Chevrolet Silverado 1999–2001 — technical service bulletin
Bulletin 020605003A · NHTSA communication 10001274 · issued Mar 1, 2003
Technical service bulletin
communication type
Engine and Engine Cooling
component
1999–2001
model years
6
vehicle entries
Official summary
Exhaust moan/vibration. *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.