GM Service Manual Online
For 1990-2009 cars only

7. 5/8, 8.6 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:

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