Restore Your Pontiac’s Brain and Get Back on the Road
Is your 2006 Pontiac Pursuit running rough, refusing to start, or flashing a persistent Check Engine Light? These frustrating issues often point to one critical component: the Engine Control Module (ECM). As an automotive technician with over two decades of experience, I’ve seen firsthand how a failing ECM can wreak havoc on a vehicle’s performance, causing everything from poor fuel mileage to unpredictable stalling. It’s the central computer of your car, and when it falters, the entire system suffers.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the hassle and high cost of dealership programming out of the equation. Before we ship, this ECM is professionally flashed with the latest official GM software updates, specifically matched to your vehicle using your VIN. This ensures that your 2006 Pursuit Engine Control Module communicates flawlessly with your engine, transmission, and all other onboard systems, restoring the smooth, reliable performance you depend on.
A Technician’s Notebook: The Intermittent Stall Case
I remember a 2006 Cobalt (which shares the same platform and ECM as the Pursuit) that came into the shop with a maddeningly intermittent stalling problem. The owner had replaced sensors and plugs, but the issue persisted. No codes were stored consistently. After hooking up a scope, we saw the 5-volt reference signal from the ECM intermittently dropping out, starving the sensors of power. The culprit was an internal failure in the original ECM. Installing a VIN-programmed module like this one didn’t just fix the stall; it improved throttle response and idle stability immediately. It was a textbook case of how a failing ECM can create phantom problems that are otherwise impossible to trace.
Is Your Pursuit Showing These Telltale Signs?
A faulty ECM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your engine’s computer needs attention:
- ✔ Persistent Check Engine Light (CEL) that won’t clear.
- ✔ Common diagnostic trouble codes (DTCs) like P0601, P0602, P0606, or U0100.
- ✔ Complete no-start or crank-no-start condition.
- ✔ Rough or unstable engine idle.
- ✔ Unexplained drop in fuel economy.
- ✔ Hesitation or stumbling during acceleration.
- ✔ Issues with automatic transmission shifting.
Your Straightforward ECM Installation Guide
Replacing your 2006 Pursuit Engine Control Module is a manageable job for a confident DIYer. Follow these steps for a successful installation:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes for the system capacitors to discharge.
- Locate the ECM: On the 2006 Pursuit, the ECM is typically found in the left-front of the engine compartment. It’s a metal box with large electrical connectors.
- Disconnect the Harnesses: Carefully release the locking tabs on the electrical connectors and pull them straight out from the module. Avoid pulling on the wires themselves.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the hardware, as you may need it for the new module.
- Install the New ECM: Mount the new, pre-programmed module in place and securely tighten the bolts. Reconnect the electrical harnesses, ensuring they click firmly into place.
- Reconnect the Battery: Reattach the negative battery terminal.
- Perform Security Relearn (If Needed): In some cases, you may need to perform a simple security relearn procedure. This typically involves turning the key to the ‘ON’ position for 10-15 minutes. Consult your owner’s manual for the specific procedure for your vehicle.
Verified Compatibility Across the GM Family
This versatile ECM, part number 19210737, is a direct replacement for a wide array of General Motors vehicles. It is fully interchangeable with service numbers 12590032, 12602044, 12603530, 12605843, 12607096, and 12630457. While this listing is for a 2006 Pursuit Engine Control Module, it also fits many other models like the Chevrolet Cobalt, HHR, Malibu; Pontiac G6; Saturn Ion, Vue; and dozens more. Please use our vehicle fitment tool or send us your VIN to confirm perfect compatibility.
Frequently Asked Questions
Do I need to do any programming after I receive it?
No! This module comes fully programmed to your vehicle’s specific VIN with the latest GM software. It is ready for installation right out of the box. In some cases, a simple key relearn procedure may be required, which does not need any special tools.
What information do you need from me?
After you complete your purchase, you must provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). We cannot program and ship the module without it.
Is this a reliable fix for my car’s issues?
Absolutely. A failing ECM is a common point of failure. Replacing it with a correctly programmed unit is often the definitive solution for a wide range of electronic and performance-related problems, saving you from endless diagnostic headaches.
What if my original part number is different?
That’s okay. This ECM is a direct replacement for several service numbers, including 12590032, 12602044, 12603530, and others listed. As long as your vehicle is on the compatibility list, this module will function correctly.