Transmission ID and VIN Derivative Location

Transmission ID and VIN Derivative Location

Manual Transmission

Borg Warner Modified T-56 Transmission VIN Derivative Location, M30(c):

(1) VIN Derivative, Primary Location
(2) VIN Derivative, Secondary Location

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.

Automatic Transmission

4L60-E Automatic Transmission ID Number Location, M30(c):

(1) Automatic Transmission ID Number Location

The 4-speed overdrive automatic transmission, the Hydra-Matic 4L60-E (RPO M30), has two identification stampings or laser etchings:

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.

Automatic Transmission Identification Number System:

4L60-E Automatic Transmission VIN Derivative Location, M30(c):

(1) VIN Derivative, Primary Location
(2) VIN Derivative, Secondary Location
(3) VIN Derivative, Optional Location
(4) VIN Derivative, Optional Location

A VIN derivative will be located in either the primary or secondary locations, or the optional locations as shown.