Chevrolet Kodiak 2004–2005 — technical service bulletin
Bulletin 3400 · NHTSA communication 10017129 · issued Oct 25, 2005
Technical service bulletin
communication type
Fuel System, Gasoline
component
2004–2005
model years
8
vehicle entries
Official summary
Rough idle, fuel knock or smoke while driving, combustion leak type noise, or a misfire. 6.6 lly injector knock, heavy smoke during warm up cycle. *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.