Chevrolet C Series 1999 — technical service bulletin
Bulletin 990730010A · NHTSA communication 607320 · issued Jun 1, 1999
Technical service bulletin
communication type
Power Train
component
1999
model years
8
vehicle entries
Official summary
A driveline vibration / growl noise. *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.