Restore Peak Performance to Your GMC Workhorse
Is your 2004 GMC Yukon XL 2500 showing signs of fatigue? Hesitation, rough idling, erratic shifting, or a persistent Check Engine Light can turn your reliable SUV into a source of constant frustration. These are classic symptoms of a failing Powertrain Control Module (PCM), the central computer responsible for managing your engine and transmission. This replacement PCM is the definitive solution to restore your vehicle’s performance, efficiency, and dependability, getting you back on the road with confidence.
Common Symptoms & Your Solution
A failing PCM can cause a wide range of confusing issues. If you’re experiencing any of the following, this module is the component you need to get your vehicle running right:
- Persistent Check Engine Light (CEL)
- Diagnostic Trouble Codes (DTCs) related to engine, transmission, or communication errors
- Poor fuel economy
- Engine stalling, stumbling, or misfiring
- Harsh or delayed automatic transmission shifting
- Failure to pass emissions testing
- No-start or hard-start conditions
By replacing your old unit with this pre-programmed 2004 Yukon XL 2500 PCM 89017739, you are directly addressing the root cause of these problems, not just masking the symptoms.
Features & Benefits
- โ VIN-Specific Programming: We flash this module with the latest GM software updates using your vehicle’s specific VIN. This ensures perfect compatibility and function right out of the box.
- โ Plug & Play Installation: Because it’s programmed for your exact vehicle, installation is straightforward. In most cases, a simple security relearn procedure is all that’s needed, saving you a costly trip to the dealership.
- โ Restored Drivability: Experience smoother engine operation, more responsive acceleration, and crisp, correct transmission shifts.
- โ Improved Efficiency: A properly functioning PCM ensures the optimal air-fuel mixture, helping to restore your vehicle’s original fuel economy.
- โ Comprehensive Compatibility: This module, part number 89017739, is a direct replacement for a wide range of 2004 GM trucks, vans, and SUVs, ensuring a perfect fit and function.
- โ This unit is backed by our one-year replacement warranty.
An Expert’s Note on GM Transmissions
As a technician, I’ve seen countless 2004-era GM trucks and SUVs with transmission complaints that weren’t mechanical at all. The 4L60E and 4L80E transmissions in these vehicles are heavily reliant on precise electronic signals from the PCM. When the module’s internal drivers begin to fail, it can cause erratic line pressure and faulty shift solenoid commands, leading to harsh shifts or slipping. Often, owners spend hundreds or even thousands on transmission work when the real culprit was the computer. Installing a correctly programmed 2004 Yukon XL 2500 PCM 89017739 is often the key to solving these phantom transmission issues for good.
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 cannot program and ship the module without it. Instructions will be provided in your order confirmation email.
Will I need to do anything after I install this PCM?
In most GM vehicles of this era, you will need to perform a security relearn procedure (often called a CASE relearn or anti-theft relearn). This process syncs the new PCM to your vehicle’s ignition and security system. It’s a simple procedure that typically takes 10-30 minutes and does not require special tools. We can provide instructions for this process.
Is this a brand new part?
This is a high-quality, tested, and fully functional replacement component that has been meticulously inspected to meet or exceed original equipment specifications. It is programmed with the latest software to ensure optimal performance.
What is the difference between an ECM, PCM, and ECU?
The terms are often used interchangeably. ECM (Engine Control Module) typically controls only engine functions. PCM (Powertrain Control Module) controls both the engine and the automatic transmission. ECU (Electronic Control Unit) is a more generic term. For your vehicle, PCM is the most accurate term.
Will this module fix my specific problem?
This PCM will correct issues directly caused by a faulty module. While it resolves the vast majority of the symptoms listed above, we always recommend a thorough diagnosis by a qualified mechanic to ensure you are purchasing the correct part for your vehicle’s specific issue.