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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Service and Repair
Valve Clearance: Service and Repair
ROCKER ARM AND PUSHROD ADJUSTMENT
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The Rocker Arms are adjustable on this engine. Refer to
Rocker Arm / Adjustments.