12596146 Cadillac V8 4.6 Engine Computer Module ECM — 2004–2009 STS and SRX

Fits these vehicles

• 2004–2009 Cadillac SRX — Confort, Elegance, Lujo · 3.6L / 4.6L
• 2005–2009 Cadillac STS — Elegance, Platinum, V · 3.6L / 4.4L / 4.6L

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

Details

OEM part number

12596146

Condition

Used · OEM — Used, in good working condition.

Make / model

Cadillac / STS · 2004–2007

Category

Electrical & modules

Weight

5 lb

Item #

126290010112

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 2004–2007 Cadillac STS?

Per our listing, it fits: 2004–2009 Cadillac SRX; 2005–2009 Cadillac STS. Match the OEM number 12596146 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?

$148.95. 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.