For 1990-2009 cars only

Makes 🢒 Chevrolet 🢒 2003 🢒 Avalanche - 2WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E/4L65-E 🢒 No Second Gear, No Fourth Gear, and No Reverse Gear

No Second Gear, No Fourth Gear, and No Reverse Gear for Chevrolet Avalanche - 2WD 2003

No Second Gear, No Fourth Gear and No Reverse Gear

Checks	Causes
Reaction Sun Shell (670)	Broken spline on reaction sun shell/replace shell.