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

Fluid - Transfer Case

Transfer Case DEXRON III ATF and Synthetic Gear Oil GM P/N 12378514

Note: Two types of lubricant are used within the transfer case: automatic transmission fluid for the three helical gear set and a unique hypoid gear oil for the bevel gears. Two oil seals, internal to the case separate the two types of fluid.