Diesel Data
: Automotive Repair
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Chevy Truck
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1988
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S10/T10 Blazer 4WD V6-173 2.8L
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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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Symptom Related Diagnostic Procedures
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3L30 (180/180C) Automatic Transmission
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Upshift In D or L2 Only at Part Throttle No Detent Upshift
Upshift In D or L2 Only at Part Throttle No Detent Upshift
1. Stuck detent pressure regulator valve.
2. Detent cable broken or adjusted improperly.