Cadillac Deville 2004 — technical service bulletin
Bulletin 01566 · NHTSA communication 10005406 · issued Jan 1, 2004
Technical service bulletin
communication type
Engine and Engine Cooling
component
2004
model years
2
vehicle entries
Official summary
4.6 l37 ld8 engine tech 2 update to help diagnose a oil level light on. Sit bulletin 1411318. *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.