Chevrolet S10 2003–2004 — technical service bulletin
Bulletin 040604006 · NHTSA communication 10012672 · issued Feb 1, 2004
Technical service bulletin
communication type
Engine and Engine Cooling
component
2003–2004
model years
4
vehicle entries
Official summary
Rush buzz hiss type noise heard in passenger compartment. *eh
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.