Chevrolet Sierra 1999–2001 — technical service bulletin
Bulletin 080101 · NHTSA communication 618163 · issued Jan 8, 2001
Technical service bulletin
communication type
Visibility
component
1999–2001
model years
12
vehicle entries
Official summary
Some customer may comment that the windows do not defrost on a timely basis. *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.