Restore Peak Performance to Your GM Vehicle
Is your car suffering from frustrating, hard-to-diagnose electrical problems? A faulty Engine Control Module (ECM) is often the hidden culprit behind issues like a persistent check engine light, poor engine performance, random stalling, or even a no-start condition. As a technician with over two decades of experience, I’ve seen how a failing ECM can mimic a dozen other problems, leading to wasted time and money on incorrect repairs. This replacement Engine Control Module, part number 12607096, is the reliable, direct-fit solution to get your vehicle running smoothly again.
This isn’t just a part in a box. We take the hassle and high cost out of the equation by professionally programming the module to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This means no expensive trips to the dealership for programming. You’ll receive a module loaded with the latest GM software updates, ensuring optimal performance, fuel efficiency, and emissions control right out of the box. It’s the smart, efficient way to solve your engine management problems.
From the Diagnostic Bay: The Intermittent No-Start Mystery
I remember a 2008 Pontiac G6 that came into my shop with a maddeningly intermittent no-start condition. The owner had already replaced the battery and starter. Sometimes it would start perfectly for a week, then refuse to crank for an entire afternoon. Scans showed inconsistent communication loss codes (U-codes) with the ECM. After checking all the wiring and grounds, we tested the ECM itself. We found that internal voltage regulators were failing intermittently, especially on hot days. We replaced it with a VIN-programmed module like this one, and the problem was solved for good. It’s a classic example of how a failing ECM can cause symptoms that seem completely unrelated at first glance.
Common Signs of a Failing ECM
If you’re experiencing any of the following, a faulty engine computer could be the cause. In my shop, these are the top indicators I look for when diagnosing a potential ECM failure.
- ✔ Check Engine Light is on, often with communication-related Diagnostic Trouble Codes (DTCs) like P0601, P0606, or U0100.
- ✔ Vehicle will not start or is very difficult to start.
- ✔ Stalling or rough idling for no apparent reason.
- ✔ Noticeable decrease in fuel economy.
- ✔ Erratic transmission shifting or failure to shift properly.
- ✔ Misfires or poor acceleration.
- ✔ Cooling fans not turning on, leading to overheating.
A Straightforward Guide to Installation
Installing your new ECM is a manageable job for a confident DIYer. The key is to be patient and methodical. While the exact location varies by model (see fitment list), the general process is similar.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes to allow all system capacitors to discharge.
- Locate the ECM: The module is typically found in the engine bay, often on the firewall, behind the fan shroud, or inside the air cleaner housing.
- Disconnect the Connectors: Carefully unlatch and remove the wiring harness connectors. These connectors have locking tabs; never force them. Inspect the pins for any corrosion or damage.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the mounting hardware as you will reuse it.
- Install the New Module: Mount your new, pre-programmed ECM in place and secure it with the original hardware.
- Reconnect Everything: Firmly plug the wiring harness connectors back into the new module until they click into place. Reconnect the negative battery terminal.
- Security Relearn (If Necessary): In many cases, the vehicle will start and run perfectly. Some GM vehicles may require a simple security relearn procedure, which typically involves turning the key to the ‘ON’ position for 10-15 minutes. Consult your vehicle’s service information for specific steps if needed.
Verified Vehicle Compatibility
This module is a direct replacement for service numbers 12590032, 12602044, 12603530, 12605843, 12607096, 12630457, and 19210737. Please verify your part number and match it to the extensive list below to ensure a perfect fit.
This part will fit these makes and models with these options
ALLURE 08-09 Electronic Control Module; (lower air cleaner housing), 5.3L; COLORADO 08 Electronic Control Module; (RH firewall); ENVOY 07-08 Electronic Control Module; 5.3L (LH engine); ENVOY 08 Electronic Control Module; 4.2L (LH engine), ID 12607096; G6 09 Electronic Control Module; (LH front engine compartment), 3.6L, ID 19210737; MONTE CARLO 06 Electronic Control Module; (lower part of air cleaner box), 3.5L; XLR 09 Electronic Control Module; (RH front engine compartment), ID 12607096; AURA 08-09 Electronic Control Module; (RH firewall), 2.4L, w/hybrid; DTS 06 Electronic Control Module; DEVILLE 05 Electronic Control Module; (LH engine compartment), ID 12590032; G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12605843; IMPALA 06 Electronic Control Module; (lower part of air cleaner box), 3.5L; LACROSSE 08-09 Electronic Control Module; (lower air cleaner housing), 5.3L; STS 06 Electronic Control Module; (LH frame rail), 4.4L; TRAILBLAZER 08 Electronic Control Module; (LH engine), ID 12636660; UPLANDER 09 Electronic Control Module; (LH engine compartment), (3.9L); ISUZU ASCENDER 08 Electronic Control Module; (4.2L, LH engine), ID 19210737; SAAB 9-7X 07 Electronic Control Module; (LH engine), 8 cylinder; TRAILBLAZER 07 Electronic Control Module; (LH engine), 5.3L; ENCLAVE 08 Electronic Control Module; (behind fan shroud), ID 19210737; LUCERNE 08 