GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC P42 Commercial Chassis 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L80-E 🢒 Harsh Shift 3 to 4

Harsh Shift 3 to 4 for GMC Truck GMC P42 Commercial Chassis 1999

Checks

Cause

Spring Assembly (532)

Not compressing evenly

Air Bleed Orifice 4th Clutch Housing (530)

Plugged