Blazer 4WD V6-4.3L VIN X (2005)
5. Rotate the crankshaft balancer to position the crankshaft balancer alignment mark (1) 57-63 degrees clockwise or counterclockwise from the
engine front cover alignment tab (2).
6. Important: Once the valve rocker arm assemblies are installed and properly torqued, no additional valve lash adjustment is required.
Tighten the valve rocker arm bolts.
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Tighten valve rocker arm bolts to 30 Nm (22 ft. lbs.).
7. Install the valve rocker arm cover.