Diesel Data
: Automotive Repair
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Chevy Truck
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1988
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S10/T10 P/U 4WD V6-262 4.3L
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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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Harsh 3-2 Detent Downshift at High Vehicle Speeds
Harsh 3-2 Detent Downshift at High Vehicle Speeds
1. High speed downshift valve stuck open.
2. Improper
band
adjustment.