Chevrolet Sierra 2000–2001 — technical service bulletin
Bulletin 010100 · NHTSA communication 617475 · issued Jan 1, 2000
Technical service bulletin
communication type
Engine and Engine Cooling
component
2000–2001
model years
6
vehicle entries
Official summary
Some vehicles may exhibit heavy black smoke and loss of turbo boost power. *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.