1) and bolts. Use 1 M10 - 1.5 x 120 mm and 1 M10 - 1.5 x 45 mm bolt for proper tool operation. Tighten the J-42386-A  tool bolts to 50 N.m (37 lb ft).

3. Courtesy of GENERAL MOTORS COMPANY

   Remove and DISCARD - Camshaft Position Actuator Solenoid Valve (234).

4. Courtesy of GENERAL MOTORS COMPANY

   WARNING:

   Refer to Camshaft Position Actuator Removal and Installation Warning .

   Loosen and separate the CMP actuator and timing chain from the camshaft. Position fingers behind the actuator sprocket and pull the actuator away from the front of the camshaft. Never pull on the reluctor wheel when attempting to remove the actuator.

5. Courtesy of GENERAL MOTORS COMPANY

   Remove the CMP actuator (235) and timing chain (208).

6. Courtesy of GENERAL MOTORS COMPANY

   Insert a tie strap (1) through the center of the actuator and over the reluctor wheel.

7. Courtesy of GENERAL MOTORS COMPANY

   Remove the bolts (231) and timing chain tensioner (232).

8. Courtesy of GENERAL MOTORS COMPANY

   Use the J-41816-2  protector (1), the J-41558  remover (2), bolts (3), and the J-8433  puller (4) in order to remove the crankshaft sprocket.

9. Courtesy of GENERAL MOTORS COMPANY

   Remove - Crankshaft Sprocket (207).

10. Courtesy of GENERAL MOTORS COMPANY

    Remove the crankshaft sprocket key, as required.

11. Remove the flex plate and bolts. Refer to Automatic Transmission Flex Plate Removal .
12. Remove - J-42386-A  tool and bolts.