GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1276769  Size: SH
  1. Remove the right exhaust camshaft position actuator oil control valve (1). Refer to Camshaft Position Actuator Oil Control Valve Replacement - Bank 1 (Right Side) Exhaust .
  2. Pull the actuator forward to disengage the actuator from the camshaft alignment pin.
  3. Disengage the secondary timing chain from the actuator and remove the actuator.
  4. Clean and inspect the camshaft timing drive components. Refer to Camshaft Timing Drive Components Cleaning and Inspection .

Installation Procedure


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

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

  4. Object Number: 1276769  Size: SH
  5. Engage the actuator timing gear teeth with the secondary timing chain ensuring that the actuator alignment mark (3) 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 right exhaust camshaft position actuator oil control valve. Refer to Camshaft Position Actuator Oil Control Valve Replacement - Bank 1 (Right Side) Exhaust .