Restore Peak Performance to Your GM Vehicle
If you’re dealing with a frustrating check engine light, unexplained stalling, or erratic engine behavior in your 2007-2008 GMC Acadia, the Engine Control Module (ECM) is a highly likely culprit. As the central computer of your vehicle, the ECM is responsible for managing everything from fuel mixture and ignition timing to transmission shifting and emissions controls. When it begins to fail, it can create a cascade of confusing and costly problems. This replacement ECM, part number 12603530, is the definitive solution to get your vehicle running reliably again.
We take the guesswork and dealership expense out of the equation. Unlike a standard replacement part that requires a trip to the dealer for expensive programming, this module arrives at your door ready to install. We use your vehicle’s VIN to flash the unit with the very latest, most stable software directly from GM. This ensures perfect communication between all of your vehicle’s systems and restores the precise operational parameters your engine was designed with.
Case Study: A Tricky Diagnosis
I remember a 2008 Acadia that came into the shop a few years back. The owner was at his wit’s end. He’d replaced two O2 sensors and a MAF sensor trying to chase down intermittent stalling and a persistent U0100 ‘Lost Communication with ECM/PCM’ code. The vehicle would run fine for days, then suddenly die at a stoplight. After hooking up my scan tool and monitoring live data, I noticed the 5-volt reference signal would occasionally drop out for a split second—a classic sign of an internal ECM processor failure. We installed a VIN-programmed module just like this one, and the vehicle has been running without a single issue since. It’s a reminder that sometimes the ‘brain’ itself is the problem, not the sensors it’s reading.
Is Your Vehicle Showing These Symptoms?
A failing ECM can manifest in many ways. If you’re experiencing any of the following, it’s time to consider a replacement:
- âś” Check Engine Light is on with codes like P0601, P0606, or U0100
- âś” Vehicle won’t start or is very difficult to start
- âś” Engine stalls or misfires for no apparent reason
- âś” Noticeable decrease in fuel economy
- âś” Harsh or erratic automatic transmission shifting
- âś” The cooling fans run constantly or not at all
- âś” Failure to pass an emissions test
A Straightforward Guide to Installation
Installing your new ECM is a manageable job for a DIYer with basic tools. For the 2007-2008 Acadia, the ECM is typically located behind the cooling fan shroud.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes for the system to discharge.
- Locate the Module: On the Acadia, Enclave, and Outlook, you will find the ECM mounted to the rear of the radiator fan shroud. You may need to remove the air intake ducting for better access.
- Disconnect the Wiring: Carefully release the locking tabs on the electrical connectors and pull them straight out. Never force them. Inspect the connectors for any corrosion or damage.
- Remove the Old ECM: Unbolt the module from its mounting bracket.
- Install the New ECM: Mount your new, pre-programmed ECM and securely re-attach the electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect the Battery: Re-attach the negative battery terminal.
- Perform Security Relearn: You may need to perform a simple security relearn procedure to sync the new ECM with your vehicle’s anti-theft system. This typically involves turning the key to the ‘ON’ position for 10 minutes, then ‘OFF’ for 10 seconds, repeating this cycle three times.
Verified Vehicle Compatibility
This ECM is a direct replacement for service number 12603530 and is also interchangeable with part numbers: 12590032, 12602044, 12605843, 12607096, 12630457, and 19210737. It fits a wide range of GM vehicles. Please confirm your model and options below:
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 12607096
ENCLAVE 08 Electronic Control Module; (behind fan shroud), ID 19210737
ENVOY 07-08 Electronic Control Module; 5.3L (LH engine)
ENVOY 08 Electronic Control Module; 4.2L (LH engine), ID 12607096
ENVOY 08 Electronic Control Module; 4.2L (LH engine), ID 19210737
ENVOY 08 Electronic Control Module; 4.2L (LH engine), ID 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
G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12602044
G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12603530
G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12605843
G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12607096
G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12618163
G6 08 Electronic Control Module; (LH front engine compartment), 3.6L
G6 09 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12607096
G6 09 Electronic Control Module; (LH front engine compartment), 3.6L, ID 19210737
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
IMPALA 06 Electronic Control Module; (lower part of air cleaner box), 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 12607096
ISUZU ASCENDER 08 Electronic Control Module; (4.2L, LH engine), ID 19210737
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
LUCERNE 08 Electronic Control Module; (lower part of air cleaner box), 4.6L, ID 19210737
MALIBU 06 Electronic Control Module; 3.9L
MALIBU 08 Electronic Control Module; new style (emblem in bumper cover), 2.4L, w/hybrid
MALIBU 08 Electronic Control Module; new style (emblem in bumper cover), 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
MONTE CARLO 06 Electronic Control Module; (lower part of air cleaner box), 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
SAAB 9-7X 08 Electronic Control Module; (LH engine), 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
STS 08 Electronic Control Module; (LH frame rail), 4.6L
TERRAZA 06 Electronic Control Module; (LH engine compartment), 3.9L
TRAILBLAZER 07 Electronic Control Module; (LH engine), 5.3L
TRAILBLAZER 07 Electronic Control Module; (LH engine), 6.0L
TRAILBLAZER 08 Electronic Control Module; (LH engine), ID 12607096
TRAILBLAZER 08 Electronic Control Module; (LH engine), ID 12636660
TRAILBLAZER 08 Electronic Control Module; (LH engine), ID 19210737
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 12607096
UPLANDER 08 Electronic Control Module; (LH engine compartment), (3.9L), ID 19210737
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
Why do you need my VIN?
Why do you need my VIN?
Your Vehicle Identification Number (VIN) is essential for us to program the ECM with the exact software calibration your specific vehicle requires. This includes engine parameters, transmission strategy, and factory anti-theft information, ensuring a seamless installation and proper function.
Is this part ready to install out of the box?
Why do you need my VIN?
Your Vehicle Identification Number (VIN) is essential for us to program the ECM with the exact software calibration your specific vehicle requires. This includes engine parameters, transmission strategy, and factory anti-theft information, ensuring a seamless installation and proper function.
Will this fix my check engine light?
Why do you need my VIN?
Your Vehicle Identification Number (VIN) is essential for us to program the ECM with the exact software calibration your specific vehicle requires. This includes engine parameters, transmission strategy, and factory anti-theft information, ensuring a seamless installation and proper function.
My original part has a different number. Will this work?
Why do you need my VIN?
Your Vehicle Identification Number (VIN) is essential for us to program the ECM with the exact software calibration your specific vehicle requires. This includes engine parameters, transmission strategy, and factory anti-theft information, ensuring a seamless installation and proper function.