Restore Peak Performance to Your Cadillac CTS
Is your 2003-2004 Cadillac CTS suffering from frustrating engine problems? A faulty Engine Control Module (ECM) can be the hidden cause of issues like rough idling, stalling, poor fuel economy, and a persistent Check Engine Light. Don’t let a bad computer diminish the smooth, luxurious driving experience you expect from your Cadillac. This is your direct, hassle-free solution to get your car back on the road, running exactly as it should.
Common Symptoms of a Failing CTS ECM & Your Direct Solution
If you’re experiencing any of the following, a failing engine computer is the likely culprit. This unit is the definitive fix for these common problems:
- Unexpected stalling or cutting out while driving
- Complete no-start condition where the engine cranks but won’t fire
- Erratic engine performance, hesitation, or misfires
- Drastically reduced fuel efficiency
- Check Engine Light with communication-related Diagnostic Trouble Codes (DTCs) like P0601, P0602, P0605, or P0606
- Transmission shifting issues or other module communication errors
Our programmed 2003-2004 Cadillac CTS ECM arrives ready for installation, taking the guesswork and expensive dealership trips out of the equation.
Features & Tangible Benefits
- โ VIN-Specific Programming: We flash this module with the latest GM software updates using your car’s unique VIN. This ensures perfect compatibility and function right out of the box.
- โ True Plug-and-Play Installation: Because it’s pre-programmed, you can avoid the high costs and scheduling headaches of a dealership visit. Simply install the module and perform a simple security relearn procedure.
- โ Cost-Effective OEM Solution: You get the reliability and perfect fit of a genuine Original Equipment part without the new-part price tag. This unit is carefully inspected and sourced from a salvaged vehicle.
- โ Restored Drivability: By replacing your faulty ECM, you’ll restore the smooth acceleration, crisp shifting, and optimal fuel economy your Cadillac was designed to deliver.
- โ Guaranteed Compatibility: This module is a direct replacement for a wide range of part numbers, ensuring you get the correct component for your vehicle.
- โ This unit is backed by our one-year replacement warranty.
Expert Insight: The Elusive Electrical Gremlin
We recently worked with a customer whose ’04 CTS had an intermittent no-start issue that had stumped two different repair shops. They had already replaced the battery and starter to no avail. The real issue was the ECM intermittently failing to power the fuel pump relay. Once they installed our programmed 2003-2004 Cadillac CTS ECM, the problem was solved instantly. This isn’t just a part; it’s a diagnostic solution that saves you time, money, and immense frustration.
Guaranteed Fitment for These Part Numbers:
This ECM is a direct replacement for the following part numbers. Please verify that one of these numbers matches the module in your vehicle:
0261207310, 0261206487, 0261207711, 12581155, 12992506, 12992731, 12992732, 12992733, 12992734, 12992735, 12992736, 12992737, 12992738, 24402853, 24402854, 24402855, 24402857, 24402858, 24444019, 24444020, 24444022
Frequently Asked Questions
Do I need to do any programming or flashing myself?
Absolutely not. This is the core of our service. We program the ECM using the VIN you provide, so it arrives ready to be installed. It is a true plug-and-play solution.
Where do I provide my vehicle’s VIN?
After you complete your purchase, you can add your VIN to the ‘notes’ section of your order. If you forget, we will contact you via email to request it before we program and ship the module.
Is this a new part?
No, this is a high-quality, inspected, and tested used OEM part sourced from a salvaged vehicle. This allows us to provide a reliable, factory-spec part at an excellent value.
What is the security relearn procedure?
After installation, you may need to perform a simple security relearn. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating the cycle 2-3 times. This allows the new ECM to sync with your vehicle’s anti-theft system. Instructions will be included.
Where is the ECM located on a 2003-2004 Cadillac CTS?
The Engine Control Module is located in the engine compartment on the right-hand (passenger) side, typically housed in a protective case.
What if my part number isn’t on your list?
If your part number is not listed above, please contact us with the number from your original module. We will be happy to verify compatibility for you to ensure you receive the correct part.