Chevrolet Avalanche 2001–2003 — technical service bulletin

Bulletin 030601011 · NHTSA communication 10001292 · issued Mar 1, 2003

Technical service bulletin

communication type

Engine and Engine Cooling

component

2001–2003

model years

vehicle entries

Official summary

Accessory drive belt whine. *tt

Vehicles covered

2002 Chevrolet Avalanche
2003 Chevrolet Avalanche
2001 Chevrolet Silverado
2002 Chevrolet Silverado
2003 Chevrolet Silverado
2001 Chevrolet Suburban
2002 Chevrolet Suburban
2003 Chevrolet Suburban
2001 GMC Sierra
2002 GMC Sierra
2003 GMC Sierra
2001 GMC Yukon
2002 GMC Yukon
2003 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.