Is Your GM Truck or SUV Running Rough?
If you’re dealing with frustrating issues like a rough idle, sudden stalling, a no-start condition, or a check engine light that won’t go away, a failing Powertrain Control Module (PCM) is often the culprit. This component is the brain of your vehicle, and when it starts to fail, it can cause a cascade of confusing problems. Stop chasing phantom sensor codes and get the definitive solution to restore your vehicle’s performance and reliability. This is the correct, pre-programmed computer you need to get back on the road with confidence.
Common Symptoms of a Failing PCM & Your Direct-Fit Solution
A faulty engine computer can mimic many other issues, making diagnosis a headache. If you’re experiencing any of the following, this module is your solution:
- Unexplained Check Engine Light (CEL) with various codes
- Engine stalling or cutting out while driving
- Harsh or erratic transmission shifting
- Complete no-start or intermittent starting problems
- Poor fuel economy and loss of power
- Communication error codes (U-codes) with scanners
This programmed 12589463 PCM is engineered to be a direct-fit replacement, solving these issues by restoring the critical link between your vehicle’s engine, transmission, and sensor network.
Features & Benefits: The Right Part, Ready to Install
- ✔ VIN-Specific Programming: We flash the module with your vehicle’s unique VIN and the latest GM software updates before it ships. This ensures perfect compatibility and function right out of the box.
- ✔ Plug-and-Play Installation: Because the programming is done for you, you can avoid a costly and time-consuming trip to the dealership. Simply install the unit and perform the security relearn procedure.
- ✔ Restored Performance: Get your truck’s engine and transmission operating exactly as the manufacturer intended, restoring lost power, smooth shifting, and proper fuel efficiency.
- ✔ Broad GM Compatibility: This module is a direct replacement for multiple service numbers, including 89017750, 12582605, 12602802, and more, across a wide range of popular GM trucks and SUVs.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
Expert Insight: The Dealer-Free Advantage
As a technician, one of the biggest hurdles in replacing a PCM used to be the final step: programming. You could install the physical part, but the vehicle was still a paperweight until it was towed to a dealer for expensive flashing. Our process eliminates that entire step. By providing us with your VIN, you receive a fully prepared, programmed 12589463 PCM that is ready to integrate with your vehicle’s systems upon installation. This saves you hundreds of dollars in dealer fees and days of vehicle downtime, turning a complex electronic repair into a manageable DIY or independent shop job.
Frequently Asked Questions
How do I provide my VIN number?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). You can typically add it as a note during checkout or reply to your order confirmation email. We cannot program and ship the module without your VIN.
Is this part truly ‘plug and play’?
Yes, for the most part. The module comes fully programmed for your engine and transmission. However, like any PCM replacement on these GM vehicles, you will need to perform a security relearn procedure (often called a VATS relearn) to sync the new PCM with your vehicle’s anti-theft system. This procedure is simple, requires no special tools, and instructions can be easily found online.
Will I need to have a CASE relearn performed?
A Crankshaft Variation Relearn (CASE) is recommended for optimal performance and to prevent a P1336 trouble code. While the vehicle will run without it, this procedure requires a professional-grade scan tool. Most local repair shops can perform this service for you quickly after you have installed the new PCM.
How can I be sure this fits my vehicle?
This module replaces multiple service numbers, including 12589463, 12602802, and 89017750. Please check the extensive compatibility list on this page. The most important step is providing us with your VIN, as we will use it to verify the exact calibration needed for your specific make, model, and options.
What is covered by the warranty?
This unit is backed by our one-year replacement warranty. This covers any defects in the module itself. If the unit fails within one year of the purchase date, we will provide a replacement part.