Chevrolet C Series 1997–1998 — technical service bulletin
Bulletin 990604026 · NHTSA communication 607590 · issued Aug 1, 1999
Technical service bulletin
communication type
Engine and Engine Cooling
component
1997–1998
model years
4
vehicle entries
Official summary
Experiencing a squeak and rattle noise from engine compartment. *tt
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.