Diesel Data
: Automotive Repair
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Chevy Truck
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1988
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K 1500 Truck 4WD 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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Description and Operation
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3L80/3L80HD (400/475) Automatic Transmission
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Power Flow
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Intermediate Range
Intermediate Range
The manually selected intermediate position adds increased performance for hilly terrain and provides engine braking.