Chevrolet Silverado 1999 — technical service bulletin
Bulletin 99009 · NHTSA communication 604888 · issued Apr 1, 1999
Technical service bulletin
communication type
Engine and Engine Cooling
component
1999
model years
2
vehicle entries
Official summary
Voluntary emission campaign involving vehicles with a misbuilt exhaust gas recirculation valve. *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.