🚗 Will This Fit Your Vehicle?
Use the reference fitment table below to see typical applications for GM part 12678511. Fitment can vary by trim, emissions package, and production date—always compare your VIN and existing module part number when in doubt.
Need confirmation? Send us your 17-digit VIN (and your current ECM part number if available) before purchase—we'll verify compatibility for your vehicle.
OEM interchange / superseded references: 12636660, 12607096
| Years |
Vehicle |
Engine (reference) |
| 2008–2009 |
Buick Allure |
8 Cyl 5.3L |
| 2008 |
Buick Enclave |
6 Cyl 3.6L |
| 2008–2009 |
Buick LaCrosse |
8 Cyl 5.3L |
| 2007 |
Buick Rainier |
8 Cyl 5.3L |
| 2008 |
Cadillac XLR |
8 Cyl 4.4L · 8 Cyl 4.6L |
| 2008 |
Chevrolet Colorado |
4 Cyl 2.9L · 5 Cyl 3.7L |
| 2008–2009 |
Chevrolet Impala |
8 Cyl 5.3L |
| 2008–2010 |
Chevrolet Malibu |
4 Cyl 2.4L · 6 Cyl 3.6L |
| 2007–2008 |
Chevrolet Trailblazer |
8 Cyl 5.3L · 8 Cyl 6.0L |
| 2008–2009 |
Chevrolet Uplander |
6 Cyl 3.9L · 6 Cyl 3.9L Flex |
| 2008 |
GMC Acadia |
6 Cyl 3.6L |
| 2008 |
GMC Canyon |
4 Cyl 2.9L · 5 Cyl 3.7L |
| 2007–2008 |
GMC Envoy |
8 Cyl 5.3L |
| 2008 |
Hummer H3 |
5 Cyl 3.7L · 8 Cyl 5.3L |
| 2008–2009 |
Pontiac G6 |
6 Cyl 3.6L |
| 2008 |
Pontiac Grand Prix |
8 Cyl 5.3L |
| 2008–2009 |
Pontiac Montana |
6 Cyl 3.9L · 6 Cyl 3.9L Flex |
| 2008–2009 |
Saturn Aura |
4 Cyl 2.4L · 6 Cyl 3.6L |
| 2008 |
Saturn Outlook |
6 Cyl 3.6L |
| 2008–2010 |
Saturn Vue |
6 Cyl 3.6L |
Why Buy From Us?
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Professionally remanufactured – Works like new
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VIN programmed – Pre-flashed with your VIN for compatibility
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No core charge – Keep your old unit
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DIY possible (with tools) – Requires key programming and a capable scan tool
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1-year warranty – Quality and support you can trust
Installation Requirements
This Engine Control Module (ECM/PCM) is a direct replacement, pre-programmed to your VIN, but it requires immobilizer relearn (key programming) after installation.
To complete installation, you will need one of the following:
- An automotive locksmith
- A key programming tool or advanced scan tool (capable of performing immobilizer/key relearn)
In many cases, you will also need to perform a crankshaft variation relearn to clear codes such as P0315 / P1336. This procedure also requires a capable scan tool.
⚠️ Important Notes
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VIN required – Provide your 17-digit VIN at checkout or by message so we can program the ECM.
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Know before you buy – You will need access to key programming equipment or a professional locksmith.
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Don't need programming? – Tell us at checkout if you prefer the ECM without programming. You must program it yourself after installation. Send your VIN or part number so we can double-check fitment.
Fast & Reliable Service
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Ships quickly – Most orders ship within 1 business day via USPS Priority Mail (expedited options available).
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International shipping – Available; contact us for options and delivery estimates.
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Customer support – Questions about installation or compatibility? We're here to help.
Fast shipping — get your vehicle back on the road.