Axle Identification - Front

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Front Axle Identification Stamp

Courtesy of GENERAL MOTORS CORP.

Front axle identification information is stamped on the top of the differential carrier assembly. The information includes the following:

Broadcast code (1)
Supplier code (2)
Date built (3)
Shift built (4) (Optional for 8.25" and 9.25" axles)
Hour built (5)

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