For 1990-2009 cars only

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

First and Fourth Gear Only - D4 for GMC Truck GMC K Sierra - 4WD 2002

Checks

Cause

1-2 Solenoid (313)

•

Stuck On

•	Pinched wire to ground

1-2 Shift Valve (314)

Stuck

PCM Quad Driver Module

Failed

Check the PCM for current DTCs.