First and Second Gear Only - D4. Chevrolet Avalanche

For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2004 🢒 Avalanche - 4WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L80-E/4L85-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

Check the PCM for current DTCs.