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Home >> GMC Truck >> 1989 >> S15/T15 2WD Jimmy V6-262 4.3L >> Repair and Diagnosis >> Transmission and Drivetrain >> Automatic Transmission/Transaxle >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> 3L30 (180/180C) Automatic Transmission >> Short Vibrating Hissing Noise Before 1-2 Upshift

Short Vibrating Hissing Noise Before 1-2 Upshift

1. Reverse clutch dampening cushion wearing into transmission case.

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