If your 2007 Yukon XL 2500 is suddenly stalling, running rough, or flashing a persistent check engine light, the problem often points directly to a failing Engine Control Module (ECM). As the ‘brain’ of your vehicle’s engine, a faulty ECM can cause a cascade of frustrating and hard-to-diagnose issues. I’ve seen it countless times in my 20+ years of diagnostics: good engines crippled by a failing computer. This isn’t just an inconvenience; it affects your vehicle’s reliability, fuel economy, and safety.
We offer a dependable and straightforward solution: a replacement Engine Control Module, part number 19210738, that arrives at your door fully programmed to your specific vehicle. Before we ship, we use your vehicle’s VIN to flash the module with the latest, most stable software updates from GM. This critical step ensures perfect compatibility and function, eliminating the need for an expensive trip to the dealership for programming. You get a part that’s ready to install right out of the box, restoring your engine’s performance and efficiency.
From the Diagnostic Bay: The Ghost in the Machine
A customer brought in his ’07 Sierra 2500, a sister truck to the Yukon XL, with a complaint that stumped two other shops. The truck would randomly lose power, the gauges would flicker, and it threw a network communication code (U0100). They had already replaced the battery and checked all the grounds. In the bay, everything tested fine. After letting it idle for an hour, the symptoms appeared. By monitoring the data stream, I saw the ECM was dropping offline intermittently. Heat soak was causing an internal failure. We installed one of these VIN-programmed modules, performed the security relearn, and the truck has been running perfectly ever since. It’s a classic case where the component itself is the root cause of seemingly unrelated electrical gremlins.
Is Your GM Vehicle Showing These Signs of ECM Failure?
A failing ECM can manifest in many ways. If you’re experiencing any of the following, this module is likely the solution you need:
- ✔ Check Engine Light is on with codes like P0601, P0602, or P0606 (Internal Control Module Processor Error).
- ✔ Intermittent or complete no-start condition where the engine cranks but won’t fire up.
- ✔ Unexplained drop in fuel economy and poor engine performance.
- ✔ Random stalling, rough idling, or engine hesitation.
- ✔ Communication errors with scan tools or other modules (U-codes).
- ✔ Automatic transmission shifting erratically or harshly.
A Straightforward Guide to Installation
For most of the compatible trucks and SUVs, the ECM is located under the battery on the driver’s side. This is a job a confident DIYer can handle in about an hour.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post.
- Access the Module: Remove the battery and the battery tray. This will expose the ECM and its mounting bracket.
- Disconnect the Harnesses: Carefully release the locking tabs on the electrical connectors and pull them straight out from the module. There are typically two or three large connectors. Do not force them.
- Remove the Old ECM: Unbolt the old ECM from its mounting bracket. Keep the hardware as you will reuse it.
- Install the New ECM: Mount your new, pre-programmed ECM onto the bracket and reconnect the electrical harnesses. You should hear a ‘click’ as they lock into place.
- Reassemble: Reinstall the battery tray and the battery. Reconnect the negative battery terminal.
- Perform Security Relearn: You will need to perform a simple key-on/key-off security relearn procedure to sync the new ECM with your vehicle’s anti-theft system. This procedure takes about 30 minutes and requires no special tools. We include instructions for this process.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 12589297, 12597121, 12603892, and 19210738. It is guaranteed to fit the following vehicles:
- ✔ 2007 Cadillac Escalade, Escalade ESV, Escalade EXT
- ✔ 2007 Chevrolet Avalanche 1500, Suburban 1500/2500, Tahoe
- ✔ 2007 Chevrolet Silverado 1500/2500/3500 (New Body Style, 6.0L or V8 w/o 4.3L)
- ✔ 2007 GMC Sierra 1500/2500/3500 & Denali (New Body Style, 6.0L or V8 w/o 4.3L)
- ✔ 2007 GMC Yukon, Yukon XL 1500, Yukon XL 2500
- ✔ 2007 Hummer H2
- ✔ 2006-2007 Chevrolet Corvette
- ✔ 2007 Chevrolet Impala & Monte Carlo (3.5L, 3.9L)
- ✔ 2007 Chevrolet Equinox & Pontiac Torrent
- ✔ 2007 Pontiac G6 (3.5L, 3.9L) & Saturn Aura (3.5L)
- ✔ 2008 Pontiac G8 (6.0L)
- ✔ 2007 Chevrolet Malibu (3.5L, 3.9L)
Frequently Asked Questions
Frequently Asked Questions
Do I need to do anything after installing this 2007 Yukon XL 2500 ECM?
Yes. While the main engine programming is done, you must perform a standard GM Security Relearn Procedure. This syncs the new ECM to your key and anti-theft system. We provide easy-to-follow instructions for this 30-minute process.
What is a VIN and why do you need it?
The VIN (Vehicle Identification Number) is your car’s unique 17-digit serial number. We use it to load the exact GM-specified software for your vehicle’s engine, transmission, and options, ensuring a perfect match.
Where is the ECM located on my 2007 Yukon XL 2500?
It is located in the engine compartment, on the driver’s side (LH), underneath the battery and battery tray.
Will this fix my check engine light?
If the check engine light is caused by an internal ECM failure (like codes P0601-P0606) or a fault the ECM is responsible for, then yes, this part will resolve the issue. Always ensure you have properly diagnosed the problem before ordering.
Is this a simple plug-and-play part?
Almost. It is ‘plug-in and program-synced’. The main programming is complete, but the final security relearn step is required on your end. This saves you from needing a dealership-level scan tool.