Fourth Gear Starts. GMC Truck GMC P42 Commercial Chassis 1999

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC P42 Commercial Chassis 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L80-E 🢒 Fourth Gear Starts

Checks

Cause

2-3 Shift Solenoid Valve

•

Stuck On

•	Pinched wire to ground

Check the VCM/PCM for current DTCs