Cadillac CTS 2003 — technical service bulletin
Bulletin 051603 · NHTSA communication 10003649 · issued May 16, 2003
Technical service bulletin
communication type
Engine and Engine Cooling
component
2003
model years
1
vehicle entries
Official summary
Cold start rough idle or misfire on vehicles with a manual transmission if an engine block heater is inappropriately installed. *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.