GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Chevrolet
🢒
2007
🢒
Chevrolet W-Series Commercial W4 (W3500/W4500)
🢒
Transmission/Transaxle
🢒
Automatic Transmission - 4L80-E/4L85-E
🢒 Torque Converter Clutch Slipping
Slipping TCC
Checks
Cause
TCC Valve Release Exhaust Orificed Cup Plug
Blocked
Turbine Shaft Seal
Cut
