Chevrolet Silverado 2001–2002 — technical service bulletin
Bulletin 170602 · NHTSA communication 637231 · issued Jun 17, 2002
Technical service bulletin
communication type
Engine and Engine Cooling
component
2001–2002
model years
4
vehicle entries
Official summary
Some 4.3 liter engine equipped vehicles may exhibit a rough running condition with possible diagnostic trouble code p0300 set. *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.