Colorado 2WD L4-2.8L VIN 8 (2004)
Variable Valve Timing Actuator: Service and Repair
Exhaust Camshaft Position Actuator Replacement
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Tools Required
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EN-44217-45 Chain Holding Tool
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J44217 Timing Chain Retention Tool
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J 44221 Camshaft Holding Tool
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J 45059 Angle Meter
Removal Procedure
1. Remove the camshaft cover.
2. Ensure the exhaust Camshaft Position (CMP) actuator is functioning properly.
3. Remove the CMP sensor.
4. Rotate the crankshaft in the engine rotational direction clockwise, until the #1 piston is at Top Dead Center (TDC) on the compression stroke. The
word Delphi on the exhaust camshaft position actuator will be parallel with the cylinder head to cam cover mating surface.
5. Using the timing mark on the exhaust camshaft position actuator sprocket as a reference, make a mark on the timing chain link adjacent to it.
Caution: Refer to Camshaft Holding Tool Caution in Service Precautions.
6. Install the J 44221 to the rear of the camshafts.
