Programmed 2007-2009 Envoy Engine Module ECM 12590032 – VIN Matched

Restore Peak Performance to Your GM Vehicle

Is your 2007-2009 GMC Envoy or other GM vehicle suffering from baffling electrical gremlins? A faulty Engine Control Module (ECM) is often the culprit behind a host of frustrating and performance-robbing issues. As the ‘brain’ of your vehicle’s engine management system, its proper function is critical for everything from starting the engine to managing fuel economy and transmission shifting. When it fails, it can feel like the vehicle has a mind of its own. This replacement ECM, part number 12590032, is the definitive solution to restore your vehicle’s reliability and drivability.

We take the guesswork and high cost out of the repair process. Unlike a generic module from a parts store, this unit comes fully programmed with the latest official GM software updates, tailored specifically to your vehicle’s VIN. This means no expensive trip to the dealership for flashing, no special scan tools required—just a straightforward installation to get you back on the road. This is the smart, efficient fix for both professional technicians and dedicated DIYers.

Is Your Vehicle Showing These Telltale Signs?

A failing ECM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your engine computer needs attention:

• ✔ Check Engine Light is on with codes like P0601, P0606, or U0100.
• ✔ The engine cranks but refuses to start.
• ✔ Intermittent stalling or rough idling for no apparent reason.
• ✔ Noticeable decrease in fuel efficiency.
• ✔ Harsh or erratic automatic transmission shifting.
• ✔ Misfires or a general lack of engine power.
• ✔ Issues with other electronic systems, like anti-theft or gauges.

Your Straightforward Installation Guide

Installing your pre-programmed 2007-2009 Envoy Engine Module is a manageable job for a DIYer with basic tools. While specific locations vary slightly by model, the general process is consistent.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent any accidental reconnection.
2. Locate the ECM: On the GMC Envoy, the ECM is typically found on the driver’s side of the engine bay, mounted to the inner fender or near the firewall.
3. Disconnect the Harnesses: Carefully release the locking tabs on the electrical connectors and pull them straight out from the module. Never force them. Inspect the connectors for any corrosion or damage.
4. Remove the Old Module: Unbolt the old ECM from its mounting bracket. There are usually two or three bolts holding it in place.
5. Install the New Module: Mount your new, pre-programmed ECM onto the bracket and secure the bolts.
6. Reconnect Everything: Firmly plug the electrical harnesses back into the new module until they click into place. Reconnect the negative battery terminal.
7. Final Step: In many cases, you may need to perform a simple security relearn procedure, which typically involves turning the key to the ‘ON’ position for 10-15 minutes. Consult your vehicle’s service information for specific steps.

Verified Compatibility for Your Vehicle

This module is a direct replacement for service number 12590032 and is also interchangeable with 12602044, 12603530, 12605843, 12607096, 12630457, and 19210737. Please confirm your vehicle is on the list below for guaranteed compatibility.

Frequently Asked Questions

Why do you need my VIN?
Your Vehicle Identification Number (VIN) is essential for us to program the module with the exact software and calibrations your specific vehicle requires from GM. This ensures perfect compatibility with your engine, transmission, and factory options.

Is this a difficult part to install myself?
For most DIYers with basic hand tools, this is a very manageable job. The module is typically easy to access in the engine bay. Our step-by-step guide above outlines the process. The key benefit is that the programming is already done for you.

Will this fix my Check Engine Light?
If the Check Engine Light is caused by an internal failure of the ECM (common codes P0601, P0606), then yes, this part is the correct fix. It’s always best to have the codes read with a scanner to confirm the diagnosis before ordering.

What does “interchangeable” mean for part numbers?
It means that GM used several different service part numbers over the years for the same physical computer. Our module is a direct, compatible replacement for all the service numbers listed, including 12590032, 12607096, and others.

Do I need to do anything after installation?
After installing the module and reconnecting the battery, you will likely need to perform a simple security relearn procedure. This allows the new ECM to sync with your vehicle’s anti-theft system. This procedure does not require special tools and can be found online or in your vehicle’s service manual.