Chevrolet C Series 1997 — technical service bulletin
Bulletin 98776526 · NHTSA communication 600284 · issued Feb 1, 1998
Technical service bulletin
communication type
Vehicle Speed Control
component
1997
model years
6
vehicle entries
Official summary
Vehicles with 6.5l diesel engines (vins s, f - rpos l56, l65, l65-cmt) may experience white smoke, rough idle, poor throttle response on cold start. *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.