Buick Regal 2004 — technical service bulletin
Bulletin 01670 · NHTSA communication 10007245 · issued Jan 1, 2004
Technical service bulletin
communication type
Power Train
component
2004
model years
3
vehicle entries
Official summary
Incorrect pcm (powertrain control module) part number setting dtc (diagnostic trouble code) p0135. *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.