Is Your Uplander Running Rough? The Engine Control Module is the Brain of Your Vehicle.
If your 2006 Chevrolet Uplander is experiencing frustrating issues like a persistent check engine light, poor fuel economy, stalling, or a no-start condition, the problem often points to a failing Engine Control Module (ECM). The ECM is the central computer responsible for managing everything from fuel injection and ignition timing to emissions control and transmission shifting. When it fails, it can cause a cascade of problems that can be difficult to diagnose and leave you stranded.
This replacement Engine Control Module, service number 12602044, is the definitive solution to restore your vehicle’s performance and reliability. Unlike generic modules that require expensive trips to the dealership for programming, this unit arrives at your door fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). We load it with the latest official GM software updates, ensuring optimal performance, fuel efficiency, and emissions compliance right out of the box.
From the Diagnostic Bay
We had a 2008 Chevy Impala come in with a bizarre, intermittent stalling problem. It would run perfectly for days, then suddenly die at a stoplight and refuse to restart for an hour. No consistent codes were stored, just a few random communication errors. After hours of chasing wires and checking sensors, we focused on the ECM. On a hunch, we checked the main ground wire for the module. It was tight, but there was hidden corrosion under the terminal. This weak ground was causing voltage drops that would randomly crash the computer. Replacing the terminal and the damaged ECM fixed it for good. It’s a great reminder: when installing a new module, always clean and inspect your main power and ground connections!
Common Symptoms of a Failing ECM
- ✔ Persistent Check Engine Light (CEL) on your dashboard.
- ✔ Engine stalling, stuttering, or misfiring unexpectedly.
- ✔ Noticeable decrease in fuel economy.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Loss of power and poor acceleration.
- ✔ Communication errors with diagnostic scan tools.
The Simple Solution: A Pre-Programmed 2006 Uplander ECM
Don’t let a faulty computer keep your vehicle off the road. The process is simple: place your order, provide us with your VIN, and we handle the complex programming. This saves you hundreds of dollars in dealership fees and hours of vehicle downtime. This module is a direct-fit replacement for a wide variety of GM vehicles and is interchangeable with multiple service numbers, including 12590032, 12602044, 12603530, 12605843, 12607096, 12630457, and 19210737. Once it arrives, installation is straightforward. In most cases, you will only need to perform a simple security relearn procedure (often called a ‘key relearn’), which can be done without any special tools. Restore your vehicle’s brainpower and driving confidence today.
Frequently Asked Questions
Do I need to get this ECM programmed by a dealer?
No. This is the biggest benefit of our service. We program the Engine Control Module with the latest GM software using the VIN you provide before we ship it. It arrives ready for installation.
How do I provide my vehicle’s VIN?
After you complete your purchase, we will contact you for your VIN. You can also add it as a note during checkout to speed up the process. We cannot ship the module until we have programmed it to your specific vehicle.
Is installation difficult? Will it be plug-and-play?
The physical installation is very simple, involving disconnecting the battery, unplugging the old module, and plugging in the new one. After installation, you will likely need to perform a security relearn procedure, which pairs the new ECM to your vehicle’s anti-theft system. This procedure typically takes 10-30 minutes and does not require special tools. Instructions can be easily found online for your specific model.
My original part number isn’t 12602044, but it’s on the interchange list. Will this work?
Yes. GM often updates part numbers over time. The service numbers listed (12590032, 12603530, 12605843, etc.) are all interchangeable with this unit. As long as your vehicle is on the fitment list and you provide the correct VIN, this module will function perfectly.
Can a bad ECM cause transmission problems?
Absolutely. The ECM works in constant communication with the Transmission Control Module (TCM). A faulty ECM can send incorrect data, leading to poor shifting, hesitation, or the transmission going into a ‘limp mode’. Replacing a bad ECM often resolves these related transmission symptoms.