Chevrolet Silverado 2001–2004 — technical service bulletin
Bulletin 00764B · NHTSA communication 10007271 · issued Jan 1, 2004
Technical service bulletin
communication type
Engine and Engine Cooling
component
2001–2004
model years
8
vehicle entries
Official summary
6.6l diesel engine rough idle, clatter, stall and/or diagnostic trouble code (dtc) p1223. *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.