Avalanche, Sierra, Silverado, C&K Series, 1999-2005

Rear Drive Axle Identification

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1. Rear Axle Ratio

2. Build Source (C = Buffalo; K = Canada)

3. Julian Date

4. Shift Built (1 = First; 2 = Second)

All rear axles are identified by a broadcast code on the right axle tube near the carrier. The rear axle identification and manufacturer's codes must be known before attempting to adjust or to repair axle shafts or the rear axle case assembly. Rear axle ratio, differential type, manufacturer, and build date information is stamped on the right axle tube on the forward side.

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Fig. 1999-04 GM rear drive axle identification code



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Fig. 1999-04 Dana/Spicer rear axle carrier ID code

1. Dana® Part Number

2. Customer Part Number (Optional)

3. Julian Date Code

4. Line Set Number (Optional)

5. Last Six Digits of Vehicle Serial Number (Optional)

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Fig. 1999-04 Dana/Spicer rear axle ID

1. Dana® Part Number

2. Customer Part Number (Optional)

3. Model

4. Julian Date Code

5. Line Set Number (Optional)

6. Last Six Digits of Vehicle Serial Number (Optional)

 
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