Chevrolet Chevrolet 1997–1998 — technical service bulletin
Bulletin 970901776520 · NHTSA communication 54342 · issued Sep 1, 1997
Technical service bulletin
communication type
Engine and Engine Cooling
component
1997–1998
model years
3
vehicle entries
Official summary
Experiencing an intermittent rough idle or misfire at idle after the engine is started. *yc
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.