Operation CHARM
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GMC Truck
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1989
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C 3500 Truck 2WD V8-454 7.4L
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Repair and Diagnosis
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Transmission and Drivetrain
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Automatic Transmission/Transaxle
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Testing and Inspection
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Initial Inspection and Diagnostic Overview
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Road Test Procedure
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Introduction
Introduction
Perform road test following given sequence, keeping in mind that shift points will vary with actual throttle positions and driving habits. Compare results of test with shift shift chart information.