Chevrolet C Series 1999 — technical service bulletin
Bulletin 990730009 · NHTSA communication 606085 · issued Jun 1, 1999
Technical service bulletin
communication type
Power Train
component
1999
model years
8
vehicle entries
Official summary
Subject pertaining to harsh 1 - 2 and 3 - 2 shifts. *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.