Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

System Specifications

REAR AXLE FLUID

WITH AUTOMATIC TRANSMISSION
Rear Differential Fluid 75W-90 (GM Part No. U.S. 89021677, in Canada 89021678).

WITH MANUAL TRANSMISSION
Rear Differential Fluid 75W-90 Limited Slip (GM Part No. U.S. 89021677 and Friction Modifier 1052358, in Canada 89021678 and Friction Modifier 992694).