GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2001 🢒 Chevy C Cab/Chassis HD (GMT 400) 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L80-E 🢒 Fourth Gear Starts

Checks

Cause

2-3 Shift Solenoid Valve
    • Stuck On
    • Pinched wire to ground

Check the PCM for current DTCs.