Chevrolet Silverado 2001–2004 — technical service bulletin
Bulletin 01499 · NHTSA communication 10005481 · issued Jan 1, 2004
Technical service bulletin
communication type
Engine and Engine Cooling
component
2001–2004
model years
8
vehicle entries
Official summary
2004 6.6l duramax lb7 engines with extended crank during hot engine restart. Diagnostic trouble code (dtc) p0193 may or may not be set. Sit bulletin 1402202. *tt
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.