GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC P42 Commercial Chassis 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L80-E 🢒 Transmission Overheats at WOT

Transmission Overheats at WOT for GMC Truck GMC P42 Commercial Chassis 1999

Checks

Cause

Converter Limit Valve Bypass Orificed Cup Plug

The plug is blocked, therefore the converter limit valve is stuck closed.