GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC K Sierra - 4WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L80-E 🢒 Third Gear Starts

Checks

Cause

Forward Clutch Components

  • Driving Hub (615)

Plugged holes

  • Plates (610, 611)

Seized

Direct Clutch Components

  • Piston (619)

Jammed

  • Spring Assembly (607)

Jammed

  • Lube Feed Hole

Blocked