Chevrolet C Series 1997–1999 — technical service bulletin
Bulletin 990731003 · NHTSA communication 606149 · issued Jul 1, 1999
Technical service bulletin
communication type
Power Train
component
1997–1999
model years
12
vehicle entries
Official summary
Customer may complain of noise from clutch housing, clutch may not engage, clutch disc hub cracked / broken. *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.