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Home >> Pontiac >> 1985 >> T1000 L4-98 1.6L >> Repair and Diagnosis >> Transmission and Drivetrain >> Automatic Transmission/Transaxle >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> 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.