Chevrolet Silverado 2001–2002 — technical service bulletin
Bulletin 20040146 · NHTSA communication 10007862 · issued May 24, 2004
Technical service bulletin
communication type
Electrical System
component
2001–2002
model years
4
vehicle entries
Official summary
Some customers may have experience vehicle service engine soon (ses) light illumination, low engine power, hard start, and/or fuel in crankcase, requiring injector replacement, as a result of high fuel return rates due to fuel injector body cracks or ball seat erosion. *mj
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.