Restore Your Vehicle’s Brain, Restore Your Drive
Is your Cadillac, Chevrolet SSR, or Oldsmobile suffering from an illuminated Check Engine Light, erratic shifting, a frustrating no-start condition, or poor fuel economy? These are classic signs of a failing Engine Control Module (PCM), the central computer of your vehicle. Don’t let a faulty module keep you off the road. This is the definitive, plug-and-play solution to restore your vehicleโs factory performance and your driving confidence. We provide a professionally prepared and programmed 12573503 PCM, flashed with the latest official GM software updates specifically for your car using your Vehicle Identification Number (VIN).
Common Symptoms of a Failing PCM & Your Solution
A failing PCM can cause a cascade of confusing issues. If you’re experiencing any of the following, this module is your solution:
- Persistent Check Engine Light (CEL): Often with communication-related Diagnostic Trouble Codes (DTCs) like P0601, P0602, P0605, or P0606.
- Engine Performance Problems: Stalling, rough idling, hesitation during acceleration, or a noticeable loss of power.
- Transmission Issues: Harsh or delayed shifting, or getting stuck in a single gear (limp mode).
- No-Start or Intermittent Starting: The engine cranks but refuses to start, or starts unreliably.
- Network Communication Errors: Your mechanic’s scan tool is unable to communicate with the PCM.
This professionally programmed 12573503 PCM directly addresses these problems by replacing the faulty hardware and software with a reliable, fully updated unit tailored to your exact vehicle specifications.
Features & Benefits
- โ VIN-Programmed for Your Specific Vehicle: No complicated trips to the dealer for expensive programming. This unit arrives ready to install, ensuring a perfect software match for your car’s engine, transmission, and options.
- โ Loaded with the Latest GM Software Updates: Benefit from improved drivability, corrected factory bugs, and optimized fuel efficiency that older, original modules may lack.
- โ Direct-Fit OEM Component: Guarantees a perfect physical fit and seamless connection with your vehicle’s existing wiring harness and mounting points for a hassle-free installation.
- โ Rigorously Tested for Reliability: Each module undergoes a comprehensive series of checks to ensure it meets or exceeds original factory standards for performance and long-term durability.
- โ Backed by our one-year replacement warranty.: Drive with complete peace of mind knowing your purchase is protected. We stand behind our products with a solid one-year replacement warranty.
An Expert’s Note on VIN Programming: From our 20+ years of diagnostic experience, we’ve seen countless issues arise from using generic, non-programmed modules. A PCM isn’t just another part; it’s the brain of your vehicle, managing everything from fuel injection timing to anti-theft protocols. Our meticulous VIN-programming process ensures that this ‘brain’ is perfectly tailored to your car’s unique identity. This is the critical difference between a temporary fix and a lasting, reliable repair that restores your vehicle to its original glory.
Frequently Asked Questions
Do I need to do any additional programming after installation?
No. This programmed 12573503 PCM arrives ready to install. However, you will need to perform a simple security relearn procedure, which can be done without any special tools. This syncs the new module to your vehicle’s anti-theft system. Instructions are readily available online or we can provide guidance.
Where do I provide my vehicle’s VIN?
After you complete your purchase, please send us your 17-digit VIN through the messaging system or include it in the ‘notes to seller’ section during checkout. We cannot ship your part until we receive this information.
Is this a new part?
This is a genuine OEM module that has been professionally inspected, tested, and prepared with the latest GM software for your specific vehicle. It is guaranteed to function to original factory specifications.
What if my original part number is different?
This module is a direct replacement for several service numbers, including 12562481, 12571591, 12573503, and 12573650. As long as your vehicle is listed in the compatibility chart, this unit will function correctly once programmed to your VIN.
How do I perform the security relearn?
For most compatible GM vehicles, the procedure is simple: 1. Turn the key to the ‘ON’ position (without starting the engine) for 10 minutes. The security light should turn off. 2. Turn the key to ‘OFF’ for 10 seconds. 3. Repeat steps 1 and 2 two more times for a total of 3 cycles. After the third cycle, the vehicle should start and run normally.