Sierra 2500 Denali 2WD V8-6.0L (2011)
Do not push or pull on the reluctor wheel of the camshaft position (CMP) actuator during removal or installation. The reluctor wheel is retained to the
front of the CMP actuator by 3 roll pins. Pushing or pulling on the wheel may dislodge the wheel from the front of the actuator. The actuator return
spring is under tension and may rotate the dislodged reluctor wheel, causing personal injury.
10. Use care to install the actuator completely onto the front of the camshaft. Position your fingers onto the face of the actuator sprocket and push the
actuator onto the front of the camshaft. Never push on the reluctor wheel when attempting to install the actuator.
11. Place a straight edge across the front face of the engine block and inspect for proper installation of the CMP actuator and timing chain. With the
CMP actuator properly and completely installed onto the front of the camshaft, the timing chain will not protrude beyond the front face of the
engine block.
12. Install a NEW CMP actuator valve (234). With the CMP actuator properly positioned onto the camshaft, the CMP actuator solenoid valve can be
threaded completely into the camshaft using light hand pressure. Tighten by hand until snug.
