Restore Peak Performance to Your GM Truck or SUV
Is your 2007 GMC Yukon or other GM vehicle running rough, stalling unexpectedly, or flashing a persistent check engine light? These are classic signs that the brain of your engine—the Engine Control Module (ECM)—is failing. As a technician with over two decades of experience under the hood, I’ve seen firsthand how a faulty ECM can cripple a perfectly good vehicle, causing endless frustration. This isn’t just a part; it’s the central command center for your engine’s fuel delivery, ignition timing, and emissions systems. When it falters, everything falters.
This replacement Engine Control Module, part number 12597121, is the reliable, straightforward solution you need. We take the guesswork and hassle out of the repair by pre-programming the module specifically for your vehicle using your VIN. This means it arrives at your door with the latest GM software updates already installed, ready for a simple, direct-fit installation. You can bypass the expensive trip to the dealership for programming and get your truck back to running the way it was designed to.
A Technician’s Notebook: The Intermittent No-Start Nightmare
I remember a 2007 Tahoe that came into the shop—same platform as the Yukon—with a problem that was driving the owner crazy. It would start fine for a week, then refuse to crank for two days. No rhyme or reason. The battery was good, the starter was new, but the diagnostic scanner kept showing intermittent communication loss with the ECM (U0100 codes). After hours of tracing wires, we swapped in a known-good, programmed ECM. The problem vanished instantly. The original module’s internal processor was failing under certain temperature conditions, a common issue I’ve seen on these E38 ECMs. This pre-programmed module is the exact fix for that kind of headache.
Is Your Vehicle Showing These Signs of ECM Failure?
A failing ECM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs attention:
- ✔ Unexplained Check Engine Light (CEL)
- ✔ Engine stalling or misfiring
- ✔ Vehicle refuses to start or has a hard starting condition
- ✔ Noticeable decrease in fuel economy
- ✔ Poor engine performance or hesitation during acceleration
- ✔ Transmission shifting issues or harsh shifts
- ✔ Communication error codes, such as U0100
- ✔ Internal module failure codes, like P0601 or P0606
A Straightforward Guide to Installation
One of the biggest benefits of this module is its simple installation. Because it’s pre-programmed, you won’t need any special scan tools. For a 2007 Yukon, the process is very accessible for a DIYer.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and secure it away from the post.
- Locate the ECM: On most 2007 GM trucks and SUVs like the Yukon and Tahoe, the ECM is located in the engine bay on the driver’s side, often under or near the battery tray.
- Disconnect the Connectors: Carefully unlatch and remove the electrical connectors from the old ECM. They have locking tabs, so be gentle to avoid damage.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. There are typically a few bolts holding it in place.
- Install the New Module: Mount your new, pre-programmed ECM onto the bracket and securely fasten the bolts.
- Reconnect Everything: Plug the electrical connectors firmly into the new module until they click into place. Reconnect your negative battery terminal.
- Final Step: Your vehicle may require a security relearn procedure, which can often be done without special tools by cycling the key. Your vehicle’s service manual will have the specific, simple steps.
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 and options:
AVALANCHE 1500 07: Electronic Control Module; (LH front under battery)
CORVETTE 06-07: Electronic Control Module; (RH engine compartment)
EQUINOX 07: Electronic Control Module; (LH engine compartment)
ESCALADE & ESV & EXT 07: Electronic Control Module; (LH front under battery)
G6 07: Electronic Control Module; (LH front engine compartment), 3.5L or 3.9L
G8 08: Electronic Control Module; 6.0L
HUMMER H2 07: Electronic Control Module; (LH front under battery), engine control
IMPALA 07: Electronic Control Module; (lower part of air cleaner box), 3.5L or 3.9L
MALIBU 07: Electronic Control Module; 3.5L or 3.9L
MONTE CARLO 07: Electronic Control Module; (lower part of air cleaner box), 3.5L or 3.9L
SIERRA 1500/2500/3500 PICKUP 07: New style (smooth door skin), (LH front under battery), see options
SIERRA DENALI 07: New style (smooth door skin), (LH front engine compartment)
SILVERADO 1500/2500/3500 PICKUP 07: New style (smooth door skin), (LH front under battery), see options
SUBURBAN 1500/2500 07: Electronic Control Module; (LH front under battery)
TAHOE 07: Electronic Control Module; (LH front under battery)
TORRENT 07: Electronic Control Module; (LH engine compartment)
YUKON & YUKON XL 1500/2500 07: Electronic Control Module; (LH front under battery)
Does this ECM require additional programming?
Does this ECM require additional programming?
No. We program the module with the latest GM software using the VIN you provide during checkout. It arrives ready for installation, saving you a trip to the dealer and expensive programming fees.
Where is the ECM located on my 2007 Yukon?
On the 2007 GMC Yukon, as well as most similar GM trucks and SUVs from that year, the Engine Control Module is typically found in the engine compartment on the driver’s side, mounted near or under the battery tray.
What information do I need to provide?
After you complete your purchase, you will need to provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). This ensures we can program the module with the exact software and calibrations for your specific vehicle configuration.
Will this fix my specific problem?
This module is a direct solution for a failed ECM. If your vehicle has been properly diagnosed with a faulty Engine Control Module (e.g., with codes like P0601, P0606, or U0100), then this part will resolve those issues. It is not a fix for other mechanical or electrical problems.