Is Your Truck or SUV Plagued by Frustrating Engine Problems?
There’s nothing more stressful than a vehicle you can’t rely on. If your 2004 GM truck or SUV is experiencing erratic behavior, poor performance, or won’t start at all, a failing Powertrain Control Module (PCM) is often the culprit. This isn’t just an inconvenience; it affects your vehicle’s core performance, fuel economy, and overall dependability. This pre-programmed engine computer is the definitive solution to get your trusted vehicle back on the road, running exactly as it should.
Common Symptoms & Your Solution
A failing PCM can manifest in numerous ways, leaving you guessing at the root cause. If you’re noticing any of the following issues, this module is designed to be your direct-fit fix:
- Persistent Check Engine Light (CEL)
- Engine stalling, misfiring, or running rough
- Harsh or incorrect automatic transmission shifting
- Reduced fuel economy
- No-start conditions where the engine cranks but won’t fire
- Communication errors with diagnostic scan tools
This replacement 2004 Avalanche 1500 PCM arrives programmed to your vehicle’s specific VIN, ensuring it integrates seamlessly with your existing systems and restores factory-level performance and reliability.
Features & Real-World Benefits
- โ VIN-Programmed for Your Vehicle: No need for an expensive trip to the dealership. This unit arrives ready for installation, saving you time and money.
- โ Loaded with Latest GM Updates: We flash the module with the most current GM software, ensuring optimal engine performance, transmission shifting, and fuel efficiency.
- โ Direct-Fit Replacement: Guaranteed to fit and function correctly for all service numbers listed, including 12586242, YFKH, YFKD, and more.
- โ Restores Dependability: Eliminate the guesswork and frustrating electrical issues caused by a faulty computer. Get your truck or SUV running smoothly again.
- โ Backed by Our Guarantee: This unit is backed by our one-year replacement warranty, giving you confidence in your purchase.
Expert Insight: The Brain of Your Operation
As a technician, I’ve seen firsthand how a faulty PCM can wreak havoc on these otherwise bulletproof GM platforms. This module is more than just a box; it’s the central command center for your vehicle. It controls everything from the precise amount of fuel each injector delivers to when your transmission shifts gears. When it fails, you get a cascade of problems that can mimic other component failures. By installing a properly programmed 2004 Avalanche 1500 PCM, you’re not just replacing a part; you’re restoring the vehicle’s entire operational logic, ensuring all systems work in harmony as the engineers intended.
Frequently Asked Questions
How do I provide my vehicle’s VIN?
After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). We will provide clear instructions on how to do this. We cannot program and ship your module without it.
Is any additional programming required after installation?
In most cases, no. This module is sent programmed and ready for installation. However, some vehicles may require a security relearn procedure (often called a CASE relearn or anti-theft relearn), which can typically be done without special tools. Instructions are widely available online for this simple procedure.
How can I be sure this is the right part for my vehicle?
Please match your original module’s service number to one of the numbers listed in our description (e.g., 12586242, YFKH). While this 2004 Avalanche 1500 PCM fits many models, confirming the service number is the best way to guarantee compatibility.
What if my original service number isn’t listed?
If your service number is not on the list, this module may not be the correct one for your vehicle. Please contact us with your vehicle’s VIN and original part number, and we will be happy to assist you in finding the correct part.
What does the one-year replacement warranty cover?
The warranty covers the module for one year from the date of purchase. If the unit fails within this period due to a manufacturing defect, we will provide a replacement. It does not cover issues caused by improper installation or other failing parts on the vehicle.