GM Service Manual Online
For 1990-2009 cars only

Application

Type of Material

GM Part Number

Differential Pinion Shaft Locking Screw

Threadlock

Loctite® 242 or equivalent

Rear Drive Axle

Lubricant

89021671 or SAE 80W-90 GL5

Pinion Yoke (Inside Sealing Surface)

Sealant

12346004 or equivalent

Pinion Yoke (Outside Sealing Surface)

Lubricant

12377985 or equivalent

Pinion Flange Seal Lip

Lubricant

12377985 or equivalent