12581144 by GM Engine Control Module 2004-2007 Cadillac CTS, SRX Skip to content
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12581144 | Genuine GM Engine Control Module 2004-2007 Cadillac CTS, SRX

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  • Product SKU: 12581144
  • Availability: In Stock
Original price $389.00 - Original price $389.00
Original price
$389.00
$389.00 - $389.00
Current price $389.00
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Description: Engine Control Module For 2004-2007 Cadillac CTS, SRX
Condition: New
Brand: GM®
Part Number: 12581144

Fitment 12581144:

Year Make Model Engine Important vehicle option details
2004-2007 Cadillac CTS 6 Cyl 2.8L, 6 Cyl 3.6L 4 DOOR, 4 DOOR RHD, 4 DOOR(RHD), V 4 DOOR
2004-2006 Cadillac SRX 6 Cyl 3.6L 4 DOOR, SRX, V8 4 DOOR


An Engine Control Module (ECM) 12581144 - also called an Engine Control Unit (ECU) - is the main computer that controls how an engine runs.

1. Control engine operation

The ECM controls:

  • Fuel injection (how much fuel, when)

  • Air intake (throttle, turbo boost, EGR)

  • Ignition timing (gas engines)

This keeps the engine running smoothly under all conditions.

2. Improve fuel efficiency

  • Adjusts fuel delivery based on engine load and speed

  • Prevents wasting fuel

  • Helps get the best possible mileage

3. Reduce emissions

  • Manages emissions systems (EGR, catalytic converter, DPF)

  • Keeps exhaust gases within legal limits

  • Helps meet environmental regulations

4. Protect the engine

  • Monitors temperatures, pressures, and speeds

  • Prevents overheating, knocking, or over-boost

  • Can reduce power (limp mode) to avoid damage

5. Adapt to driving conditions

  • Adjusts engine behavior for:

    • Cold starts

    • Heavy loads

    • High altitude

    • Hot or cold weather

6. Diagnose problems

  • Detects faults using sensors

  • Stores trouble codes

  • Turns on the Check Engine Light

  • Helps technicians diagnose issues quickly

 


Signs of a Failing Control Module 12581144:

1. Check Engine Light stays on

  • Light is on with no clear mechanical cause

  • Comes back immediately after clearing codes

  • Multiple unrelated fault codes appear at once

2. Poor engine performance

  • Loss of power

  • Hesitation or surging

  • Rough idle

  • Engine may go into limp mode

3. Hard starting or no start

  • Engine cranks but won’t start

  • Starts sometimes, other times won’t

  • ECM not properly controlling fuel or spark

4. Stalling or random shutdowns

  • Engine stalls while driving

  • Cuts out unexpectedly

  • Often restarts after cooling down

5. Electrical problems

  • Sensors test good but show bad readings

  • Fuel injectors or coils not firing correctly

  • Cooling fans, EGR, or turbo controls acting erratically

6. Communication issues

  • Scan tool can’t communicate with ECM

  • U-codes (network/communication errors)

  • Vehicle fails emissions or inspection

7. Engine running too rich or too lean

  • Black smoke (rich)

  • Poor fuel economy

  • Misfires without mechanical cause

8. Burnt smell or visible ECM damage (rare but serious)

  • Smell of burnt electronics

  • Water or corrosion inside ECM

  • Usually caused by voltage spikes or water intrusion

 


Common ABS Control Module Error Codes 12581144:

 
  • P0600 – ECM/PCM communication error

  • P0601 – ECM memory checksum error

  • P0602 – ECM programming error

  • P0603 – ECM keep-alive memory error

  • P0604 – ECM RAM error

  • P0605 – ECM ROM error

  • P0606 – ECM processor fault

  • P0607 – ECM performance fault



Manufacturer information

The Mopar Part Corporation is one of the largest customer care and repair service companies in the world. Why? Because it's the official parts, service, and customer care division of Fiat Chrysler, one of the largest manufactures of automobiles in the world.
Since Mopar is tied so tightly together with Fiat Chrysler, the brand can easily make use of Chrysler's long-standing reputation when it comes to the manufacturing of high-quality pieces, parts, and hardware for automobiles, heavy-duty trucks, and just about everything in between. That being said, Mopar doesn't need to lean on Chrysler for its own success.
The Mopar brand is trusted by hundreds of thousands of truckers, repairpeople, and technicians the world over — and for good reason. The brand is just as versatile as you can expect from Chrysler and also makes countless essential original equipment manufacturer (OEM) products for Chrysler's many brands.

Warranty
First Truck Parts offers a 365-days warranty for all types of parts and in any condition. The warranty applies only to buyers who have placed an order on our website.

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