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.