Restore Your Truck’s Dependability
Is your Escalade, Silverado, or Tahoe running rough, stalling, or displaying a persistent Check Engine Light? A faulty Powertrain Control Module (PCM) is often the root cause of these frustrating and debilitating issues. This critical component is the brain of your engine and transmission, and when it fails, it can disrupt everything from fuel economy to shifting. Get back on the road with confidence with this professionally programmed PCM, designed to restore your vehicle’s original performance and reliability.
Common Symptoms & Your Solution
If you’re experiencing any of the following problems, a failing PCM is the likely culprit. This unit is the definitive solution for:
- Persistent Check Engine Light (CEL)
- Error codes related to the module itself (e.g., P0601, P0602, P0605, P0606)
- Poor or erratic automatic transmission shifting
- Sudden stalling or intermittent starting issues
- Noticeable drop in fuel efficiency
- Communication problems with diagnostic scan tools
Features & Benefits
- ✔ VIN-Specific Programming: We flash this module with the latest GM software updates using your vehicle’s specific VIN. This ensures perfect compatibility with your engine, transmission, and factory options, eliminating conflicts that cause performance issues.
- ✔ Plug & Play Installation: This unit arrives ready to be installed. Once you perform a simple security relearn procedure (instructions available online), your vehicle will be back up and running without a trip to the dealership for expensive programming.
- ✔ Cost-Effective Repair: Save hundreds of dollars compared to sourcing and programming a new module from a dealership. This is the smart, economical choice for getting your trusted truck or SUV back in top condition.
- ✔ Direct-Fit Replacement: Engineered to be a direct replacement for a wide range of original service numbers, including 12589463, ensuring a seamless fit and proper connection.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight: The Dreaded P0601 Code
As a technician, one of the most definitive trouble codes is P0601: “Internal Control Module Memory Check Sum Error.” This code means the PCM’s internal, self-checking process has failed. It’s not a sensor or wiring issue; it’s a fatal flaw within the computer itself. There is no repair for this—the only solution is to replace the module. Our Programmed PCM for 2003-2006 Escalade EXT is the perfect remedy, arriving with fresh, stable software to permanently resolve this and other internal module faults.
Guaranteed Fitment
This module is a direct replacement for the following service numbers: 89017750, 12582605, 12589463, 12602802, 89017734, 28042802 and is compatible with a wide range of GM trucks and SUVs. Please verify your vehicle is on the list below.
Frequently Asked Questions
Do I need to do anything after installing this PCM?
Yes. While the unit is programmed for your vehicle’s engine and transmission, you will need to perform a simple security relearn procedure, also known as a VATS relearn. This syncs the new PCM with your vehicle’s anti-theft system and keys. The procedure takes about 30 minutes and can be done without any special tools.
How do I provide my VIN?
After you complete your purchase, you can add your 17-digit VIN to the notes section of your order. If you forget, we will contact you via email to request it. We cannot ship your part until we have your VIN to program it correctly.
Will this fix my transmission shifting problems?
The PCM controls both engine and transmission functions. If your shifting issues, such as hard shifts or delayed engagement, are caused by a faulty module, then this replacement part will resolve them. It restores the correct communication and commands between the engine and transmission.
What if my original part number is not 12589463?
This module is a direct replacement for several service numbers, including 89017750, 12582605, 12602802, and others listed. As long as your vehicle model and year are on our compatibility list, this PCM will function correctly as a replacement, even if the number on your original part is different.
Is this a simple DIY job?
For someone with basic mechanical skills, this is a very manageable job. The PCM is typically located in the engine bay (often under the battery tray or near the airbox) and is held in place by a few bolts. The main steps are disconnecting the battery, unplugging the electrical harnesses, swapping the module, and then performing the security relearn.