Operation CHARM
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GMC Truck
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1988
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Suburban 1/2 Ton 2WD V8-454 7.4L
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Repair and Diagnosis
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Powertrain Management
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Tune-up and Engine Performance Checks
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Valve Clearance
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Specifications
Valve Clearance: Specifications
ROCKER ARM AND PUSHROD ADJUSTMENT
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Adjust Rocker Arm to Zero lash plus 3/4 additional turn.