Chevrolet Avalanche 2002–2004 — technical service bulletin
Bulletin 030419001A · NHTSA communication 10004717 · issued Sep 1, 2004
Technical service bulletin
communication type
Power Train
component
2002–2004
model years
15
vehicle entries
Official summary
Use of synthetic front axle lubricant for 4wd vehicles sold in cold weather climates. *tt this bulletin replaced previous bulletin dated 10/01/2003. *tt
Vehicles covered
- 2002 Chevrolet Avalanche
- 2003 Chevrolet Avalanche
- 2004 Chevrolet Avalanche
- 2002 Chevrolet Silverado
- 2003 Chevrolet Silverado
- 2004 Chevrolet Silverado
- 2002 Chevrolet Suburban
- 2003 Chevrolet Suburban
- 2004 Chevrolet Suburban
- 2002 GMC Sierra
- 2003 GMC Sierra
- 2004 GMC Sierra
- 2002 GMC Yukon
- 2003 GMC Yukon
- 2004 GMC Yukon
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.