Chevrolet Silverado 2001–2004 — technical service bulletin
Bulletin 01242A · NHTSA communication 10006284 · issued Jan 1, 2004
Technical service bulletin
communication type
Engine and Engine Cooling
component
2001–2004
model years
8
vehicle entries
Official summary
6.6l lb7 lly diesel engine drive belt chirping on shut down. Sit bulletin 1460352. *tt
Vehicles covered
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.