Chevrolet Silverado 2003 — technical service bulletin
Bulletin 00411B · NHTSA communication 10004112 · issued Jan 1, 2004
Technical service bulletin
communication type
Engine and Engine Cooling
component
2003
model years
5
vehicle entries
Official summary
Lack of power with tac module code of p1518 reduced power mode. *tt *mj
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.