GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1276768  Size: SH
  1. Remove the left exhaust camshaft position actuator oil control valve (8). Refer to Camshaft Position Actuator Oil Control Valve Replacement - Bank 2 (Left Side) Exhaust .
  2. Pull the actuator forward to disengage the camshaft alignment pin from the actuator.
  3. Disengage the secondary timing chain from the actuator and remove the actuator.

Installation Procedure


    Object Number: 1285137  Size: SH
  1. Locate the camshaft alignment pin hole (2) on the back of the actuator.

  2. Object Number: 1272586  Size: SH
  3. Locate the timing alignment mark (1) on the front of the actuator.

  4. Object Number: 1276768  Size: SH
  5. Engage the actuator timing gear teeth with the secondary timing chain ensuring that the actuator alignment mark (7) corresponds with the paint mark created on the chain link.
  6. Slide the actuator over the camshaft alignment pin and install the actuator onto the camshaft.
  7. Install the left exhaust camshaft position actuator oil control valve (8). Refer to Camshaft Position Actuator Oil Control Valve Replacement - Bank 2 (Left Side) Exhaust .