GM Service Manual Online
For 1990-2009 cars only

Checks

Actions

Worn Shift Fork

Replace the shift fork.

Worn Synchronizer Sleeve or Gear

Replace the sleeve or gear.

Worn Bearings on Input Shaft or Counter Shaft

Replace the bearing.

Weakened or Damaged Location Spring

Replace the spring.

Loose or Damaged Synchronizer Spring

Replace the synchronizer spring.

Excessive Back-Lash of Gear

Adjust the back-lash of gear.