GM Service Manual Online
For 1990-2009 cars only

Sealers, Adhesives, and Lubricants

Application

Type of Material

Part Number

Backup Lamp Switch

Sealant

21019581

Case Halves

Sealant

12378516

Differential Ring Gear Bolt

Threadlocker

21005994

Drain Plugs

Sealant

21485278

Input Shaft Bolt

Threadlocker

21005994

Intermediate Shaft Bolt

Threadlocker

21005994

Output Shaft Bolt

Threadlocker

21005994

Rear Cover

Sealant

21019581

Reverse Lockout Lever Bolt

Threadlocker

21485277

Shifter Cover

Sealant

12378516

Shifter Guide Bolt

Sealant

21485278

Dexron VI® Transmission Fluid

Lubricant

US P/N 88861003 (Canadian P/N 88861004)

Vehicle Speed Sensor Bolt

Threadlocker

21485277