GM Service Manual Online
For 1990-2009 cars only

A Transmission ID Tag and a VIN Derivative stamp is located on the transmission case.

4L60-E Automatic Transmission


Object Number: 661681  Size: SH

The 4L60-E transmission ID and VIN derivative location (1).

4L80-E Automatic Transmission


Object Number: 661676  Size: SH

Transmission ID and VIN derivative locations (1, 2). The right hand stamping is shown, left hand is opposite. Pin or hand stamp location (3) for the transmission ID or VIN derivative.

5 SPD Getrag


Object Number: 661679  Size: SH

Vehicle identification number location PIN stamp only (1). Vehicle identification number location optional PIN or Hand Stamp (2). Vehicle identification number location optional Pin stamp only (3).

5 SPD Manual Transmission


Object Number: 661677  Size: SH

The transmission vehicle identification number location PIN or hand stamp (1, 3). Vehicle identification number location PIN or hand stamp (2).

Allison Transmission


Object Number: 661674  Size: SH

Vehicle identification number location for PIN stamp (3). Optional hand stamp locations (1, 2, 4)

ZF Transmission


Object Number: 668763  Size: SH

Engine identification tag location (1).