GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 GMC C Sierra - 2WD 🢒 Transmission/Transaxle 🢒 Automatic Transmission - Allison 🢒 Transmission Identification Information
Figure 1:

Nameplate Location
Object Number: 670837 Size: MF
(1)Nameplate
Figure 2:

Nameplate Components with Ten Group Spaces
Object Number: 670878 Size: SF
(1)Model (Series)
(2)Engineering Group Number
(3)Transmission Identification Number
(4)Engineering Feature Configuration Number
(5)Serial Number
(6)Date of Manufacture
Figure 3:

Nameplate Components with Twelve Group Spaces
Object Number: 721044 Size: SF
(1)Model (Series)
(2)Date of Manufacture
(3)Engineering Feature Configuration Number
(4)Transmission Identification Number
(5)Engineering Group Number
(6)Serial Number