Operation CHARM
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GMC Truck
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1983
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G 2500 3/4 Ton Van V8-350 5.7L VIN L 4-bbl
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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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Description and Operation
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3L80/3L80HD (400/475) Automatic Transmission
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Power Flow
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Description
Description
Figure illustrates the applications of the bans and clutches in all phases of operation. In Neutral or Park no bands or clutches are applied, therefore, no power is transmitted.