Restore Peak Performance to Your Vehicle’s Engine
Is your Buick Allure or other GM vehicle suffering from frustrating issues like a persistent check engine light, poor fuel economy, stalling, or a no-start condition? These are classic signs of a failing Engine Control Module (ECM), the computer that serves as the brain of your engine. When it falters, the entire vehicle’s performance and reliability are compromised. This isn’t just an inconvenience; it can be a serious safety concern. We offer a direct, reliable solution: a fully functional ECM, part number 12602044, that arrives at your door programmed specifically for your vehicle.
Case Study: A Tricky Diagnosis
I remember a 2008 Chevy Impala that came into my shop with a collection of bizarre, intermittent symptoms. The owner had already replaced the throttle body and a few sensors, but the car would still randomly lose power and throw a U0100 (Lost Communication with ECM/PCM) code. After confirming the wiring harness was solid, we suspected the ECM itself. The internal processor was failing intermittently under heat. Swapping in a junkyard module didn’t work because of the anti-theft system and mismatched software. Our solution was a VIN-programmed module just like this one. Once installed, all communication was restored, the codes vanished, and the car ran perfectly. It turned a week-long headache into a one-hour fix.
Common Signs of a Failing ECM
- ✔ Check Engine Light is on with no clear cause.
- ✔ Vehicle refuses to start or has trouble turning over.
- ✔ A noticeable drop in fuel efficiency.
- ✔ Engine stalling, stuttering, or misfiring while driving.
- ✔ Unexplained transmission shifting problems.
- ✔ Active diagnostic trouble codes (DTCs) like P0601, P0606, or U0100.
- ✔ Failure to pass state emissions testing.
The Power of VIN-Specific Programming
Don’t get stuck with a generic module that requires an expensive trip to the dealership for programming. We handle the hard part for you. Before we ship your 2008-2009 Allure ECM, our technicians will flash it with the latest GM-certified software using the Vehicle Identification Number (VIN) you provide. This ensures that the module is a perfect match for your vehicle’s specific configuration, including its engine, transmission, and factory options. This process restores factory performance and often corrects drivability issues that were caused by outdated software.
A Straightforward Guide to Installation
Installing your new 2008-2009 Allure ECM is a manageable job for a confident DIYer or a quick task for any professional mechanic. For the 2008-2009 Buick Allure 5.3L, the ECM is typically located in the lower air cleaner housing.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait 10-15 minutes for the system to fully discharge.
- Locate the ECM: Find the existing module. On many compatible vehicles, it’s on the firewall, near the air filter box, or on the frame rail.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that must be released. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed ECM into place. Reconnect the electrical connectors, ensuring they click securely into place.
- Reconnect Battery: Reattach the negative battery terminal.
- Perform Security Relearn: In many cases, you will 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 10-15 minutes, then ‘OFF’, and repeating two more times. Your vehicle’s service manual will have the exact steps.
Will This Fit My Vehicle?
This ECM is a direct replacement for service number 12602044 and is also interchangeable with part numbers 12590032, 12603530, 12605843, 12607096, 12630457, and 19210737. It fits a wide array of GM, Isuzu, and Saab vehicles. Please verify your model and options in the list below to ensure compatibility.
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
How does the VIN programming process work?
How does the VIN programming process work?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN. Our technicians use this number to access the latest official software from GM and load it onto the module. This ensures the ECM is perfectly configured for your car’s systems before we ship it.
Will I need any special tools for installation?
How does the VIN programming process work?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN. Our technicians use this number to access the latest official software from GM and load it onto the module. This ensures the ECM is perfectly configured for your car’s systems before we ship it.
Is this a plug-and-play part?
How does the VIN programming process work?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN. Our technicians use this number to access the latest official software from GM and load it onto the module. This ensures the ECM is perfectly configured for your car’s systems before we ship it.
What if I have a different part number on my old ECM?
How does the VIN programming process work?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN. Our technicians use this number to access the latest official software from GM and load it onto the module. This ensures the ECM is perfectly configured for your car’s systems before we ship it.