Chevrolet Silverado 1999–2004 — technical service bulletin
Bulletin 040523005 · NHTSA communication 10012141 · issued Jun 1, 2004
Technical service bulletin
communication type
Service Brakes, Hydraulic
component
1999–2004
model years
12
vehicle entries
Official summary
Availability of rear wheel mud flaps to reduce debris build-up on rear brake calipers and/or rear wheels. *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.