Operation CHARM: Car repair manuals for everyone.
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

Transmission

TRANSMISSION ID AND VIN DERIVATIVE LOCATION







4L60 E TRANSMISSION VIN DERIVATIVE LOCATION, M30
The 6-speed manual transmission, the Borg Warner Modified T-56 (RPO MM6), is stamped with a VIN derivative, which will be located in either the primary or secondary location, as shown. For additional information, refer to VIN Derivative.








AUTOMATIC TRANSMISSION DERIVATIVE OPTIONAL LOCATION
The 4-speed overdrive automatic transmission, the Hydra-Matic 4L60-E (RPO M30), has 2 identifying stampings or laser etchings:






Automatic Transmission Identification Number System:






4L60 E AUTOMATIC TRANSMISSION ID NUMBER LOCATION, M30
The transmission identification (ID) number indicates the transmission model type and when the unit was built. The transmission ID number is located on the bottom of the case just rear of the oil pan.







4L60 E AUTOMATIC TRANSMISSION VIN DERIVATIVE LOCATIONS, M30
A VIN derivative will be located in either the primary or secondary locations, or the optional locations as shown. For additional information, refer to VIN Derivative.