Third and Fourth Gear Only - D4. GMC Truck GMC C Sierra

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 2002 🢒 GMC C Sierra - 2WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L80-E 🢒 Third and Fourth Gear Only - D4

Checks

Cause

2-3 Solenoid (311)

•

Stuck On

•	Pinched wire to ground

2-3 Shift Valve (312)

Stuck

PCM Quad Driver Module

Failed

Check the PCM for current DTCs.