gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Rocker Arm Assembly|Service and Repair > < Rocker Arm|Page 1753
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Rocker Arm Assembly: Adjustments

VALVE ADJUSTMENT

The 4.3L engine has screw-in rocker arm studs with positive stop shoulders. No valve adjustment is necessary. When the valve train requires service,
tighten the rocker arm nuts to 27 Nm (20 ft. lb.).

Rocker Arm Assembly|Service and Repair > < Rocker Arm|Page 1753