Restore Peak Performance to Your GMC Acadia
If you’re dealing with frustrating and unpredictable issues in your 2007 or 2008 GMC Acadia—like stalling, poor fuel economy, a persistent check engine light, or a complete no-start condition—a failing Engine Control Module (ECM) is often the culprit. As the brain of your vehicle’s engine, a faulty ECM can create a cascade of problems that are difficult to diagnose. I’ve spent over two decades in the shop, and I’ve seen how a bad ECM can mimic a dozen other component failures, costing owners time and money on unnecessary parts. This is your reliable, direct-fit solution.
This isn’t just a replacement part; it’s a complete fix. We take the hassle out of the repair by pre-programming this module to your vehicle’s specific Vehicle Identification Number (VIN). This means it arrives at your door loaded with the latest GM factory software updates, ready for installation. You get to skip the expensive trip to the dealership for programming, saving you hundreds of dollars and significant downtime. This is the same process we use in our own repair facility to get customers back on the road quickly and confidently.
A Technician’s Notebook: The Intermittent Gremlin
A customer brought in a 2008 Acadia with a problem that was driving them crazy: it would randomly lose power and the dash would light up like a Christmas tree, but after a few minutes, it would restart and run fine for days. They had already replaced the battery and alternator. After checking for solid power and ground at the ECM connectors, my scan tool kept losing communication with the module during a wiggle test of the main harness. It wasn’t the wiring; the ECM’s internal processor was failing under thermal stress. We installed a VIN-programmed module just like this one, and the vehicle has been running flawlessly ever since. These intermittent issues are classic signs of a failing 2007-2008 Acadia ECM.
Is Your Acadia Showing These Symptoms?
A failing ECM can manifest in many ways. If you’re experiencing any of the following, it’s a strong indicator that your engine computer needs replacement:
- ✔ Check Engine Light is on with communication-related codes (e.g., U0100) or internal processor fault codes (e.g., P0601, P0606).
- ✔ Engine cranks but refuses to start.
- ✔ Unexplained drop in fuel mileage.
- ✔ Rough idling, stalling, or hesitation during acceleration.
- ✔ Transmission shifting issues or erratic behavior.
- ✔ Misfire codes that persist even after replacing spark plugs and coils.
- ✔ Seeming failure of multiple sensors at once.
A Straightforward Guide to Installation
Installing your new 2007-2008 Acadia ECM is a manageable job for a DIY enthusiast. The ECM is typically located behind the cooling fan shroud. Following these steps will ensure a smooth process.
- 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 Module: On the 2007-2008 Acadia, the ECM is mounted to the rear of the radiator cooling fan assembly. You may need to remove the upper radiator sight shield for better access.
- Disconnect the Wiring: Carefully release the locking tabs on the electrical connectors and pull them straight out from the module. Never pull on the wires themselves. Inspect the connectors for any corrosion or damage.
- Remove the Old ECM: Unbolt the old module from its mounting bracket. It’s typically held in place by a few small bolts.
- Install the New ECM: Mount your new, pre-programmed ECM in place and tighten the bolts securely.
- Reconnect Everything: Plug the electrical connectors firmly into the new module until they click into place. Reconnect the negative battery terminal.
- Final Steps: Your vehicle may require a security relearn procedure or an idle relearn, which can often be completed by cycling the key or letting the vehicle idle for a few minutes. Consult your owner’s manual for specific instructions.
Verified Vehicle Compatibility
This Engine Control Module is a direct replacement for part number 12607096 and is interchangeable with service numbers 12590032, 12602044, 12603530, 12605843, 12630457, and 19210737. While this is the primary module for the 2007-2008 Acadia ECM, it also fits a wide range of other GM vehicles. Please match your part number or consult the list below to confirm fitment.
