Is Your GM Truck or SUV Experiencing Critical Performance Issues?
If your 2003-2007 Hummer H2, Silverado, Sierra, or other compatible GM vehicle is suffering from erratic behavior like stalling, poor fuel economy, harsh transmission shifts, or an illuminated Check Engine Light, a failing Powertrain Control Module (PCM) is a likely culprit. As the central computer for your engine and transmission, the PCM’s health is paramount to your vehicle’s performance and reliability. When it begins to fail, it can cause a cascade of frustrating and potentially damaging problems. Don’t let a faulty computer keep your powerful truck off the road. This direct-fit replacement PCM is the definitive solution to restore your vehicle’s factory performance.
The Plug-and-Play Solution: Pre-Programmed for Your Vehicle
The biggest hurdle in replacing a modern vehicle’s computer is the complex and expensive programming required at a dealership. We eliminate that step entirely. When you order this PCM, we will flash it with the latest official GM software updates, specifically calibrated to your vehicle’s unique Vehicle Identification Number (VIN). This ensures that once you receive the part, it’s ready for installation right out of the box. This saves you time, hundreds of dollars in dealer fees, and the headache of towing your vehicle to a service center. Simply provide your VIN after purchase, and we handle the rest.
Common Symptoms of a Failing Hummer H2 PCM
- ✔ Persistent Check Engine Light (CEL) with communication-related codes (e.g., U-codes) or multiple random sensor codes.
- ✔ Engine stalling unexpectedly or refusing to start, even with a good battery and starter.
- ✔ Rough or unstable idling, making the vehicle shake or feel like it’s about to shut off.
- ✔ Noticeable decrease in fuel efficiency for no apparent reason.
- ✔ Harsh, delayed, or erratic automatic transmission shifting.
- ✔ Loss of power and sluggish acceleration.
- ✔ Inconsistent or non-functional gauges on the instrument cluster.
Guaranteed Compatibility and Reliability
This Powertrain Control Module is a direct replacement for a wide range of popular GM trucks and SUVs from 2003 to 2007. It is compatible with multiple service numbers, including 89017750, 12582605, 12589463, 12602802, 89017734, and 28042802. Each unit undergoes rigorous testing to ensure it meets or exceeds OEM specifications for durability and performance. By installing this module, you are restoring the core logic of your vehicle’s powertrain, ensuring all components work in harmony as the manufacturer intended.
Wide-Ranging Fitment Across the GM Lineup:
This module is engineered to fit a vast array of vehicles, including but not limited to:
- HUMMER H2: 2003, 2004, 2005, 2006, 2007
- Cadillac Escalade, ESV, EXT: 2003-2006
- Chevrolet Avalanche 1500: 2003-2006
- Chevrolet Silverado 1500, 2500, 3500: 2003-2007 (Classic Body Style)
- Chevrolet Suburban 1500, 2500: 2003-2006
- Chevrolet Tahoe: 2003-2006
- GMC Sierra 1500, 2500, 3500: 2003-2007 (Classic Body Style)
- GMC Yukon, Yukon XL 1500, Yukon XL 2500: 2003-2006
- And more, including select Envoy XL, Trailblazer EXT, Isuzu Ascender, and SSR models.
Please verify your vehicle’s compatibility using the detailed fitment list and match your existing part number to ensure a perfect fit.
Frequently Asked Questions
Do I need to program this PCM?
No. We handle all the programming for you before shipment. Simply provide us with your vehicle’s VIN during the checkout process or via message, and it will arrive ready to install with the latest GM software for your specific vehicle.
Where is the PCM located on my 2005 Hummer H2?
On most compatible GM trucks and SUVs, including the Hummer H2, the PCM is located in the engine bay on the driver’s side, typically under the battery tray.
Will I need to perform a security or CASE relearn procedure?
After installation, you may need to perform a security relearn (Passlock) for the vehicle to start, which can often be done without special tools. A Crankshaft Variation (CASE) relearn may also be necessary to clear certain codes and ensure optimal engine timing. A capable scan tool is typically required for the CASE relearn.
How do I provide my VIN number?
After you complete your purchase, you can add your VIN to the order notes or send us a direct message with the information. We cannot ship your part until we receive the VIN for programming.
Is this part a guaranteed fix for my vehicle’s issues?
This PCM will resolve any issues directly caused by a faulty module. However, it’s crucial to ensure your vehicle has been properly diagnosed, as other components like sensors or wiring can cause similar symptoms. This part is a reliable solution for a confirmed PCM failure.