First and Second Gear Only

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2001 🢒 Chevy C Cab/Chassis HD (GMT 400) 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L80-E 🢒 First and Second Gear Only - D4

Checks

Cause

2-3 Solenoid (311) - Check for DTCs

•

Stuck Off

•	Loose connector

•	No voltage to the solenoid

•	Solenoid O-ring failure

•	No PCM signal to the solenoid

2-3 Shift Valve (312)

Stuck

PCM Quad Driver Module

Failed

Check the VCM/PCM for current DTCs