Restore Peak Performance to Your GM Truck or SUV
Is your 2004 Cadillac Escalade, Sierra, or Tahoe suffering from frustrating and unpredictable electrical issues? A faulty Powertrain Control Module (PCM) can manifest as a check engine light that won’t go away, poor fuel economy, erratic shifting, or even a no-start condition that leaves you stranded. This isn’t just an inconvenience; it’s a compromise in your vehicle’s reliability and your peace of mind. It’s time to stop guessing and install a definitive solution that gets your vehicle running strong again.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a failing PCM is the likely culprit:
- Check Engine Light (CEL) with communication error codes (e.g., P0601, P0606)
- Vehicle refuses to start or stalls intermittently
- Harsh or delayed automatic transmission shifting
- Noticeable drop in fuel efficiency
- Failure to pass emissions testing
- Apparent loss of engine power and throttle response
This pre-programmed engine computer is the direct, reliable fix for these issues. We take a quality, tested unit matching service number 12586242 and flash it with the latest GM-certified software updates, specifically calibrated to your vehicle’s unique Vehicle Identification Number (VIN). This ensures that when you receive your 2004 Escalade PCM 12586242, it’s ready for a straightforward installation, restoring the precise control and performance your vehicle had when it left the factory.
Features & Benefits
- โ Plug & Play Installation: Arrives fully programmed to your vehicle’s VIN. No expensive trips to the dealership for programming are required.
- โ Updated GM Software: We load the most current software from General Motors, which often resolves issues the original programming had.
- โ Guaranteed Compatibility: A perfect match for a wide range of 2004 GM trucks and SUVs with service numbers like 12586242, YFXN, YFXL, YHTN, and more.
- โ Restores Original Function: Eliminates error codes and drivability problems, allowing your engine and transmission to operate in perfect harmony.
- โ This unit is backed by our one-year replacement warranty.
Expert Insight: The Critical Role of VIN Programming
Many people don’t realize that on these 2004 GM vehicles, the PCM is the central hub for more than just the engine. It communicates with the transmission, the anti-lock brakes, and, crucially, the anti-theft system (VATS/Passlock). Simply swapping a module from another vehicle will result in a no-start condition due to a security mismatch. By programming your specific VIN before we ship, we ensure all factory-installed options are recognized and the security system syncs correctly after a simple relearn procedure. This attention to detail is what separates a quick fix from a lasting, reliable repair, and it’s why our 2004 Escalade PCM 12586242 is the trusted choice for professionals and DIYers alike.
Frequently Asked Questions
Do I need to do any programming after I install it?
No. The unit arrives fully programmed to your vehicle’s VIN. You will only need to perform a simple security relearn procedure, which involves turning the key on for 10 minutes, off for 10 seconds, and repeating this three times. This takes about 30 minutes and requires no special tools.
How do I provide my vehicle’s VIN?
After you complete your purchase, we will send you an email requesting your VIN. You can also add it to the ‘notes’ section during checkout. We cannot ship your part until we receive the VIN.
Is this the correct PCM for my truck/SUV?
This PCM is compatible with vehicles that have any of the following service numbers on their original computer: 12586242, 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, YFKX, YFXL, YFXM, YFXN, YFXP, or YHTN. Please check the sticker on your current module to confirm a match.
What if my original part number is not on the list?
If your part number is not listed, please contact us with your vehicle’s year, make, model, and the service number from your original computer. We will be happy to verify compatibility or find the correct part for you.
What does the one-year replacement warranty cover?
Our warranty covers any defects in the module itself for a period of one year from the date of purchase. If the unit fails, we will provide a replacement part. The warranty does not cover issues caused by other faulty components on the vehicle.