Restore Your Truck’s Core Performance
Is your 2004 GM truck or SUV suffering from frustrating issues like a persistent check engine light, rough idling, stalling, or erratic transmission shifting? These are classic signs of a failing Engine Control Module (ECM). Don’t let a faulty computer keep your reliable vehicle off the road. This professionally programmed ECM is the definitive solution to restore your engine’s performance, fuel efficiency, and dependability, getting you back to work and life without the headaches.
Common Symptoms & Your Direct Solution
A failing ECM can cause a wide range of problems that are often misdiagnosed. If you’re experiencing any of the following, this module is your answer:
- Persistent Check Engine Light (CEL)
- Diagnostic Trouble Codes (DTCs) like P0601, P0602, or P0606
- Poor or inconsistent engine performance
- Reduced fuel economy
- Harsh or delayed transmission shifting
- Engine stalling or difficulty starting
- Failure to pass emissions testing
This unit directly replaces the electronic brain of your vehicle, correcting these issues at their source. We use your vehicle’s VIN to flash the module with the latest GM-certified software updates, ensuring it operates exactly as the factory intended for your specific 2004 Avalanche 1500 ECM or other compatible model.
Features & Benefits
- âś” Plug & Play Installation: Arrives pre-programmed to your vehicle’s unique VIN. No additional programming or dealership visit is required.
- âś” Guaranteed Compatibility: Flashing to your VIN ensures all your vehicle’s systems and options are correctly recognized and controlled.
- âś” Updated Software: Programmed with the newest stable software from GM, which can resolve factory bugs and improve performance.
- âś” Direct Fit Replacement: Designed to replace a wide range of original service numbers, including 12586242, 19299226, YFKD, YHTN, and more.
- âś” Restored Functionality: Solves common drivability issues, restores fuel efficiency, and ensures smooth engine operation.
- âś” Dependable Coverage: This unit is backed by our one-year replacement warranty, giving you confidence in your repair.
An Expert’s Note on VIN Programming: Many people are tempted to grab a used computer from a salvage yard, but this often leads to more problems. A module from another truck, even an identical one, is programmed for that specific vehicle’s options—like gear ratios, tire size, and security system. Our VIN-specific programming is not just a convenience; it’s a critical step that ensures every component of your vehicle communicates correctly. This process prevents frustrating no-start conditions and drivability issues, making it the most reliable way to replace your 2004 Avalanche 1500 ECM.
Getting your truck back to peak condition is simple. After purchase, provide us with your VIN, and we’ll handle the complex programming. The module you receive will be ready for a straightforward installation, making this a job you can confidently handle yourself. This is the most effective and reliable way to fix your vehicle’s electronic issues and restore the performance you depend on. Don’t settle for a vehicle that doesn’t run right; get the correct, programmed part and drive with confidence again.
Frequently Asked Questions
Do I need to do anything after I install the ECM?
In most cases, this is a direct plug-and-play installation. However, some GM vehicles may require a simple security relearn procedure, which can be done without special tools and typically takes about 30 minutes. We can provide instructions for this process. A CASE (Crankshaft Angle Sensor Error) relearn may also be needed, which requires a capable scan tool.
How do I provide my VIN?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot program and ship your part without it.
Will this fit if my original part has a different service number?
Yes. This ECM is a direct replacement for multiple service numbers, including 12586242, 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, YFKX, YFXL, YFXM, YFXN, YFXP, and YHTN. As long as your vehicle is listed in the compatibility chart, we will program it to work perfectly.
Is this the correct part to fix my check engine light?
If your vehicle’s issues and diagnostic codes point to a faulty module, then this part is the solution. A proper diagnosis is key. This part will fix problems directly caused by the original ECM, such as internal circuit failure (e.g., code P0601). It will not fix issues caused by other faulty sensors or mechanical problems.
What information is programmed into the module?
Using your VIN, we program the module with all the vehicle-specific operational data, including engine and transmission calibration, anti-theft system information, gear ratios, tire size, and any other factory-installed options. This makes the new 2004 Avalanche 1500 ECM a true clone of the original in terms of function.