Get Your Truck Back on the Road, Fast.
Is your 2004 Chevy Avalanche or GM truck running rough, stalling, or refusing to start? A failing Powertrain Control Module (PCM) is often the culprit, leaving you stranded and frustrated. This isn’t just an inconvenience; it’s a major disruption to your work and family life. We provide the definitive, hassle-free solution: a genuine GM engine computer, professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN) before it ever leaves our facility. This ensures your truck runs exactly as the manufacturer intended, restoring the power and reliability you depend on.
Common Symptoms & Your Solution
If you’re experiencing any of the following issues, a faulty PCM is the likely cause. This unit is the correct fix for intermittent or persistent problems such as:
- Check Engine Light (CEL) that won’t go away
- Engine stalling, sputtering, or misfiring
- Complete no-start condition
- Poor fuel economy
- Harsh or incorrect transmission shifting
- Communication error codes (like U0100) or internal processor failure codes (P0601, P0606)
Replacing your failing module with our pre-programmed 2004 Avalanche 1500 engine computer is the most effective way to permanently resolve these issues and restore your vehicle’s performance.
Expert Insight: The Critical Role of VIN Programming
Many people are tempted to grab a used computer from a salvage yard, but this often leads to more problems. GM vehicles of this era use a sophisticated anti-theft system (like Passlock/VATS) that is tied directly to the PCM and the vehicle’s VIN. A mismatched computer will prevent the engine from starting. Our process eliminates this problem entirely. By programming the unit with your VIN and the latest GM software updates, we ensure it communicates seamlessly with all other modules in your truck, just like the original. It’s a true plug-and-drive solution that saves you a costly trip to the dealership for programming.
Features & Tangible Benefits
- ✔ VIN-Programmed for Your Vehicle: No extra programming needed. Just install the unit, perform the simple key relearn procedure, and you’re ready to go.
- ✔ Loaded with Latest GM Updates: We flash the module with the most current factory software, which often corrects drivability issues the original software had.
- ✔ Direct OEM Replacement: Guaranteed to fit and function perfectly, matching service number 12586242 and many others.
- ✔ Restored Performance & Efficiency: Get back the smooth idle, crisp throttle response, and proper fuel economy your truck was built for.
- ✔ This unit is backed by our one-year replacement warranty.: Drive with confidence knowing your purchase is protected.
This PCM is a direct fit for a wide range of 2004 GM models, including the Sierra, Silverado, Suburban, Tahoe, Yukon, Escalade, Envoy, and more. Please verify your service number (found on the module’s sticker) against our compatible list: 12586242, 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, YFKX, YFXL, YFXM, YFXN, YFXP, or YHTN to ensure a perfect match for your 2004 Avalanche 1500 engine computer or other compatible vehicle.
Frequently Asked Questions
How do I provide my VIN number?
After you complete your purchase, simply send us a message with your 17-digit VIN. We cannot ship your order until we receive this information, as the programming is specific to your vehicle.
Will I need to have this programmed by a dealer?
No. This is the biggest benefit of our service. We program the engine computer to your VIN before shipping, so it’s ready for installation right out of the box. You will not need to visit a dealer or mechanic for programming.
Do I need to perform a security relearn procedure?
Yes, on most GM vehicles of this era, you will need to perform a simple security relearn procedure after installation. This process takes about 30 minutes and involves turning the key on and off in a specific sequence. We include easy-to-follow instructions to guide you through it.
Is this a brand new part?
This is a genuine, tested OEM part that has been meticulously inspected and prepared for service. It is programmed with the newest software available from GM to ensure optimal performance and longevity.
What if my original part number isn’t on your list?
Please contact us with your vehicle’s VIN and the service number from your original computer. We can verify compatibility and ensure you receive the correct part for your specific truck or SUV.