Chevrolet C Series 1999 — technical service bulletin
Bulletin 990604036 · NHTSA communication 608394 · issued Sep 1, 1999
Technical service bulletin
communication type
Vehicle Speed Control
component
1999
model years
8
vehicle entries
Official summary
Subject on various driveability concerns-ses or oil level lamp illuminates, spark knock, exhaust popping. *mjs
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.