Restore Peak Performance to Your Cadillac
Are you experiencing frustrating engine issues with your 2000-2002 Cadillac Eldorado, Seville, or DeVille? Symptoms like a persistent check engine light, erratic engine behavior, stalling, or a complete no-start condition often point to a failing Powertrain Control Module (PCM). The PCM is the central computer of your vehicle, responsible for managing everything from fuel injection and ignition timing to transmission shifting. When it fails, the entire vehicle’s performance and reliability are compromised. This replacement Powertrain Control Module, part number 12573503, is the definitive solution to get your vehicle running smoothly again.
From the Diagnostic Bay
We had a 2001 Cadillac Seville towed in that had stumped two other shops. The car would crank but never start, and the owner had already replaced the fuel pump and crank sensor. After connecting our scan tool, we noticed a U1000 code – loss of communication with the ECM. Instead of throwing more parts at it, we checked the power and grounds at the module connectors, which were perfect. This told us the module itself was the likely culprit. We installed a correctly programmed PCM, performed the security relearn, and the Northstar V8 fired up on the first try. A faulty computer can mimic a dozen other mechanical failures, making proper diagnosis key.
Is a Failing 2000-2002 Eldorado PCM Your Problem?
A failing engine computer can manifest in various ways, often mimicking other component failures. Before you spend hundreds on sensors or fuel system parts, check if your vehicle is exhibiting these common PCM failure symptoms. This module is the correct fix for these issues.
Common Symptoms of a Faulty GM PCM
- ✔ Check Engine Light: Your check engine light is illuminated with communication-related codes (U-codes) or various performance codes that don’t resolve with sensor replacement.
- ✔ No-Start or Stalling: The engine cranks but won’t start, or it stalls intermittently while driving, especially when warm.
- ✔ Poor Engine Performance: Noticeable loss of power, hesitation on acceleration, and decreased fuel economy.
- ✔ Harsh or Erratic Shifting: The transmission may shift harshly, get stuck in a gear, or shift at the wrong times, as the PCM also controls transmission functions.
- ✔ Failed Emissions Test: Inability to pass an emissions test due to module-related fault codes or monitor readiness issues.
- ✔ Intermittent Electrical Issues: Gauges behaving erratically or other seemingly unrelated electrical problems can sometimes be traced back to a faulty computer.
A True Plug-and-Play Solution
This isn’t a generic, one-size-fits-all part from a salvage yard. We take the guesswork out of the repair. When you purchase this module, we will flash it with the latest official GM software calibration specifically for your vehicle. All you need to do is provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN) after checkout. This critical step ensures that the module communicates perfectly with your car’s engine, transmission, and security system, just like the original unit from the factory. Once installed, a simple security relearn procedure may be required, which can typically be done without special tools.
Guaranteed Compatibility
This Electronic Control Module is a direct replacement for several service numbers, ensuring a perfect match for your vehicle. It is compatible with the following part numbers:
- 12573503
- 12562481
- 12571591
- 12573650
Vehicle Fitment:
- Cadillac DeVille: 2000, 2001, 2002, 2003 (Located in LH engine compartment)
- Cadillac Eldorado: 2000, 2001, 2002 (Located in LH engine compartment)
- Cadillac Seville: 2000, 2001, 2002, 2003 (Located in LH engine compartment)
- Oldsmobile Aurora: 2001, 2002 (4.0L V8, Located in LH engine compartment)
- Oldsmobile Aurora: 2003 (Located in LH engine compartment)
- Chevrolet SSR: 2006 (Located next to air box, ID 12573503)
Frequently Asked Questions
What is a PCM and what does it do?
The Powertrain Control Module (PCM), also known as the Engine Control Module (ECM), is your vehicle’s main computer. It controls all aspects of engine and transmission operation, including fuel mixture, spark timing, and shift points, to ensure optimal performance, fuel economy, and emissions.
Is this module ready to install right out of the box?
Yes, it comes programmed to your specific VIN. However, like any PCM replacement on these GM vehicles, you will need to perform a security relearn procedure (often called Passlock or Passkey relearn) so the module recognizes your vehicle’s keys. This procedure typically takes 10-30 minutes and does not require a scan tool.
Where is the PCM located on my 2001 Cadillac Eldorado?
On the 2000-2002 Eldorado, as well as the DeVille and Seville of the same era, the PCM is located in the engine compartment on the driver’s side (LH side), typically under a plastic cover near the firewall or shock tower.
How do I provide my VIN for programming?
After you complete your purchase, simply send us a message with your 17-digit VIN. We cannot ship your order until we receive this information, as the programming is essential for the part to function in your vehicle.
Will this fix my car’s specific problem?
This module will resolve any issue directly caused by a faulty PCM. While the symptoms listed are common for PCM failure, it’s always recommended to have a proper diagnosis performed. This part will not fix underlying mechanical issues, faulty wiring, or failed sensors.