Restore Peak Performance to Your GM Vehicle
Is your 2007-2008 GMC Acadia suffering from frustrating and unpredictable issues like stalling, a persistent check engine light, or erratic engine behavior? You’re not alone. The Engine Control Module (ECM) is the brain of your vehicle, and when it starts to fail, it can cause a host of problems that are difficult to diagnose. This replacement Engine Control Module is your reliable, straightforward solution to restore your vehicle’s performance and dependability without the high costs and scheduling hassles of a dealership visit.
We take the guesswork out of the repair. Simply provide us with your vehicle’s VIN (Vehicle Identification Number) after purchase, and our technicians will program the module with the latest, most stable software updates directly from GM. This ensures that when the part arrives, it’s ready for installation, communicating perfectly with your vehicle’s specific systems and options. This is the most effective way to solve complex electronic issues and get your vehicle running smoothly again.
A Technician’s Notebook: The Phantom Stall on a 2008 Acadia
I remember a 2008 Acadia that came into the shop with a problem that was driving the owner crazy. It would stall intermittently at stoplights, but never consistently, and it only threw a generic ‘Lost Communication’ code (U0100) once in a blue moon. We checked fuel pressure, sensors, and wiring harnesses for days. Everything seemed fine. On a hunch, based on seeing similar issues in these platforms, we suggested replacing the ECM. The original module had developed an internal fault that only surfaced under specific operating temperatures. We installed one of our pre-programmed modules, and the problem vanished instantly. The customer called a week later, overjoyed that their family vehicle was finally safe and reliable again. Sometimes, the simplest solution is the right one.
Is Your Vehicle Showing These Signs of ECM Failure?
- ✔ Check Engine Light is on with codes related to internal module failure (e.g., P0601, P0606) or communication errors (U0100).
- ✔ Your engine cranks but refuses to start.
- ✔ Unexplained drops in fuel economy.
- ✔ The engine runs rough, misfires, or stalls unexpectedly.
- ✔ Automatic transmission shifts harshly or at the wrong times.
- ✔ Failure to pass an emissions inspection.
Your Straightforward ECM Installation Guide
Replacing the ECM on your Acadia is a manageable job for a confident DIYer. While the exact location can vary on other GM models, on the 2007-2008 Acadia, you’ll find it behind the fan shroud. Always consult a repair manual for your specific vehicle if you’re unsure.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes to allow all systems to discharge.
- Locate the Module: On the Acadia, the ECM is typically located behind the engine’s cooling fan shroud. You may need to remove a cover for access.
- 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 pins for any corrosion or damage.
- Remove the Old ECM: Unbolt the old module from its mounting bracket.
- Install the New ECM: Mount your new, pre-programmed module in place and securely tighten the bolts. Reconnect the electrical harnesses until they click firmly into place.
- Final Steps: Reconnect the negative battery terminal. In some cases, a security relearn procedure may be necessary, which can often be done without special tools. Start the vehicle and let it idle for a few minutes to allow the systems to sync.
Guaranteed Fitment for Your GM Vehicle
This ECM, part number 12602044, is a direct replacement for a wide range of General Motors vehicles. It is interchangeable with service numbers 12590032, 12603530, 12605843, 12607096, 12630457, and 19210737. Please verify your vehicle is on the list below to ensure proper compatibility. Matching the service number on your original part is the best way 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
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, 08 Electronic Control Module
ENCLAVE 08 Electronic Control Module; (behind fan shroud), ID 12607096 or 19210737
ENVOY 07-08 Electronic Control Module; 5.3L (LH engine)
ENVOY 08-09 Electronic Control Module; 4.2L (LH engine)
G6 06-09 Electronic Control Module; (LH front engine compartment)
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, 08-09 Electronic Control Module; (lower part of air cleaner box)
ION 06 Electronic Control Module; 2.4L (opt LE5)
ISUZU ASCENDER 08 Electronic Control Module; (4.2L, LH engine)
ISUZU I-290 / I-370 08 Electronic Control Module; (RH firewall)
LACROSSE 08-09 Electronic Control Module; (lower air cleaner housing), 5.3L
LUCERNE 06, 08 Electronic Control Module; (lower part of air cleaner box), 4.6L
MALIBU 06, 08-10 Electronic Control Module
MONTE CARLO 06 Electronic Control Module; (lower part of air cleaner box)
MONTANA 06, 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 07-08 Electronic Control Module; (LH engine)
SOLSTICE 06 Electronic Control Module; (LH front frame rail)
SRX 08 Electronic Control Module; (LH engine compartment), (4.6L)
STS 06, 08 Electronic Control Module; (LH frame rail)
TERRAZA 06 Electronic Control Module; (LH engine compartment), 3.9L
TRAILBLAZER 07-09 Electronic Control Module; (LH engine)
UPLANDER 06, 08-09 Electronic Control Module; (LH engine compartment)
VUE 08-10 Electronic Control Module
XLR 06, 08-09 Electronic Control Module; (RH front engine compartment)
Frequently Asked Questions
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, simply send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship the module until we receive this information.
Is this part truly plug-and-play?
Yes, for most vehicles. Because we program it to your VIN, it eliminates the need for a trip to the dealership for software flashing. In some cases, a simple key-cycle or security relearn procedure is required, which is detailed in many online resources.
Will this fix my specific problem?
This module corrects issues directly caused by a failing ECM. While it solves many common problems like stalling and no-start conditions, we always recommend a proper diagnosis by a qualified mechanic to confirm the ECM is the source of your issue.
What if I have a different part number on my old module?
This module is a direct replacement for several service numbers, including 12590032, 12603530, 12607096, and others listed above. As long as your vehicle and original part number are on our compatibility list, this module will work correctly.
Do I need to send my old ECM back?
No core charge or return is required for this part. You can keep or responsibly dispose of your old module.