ACADIA 08 Electronic Control Module; (behind fan shroud), ID 19210737 (PCM)
ALLURE 08-09 Electronic Control Module; (lower air cleaner housing), 5.3L
AURA 08-09 Electronic Control Module; (RH firewall), 2.4L, w/hybrid
AURA 08-09 Electronic Control Module; (RH firewall), 3.6L
CANYON 08 Electronic Control Module; (RH firewall)
COBALT 06 Electronic Control Module; (LH front engine compartment), 2.4L (VIN B, 8th digit, 4-146)
COLORADO 08 Electronic Control Module; (RH firewall)
CTS 06 Electronic Control Module; (RH engine compartment), V-Series, ID 12603530
DEVILLE 05 Electronic Control Module; (LH engine compartment), ID 12590032
DTS 06 Electronic Control Module
DTS 08 Electronic Control Module
ENCLAVE 08 Electronic Control Module; (behind fan shroud), ID 19210737
ENCLAVE 08 Electronic Control Module; (behind fan shroud), ID 12607096
ENVOY 07-08 Electronic Control Module; 5.3L (LH engine)
ENVOY 08 Electronic Control Module; 4.2L (LH engine), ID 12607096, 19210737, 12636660
ENVOY 09 Electronic Control Module; (LH engine), 4.2L
G6 06 Electronic Control Module; (LH front engine compartment), ID 12603530
G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12590032, 12602044, 12603530, 12605843, 12607096, 12618163
G6 08 Electronic Control Module; (LH front engine compartment), 3.6L
G6 09 Electronic Control Module; (LH front engine compartment), 3.6L, ID 19210737, 12607096
GRAND PRIX 08 Electronic Control Module; (lower air cleaner box), 5.3L
HHR 06 Electronic Control Module; (LH rear engine compartment), 2.4L
HUMMER H3 08 Electronic Control Module; (RH firewall)
IMPALA 06 Electronic Control Module; (lower part of air cleaner box), 3.5L, 3.9L
IMPALA 08-09 Electronic Control Module; (lower part of air cleaner box), 5.3L
ION 06 Electronic Control Module; 2.4L (opt LE5)
ISUZU ASCENDER 08 Electronic Control Module; (4.2L, LH engine), ID 19210737, 12607096
ISUZU I-290 08 Electronic Control Module; (RH firewall)
ISUZU I-370 08 Electronic Control Module; (RH firewall)
LACROSSE 08-09 Electronic Control Module; (lower air cleaner housing), 5.3L
LUCERNE 06 Electronic Control Module; (lower part of air cleaner box), 4.6L
LUCERNE 08 Electronic Control Module; (lower part of air cleaner box), 4.6L, ID 12607096, 19210737
MALIBU 06 Electronic Control Module; 3.9L
MALIBU 08 Electronic Control Module; new style (emblem in bumper cover), 2.4L, w/hybrid, 3.6L
MALIBU 09-10 Electronic Control Module; 2.4L, w/hybrid
MALIBU 09 Electronic Control Module; 3.6L
MONTE CARLO 06 Electronic Control Module; (lower part of air cleaner box), 3.5L, 3.9L
MONTANA 06 Electronic Control Module; (LH engine compartment), (SV6), 3.9L
MONTANA 08-09 Electronic Control Module; (LH engine compartment)
OUTLOOK 08 Electronic Control Module; (behind fan shroud)
PURSUIT 06 Electronic Control Module; (LH front engine compartment), 2.4L
RAINIER 07 Electronic Control Module; (LH engine), 5.3L
RELAY 06 Electronic Control Module; (LH engine compartment), 3.9L
SAAB 9-7X 07 Electronic Control Module; (LH engine), 8 cylinder
SAAB 9-7X 08 Electronic Control Module; (LH engine), 5.3L, 6.0L
SOLSTICE 06 Electronic Control Module; (LH front frame rail)
SRX 08 Electronic Control Module; (LH engine compartment), (4.6L)
STS 06 Electronic Control Module; (LH frame rail), 4.4L
STS 08 Electronic Control Module; (LH frame rail), 4.4L, 4.6L
TERRAZA 06 Electronic Control Module; (LH engine compartment), 3.9L
TRAILBLAZER 07 Electronic Control Module; (LH engine), 5.3L, 6.0L
TRAILBLAZER 08 Electronic Control Module; (LH engine), ID 12636660, 19210737, 12607096
TRAILBLAZER 09 Electronic Control Module; (LH engine), 4.2L
UPLANDER 06 Electronic Control Module; (LH engine compartment), 3.9L
UPLANDER 08 Electronic Control Module; (LH engine compartment), (3.9L), ID 19210737, 12607096
UPLANDER 09 Electronic Control Module; (LH engine compartment), (3.9L)
VUE 08-09 Electronic Control Module; 2.4L, VIN Z (8th digit, opt LAT)
VUE 08 Electronic Control Module; 3.6L
VUE 09 Electronic Control Module; 3.6L, VIN 7 (8th digit, opt LY7)
VUE 10 Electronic Control Module; 3.6L
XLR 06 Electronic Control Module; (RH front engine compartment), 4.4L
XLR 08 Electronic Control Module; (RH front engine compartment)
XLR 09 Electronic Control Module; (RH front engine compartment), ID 12607096
Frequently Asked Questions
Do I need to get this ECM programmed by a dealer?
No. We handle the programming for you before we ship the part. Simply provide us with your vehicle’s VIN during checkout, and it will arrive ready to install with the latest GM software.
What is a VIN and where do I find it?
The VIN is your vehicle’s unique 17-digit identification number. You can find it on the driver’s side of the dashboard (visible through the windshield), on the driver’s door jamb sticker, or on your vehicle’s registration and insurance documents.
Where is the ECM located on my 2007-2008 GMC Acadia?
The ECM is located in the engine bay, mounted directly to the back of the radiator cooling fan assembly. It’s a silver metal box with large electrical connectors.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the ECM (common codes include P0601, P0606, U0100), then this replacement module will solve the problem. It’s crucial to ensure the root cause of the light is the ECM and not another sensor or wiring issue.
Is this part difficult to install myself?
For someone with basic mechanical skills and tools, the installation is very manageable. It involves disconnecting the battery, unplugging a few connectors, and removing a few bolts. No special programming tools are required on your end.