Chevrolet Silverado 2004–2005 — technical service bulletin

Bulletin 0509610018 · NHTSA communication 10017533 · issued Jun 1, 2005

Technical service bulletin

communication type

Engine and Engine Cooling

component

2004–2005

model years

vehicle entries

Official summary

Accessory drive belt chirp, squeal, or squeak type noise at cold idle. *tt

Vehicles covered

2004 Chevrolet Silverado
2005 Chevrolet Silverado
2004 GMC Sierra
2005 GMC Sierra

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.