OEM 2006 Chevrolet Trailblazer Camshaft

2006 Chevrolet Trailblazer Camshaft Parts and Q&A

• Q: How to replace the camshaft on 2006 Chevrolet Trailblazer?

  A: The first step for Camshaft replacement involves removing both the Camshaft cover as well as the intake and exhaust Camshaft sprocket bolts. You should use the Camshaft sprocket holding tool (J 44222) to attach it to the Cylinder Head before adjusting the horizontal bolts into the Camshaft sprockets which both maintain chain tension and prevent disturbances of Timing Chain components. Before removing the Camshaft bolts separate the sprockets with Timing Chain from the camshafts by using a rack to store the Camshaft caps for correct installation. Start by placing the Camshaft caps into storage and afterward detach the camshafts from the engine compartment. Engine oil must be applied to the Camshaft journal surface and its thrust area before positioning the camshafts into their original locations. Clean engine oil should also be used to coat the Camshaft lobes and journals. Use the Camshaft holding tool (J 44221) with its flats facing upwards at cylinder number 1 while the piston is at top dead center position. Use the original positions for the Camshaft caps because their direction and numerical sequence is clearly marked by pin stamping and torque the bolts to 12 nm (106 inch lbs.). First remove both Camshaft holding tools (J 44221 and J 44222). Then place the sprockets securely back onto the camshafts before removing the tools. Drive the intake Camshaft sprocket bolt to 20 nm torque and finish tightening it to an extra 100 degrees using the torque/angle meter (J 36660-A). Tighten the exhaust Camshaft actuator bolt to 25 nm initially before ending at 135 degrees with the torque/angle meter (J 36660-A). Use the torque/angle meter (J 36660-A) to perform two passes on the exhaust Camshaft actuator bolt where the first application provides 25 nm (18 ft. Lbs.) torque then the second maneuver adds 135 degrees rotation. Finally, install the Camshaft cover.