GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2006 🢒 Chevrolet W-Series Commercial W4 (W3500/W4500) 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L80-E/4L85-E 🢒 Fourth Gear Starts

Fourth Gear Starts for Chevrolet Chevrolet W-Series Commercial W4 (W3500/W4500) 2006

Checks

Cause

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

Check the PCM for current DTCs.