GM Service Manual Online
For 1990-2009 cars only

Object Number: 1898124  Size: SH
(1)Code for Automatic Transmission
(2)Model Year
(3)Model for Transmission
(4)Transmission Family
(5)Source Code for Plant
(6)Calender Year
(7)Julian Date
(8)Shift/Line (A/B)
(9)Numeric sequence starting at 0001 @ 12:01 AM each day

Source Code for Plant

    â€¢ 4 - Ramos Arizpe, Mexico
    â€¢ H - Ypsilanti, Michigan
    â€¢ J - Windsor, Ontario
    â€¢ S - Strasbourg, France
    â€¢ W - Warren, Michigan
    â€¢ Y - Toledo, Ohio
    â€¢ R - Boryeong, Korea
    â€¢ M - Yan Tai, Shan Dong, China
    â€¢ P - San Luis Potosi, Mexico