12587465 Cadillac Engine Computer Module ECM — 2002–2015 Seville, ATS, DeVille and Bonneville

Fits these vehicles

• 2013–2015 Cadillac ATS — Luxury · 2.5L
• 2003–2005 Cadillac DeVille — Base Hearse 4-Door, Base Limousine 4-Door, DHS, DTS, Protection Series · 4.6L
• 2002–2004 Cadillac Seville — SLS, STS · 4.6L
• 2004–2005 Pontiac Bonneville — GXP, SE, SLE · 3.8L / 4.6L

Compatibility from our listing. Check your VIN or part number before ordering — we’re happy to confirm.

Details

OEM part number

12587465

Condition

Used · OEM — Used, in good working condition.

Make / model

Cadillac / Seville · 2002–2004

Category

Electrical & modules

Weight

6 lb

Item #

254816784070

Description

What this part is

The engine computer (ECU / ECM) controls fuel injection, ignition timing and idle based on the engine sensors. Units are matched to the engine and, on many cars, to the key and immobilizer, so a replacement may need programming; match the part number before ordering.

Questions about this part

Does this electrical & modules fit my 2002–2004 Cadillac Seville?

Per our listing, it fits: 2013–2015 Cadillac ATS; 2003–2005 Cadillac DeVille; 2002–2004 Cadillac Seville; 2004–2005 Pontiac Bonneville. Match the OEM number 12587465 against your original part to be sure.

Is this part new or used?

It is a used original (OEM) part pulled from a real vehicle. Condition: Used, in good working condition.

How much is shipping and how fast does it ship?

Calculated by ZIP code — enter yours below or at checkout. Ships from Dallas–Fort Worth, Texas within 1–3 business days.

What is the price, and can I make an offer?

$118.95. Yes — use “Make an offer” to name your price; we reply by email.

What if the part doesn’t fit or arrives damaged?

Returns are accepted within 30 days, return shipping is on us, and there is no restocking fee. See the returns policy for details.