Electronic Control Module; (lower part of air cleaner box), 4.6L, ID 12607096; MONTE CARLO 06 Electronic Control Module; (lower part of air cleaner box), 3.9L; RAINIER 07 Electronic Control Module; (LH engine), 5.3L; ISUZU ASCENDER 08 Electronic Control Module; (4.2L, LH engine), ID 12607096; CTS 06 Electronic Control Module; (RH engine compartment), V-Series, ID 12603530; STS 08 Electronic Control Module; (LH frame rail), 4.6L; G6 06 Electronic Control Module; (LH front engine compartment), ID 12603530; G6 08 Electronic Control Module; (LH front engine compartment), 3.6L; ION 06 Electronic Control Module; 2.4L (opt LE5); MALIBU 06 Electronic Control Module; 3.9L; MALIBU 08 Electronic Control Module; new style (emblem in bumper cover), 2.4L, w/hybrid; RELAY 06 Electronic Control Module; (LH engine compartment), 3.9L; VUE 08-09 Electronic Control Module; 2.4L, VIN Z (8th digit, opt LAT); OUTLOOK 08 Electronic Control Module; (behind fan shroud); SOLSTICE 06 Electronic Control Module; (LH front frame rail); VUE 08 Electronic Control Module; 3.6L; VUE 09 Electronic Control Module; 3.6L, VIN 7 (8th digit, opt LY7); ACADIA 07-08 Electronic Control Module; (behind fan shroud), ID 12607096 (ECM); AURA 08-09 Electronic Control Module; (RH firewall), 3.6L; ENVOY 08 Electronic Control Module; 4.2L (LH engine), ID 19210737; G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12603530; GRAND PRIX 08 Electronic Control Module; (lower air cleaner box), 5.3L; HHR 06 Electronic Control Module; (LH rear engine compartment), 2.4L; STS 08 Electronic Control Module; (LH frame rail), 4.4L; G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12590032; ISUZU I-290 08 Electronic Control Module; (RH firewall); LUCERNE 06 Electronic Control Module; (lower part of air cleaner box), 4.6L; MALIBU 09-10 Electronic Control Module; 2.4L, w/hybrid; UPLANDER 08 Electronic Control Module; (LH engine compartment), (3.9L), ID 19210737; IMPALA 06 Electronic Control Module; (lower part of air cleaner box), 3.9L; MONTANA 06 Electronic Control Module; (LH engine compartment), (SV6), 3.9L; TRAILBLAZER 08 Electronic Control Module; (LH engine), ID 19210737; ENVOY 08 Electronic Control Module; 4.2L (LH engine), ID 12636660; G6 07 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12602044; TRAILBLAZER 08 Electronic Control Module; (LH engine), ID 12607096; TRAILBLAZER 09 Electronic Control Module; (LH engine), 4.2L; CANYON 08 Electronic Control Module; (RH firewall); COBALT 06 Electronic Control Module; (LH front engine compartment), 2.4L (VIN B, 8th digit, 4-146); ISUZU I-370 08 Electronic Control Module; (RH firewall); MALIBU 09 Electronic Control Module; 3.6L; SRX 08 Electronic Control Module; (LH engine compartment), (4.6L); SAAB 9-7X 08 Electronic Control Module; (LH engine), 5.3L; ENCLAVE 08 Electronic Control Module; (behind fan shroud), ID 12607096; G6 09 Electronic Control Module; (LH front engine compartment), 3.6L, ID 12607096; IMPALA 08-09 Electronic Control Module; (lower part of air cleaner box), 5.3L; XLR 06 Electronic Control Module; (RH front engine compartment), 4.4L; XLR 08 Electronic Control Module; (RH front engine compartment); ENVOY 09 Electronic Control Module; (LH engine), 4.2L; 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; LUCERNE 08 Electronic Control Module; (lower part of air cleaner box), 4.6L, ID 19210737; MONTANA 08-09 Electronic Control Module; (LH engine compartment); PURSUIT 06 Electronic Control Module; (LH front engine compartment), 2.4L; VUE 10 Electronic Control Module; 3.6L; ACADIA 08 Electronic Control Module; (behind fan shroud), ID 19210737 (PCM); DTS 08 Electronic Control Module; TERRAZA 06 Electronic Control Module; (LH engine compartment), 3.9L; TRAILBLAZER 07 Electronic Control Module; (LH engine), 6.0L; SAAB 9-7X 08 Electronic Control Module; (LH engine), 6.0L; HUMMER H3 08 Electronic Control Module; (RH firewall); MALIBU 08 Electronic Control Module; new style (emblem in bumper cover), 3.6L; UPLANDER 08 Electronic Control Module; (LH engine compartment), (3.9L), ID 12607096; UPLANDER 06 Electronic Control Module; (LH engine compartment), 3.9L;
Frequently Asked Questions
What is VIN programming and why do I need it?
VIN programming loads your vehicle’s unique identification number and factory-specified software onto the ECM. This ensures all components, from the engine to the transmission and anti-theft system, communicate correctly. We perform this service for you so the part is ready for installation upon arrival.
How do I provide my VIN?
After you complete your purchase, you will need to send us your 17-digit VIN. We cannot ship the module until we receive this information, as it is essential for the programming process.
Will I need to have this programmed again by a dealer?
No. This ECM comes fully programmed with the latest GM software updates based on your VIN. This service eliminates the need for additional, costly dealership programming.
Is this part compatible with other service numbers?
Yes. This module is a direct, interchangeable replacement for several service numbers, including 12590032, 12602044, 12603530, and others listed in the description. Matching any of these numbers ensures compatibility.
What if my car has an immobilizer or anti-theft system?
Our VIN programming correctly pairs the module to your vehicle’s factory settings. In some cases, a simple key-cycle ‘relearn’ procedure may be needed after installation to sync your keys with the new ECM. This procedure is straightforward and does not require special tools.
