GM Service Manual Online
For 1990-2009 cars only

8.6, 9.5, 10.5, 11.5 Inch Axles


Object Number: 599396  Size: SH

Rear axle identification information is stamped on the right side axle tube near the differential housing. The information includes the following:

    • Broadcast code (1)
    • Build Source (2)
    • Build date (3)-Julian date
    • Shift built (4)

In order to verify reports made on the rear axle assembly, include full code letters and build date numbers.