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GM 12678511
PCM

2006-2010 GM

Customer Questions & Expert Answers (21)
GM 12678511 PCM
GM 12678511 PCM
GM 12678511 PCM
GM 12678511 PCM
GM 12678511 PCM
GM 12678511 PCM
  • Part Description
    Module Assembly-Engine Control (W/2ND Mpu); Engine Control Module
  • Replaces
    12636660, 12607096
  • Manufacturer
    General Motors
Make sure this part fits
$265.60 MSRP: $538.40
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  • 2009 Cadillac CTS PCM Diagram for 12678511
    The diagram listed above is for your reference. View diagram for your vehicle

    Related Parts for 12678511

  • Vehicle Fitment

    Year Make Model Trim Engine
    2008 Buick EnclaveCX, CXL6 Cyl 3.6 L GAS
    2008-2009 Buick LaCrosseSuper8 Cyl 5.3 L GAS
    2006-2008 Buick LucerneCXL, CXS, Super8 Cyl 4.6 L GAS
    2007 Buick RainierCXL6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS
    2006-2007 Buick TerrazaCX, CXL6 Cyl 3.9 L FLEX, 6 Cyl 3.9 L GAS
    2009, 2006-2007 Cadillac CTSV8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS
    2006-2009 Cadillac DTSBase, Luxury, Platinum8 Cyl 4.6 L GAS
    2007-2009 Cadillac SRXBase8 Cyl 4.6 L GAS
    2006-2010 Cadillac STSBase, Platinum, V8 Cyl 4.4 L GAS, 8 Cyl 4.6 L GAS
    2006-2009 Cadillac XLRBase, Platinum, V8 Cyl 4.4 L GAS, 8 Cyl 4.6 L GAS
    View More
    Warning: California's Proposition 65

  • Customer Questions & Expert Answers

    Q:
    Is this 12678511 designed for my car? Posted by ChevyPartsDeal Specialist
    A:
    Please Select Your Vehicle model to see if part number 12678511 is suitable before ordering.
    Posted by ChevyPartsDeal Specialist
    Q:
    What is the next step after disconnecting the connectors for the 2008 Buick Enclave? Posted by Customer
    A:
    Gently lift the retaining tab and remove the ECM from the support brackets.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Engine Control Module
    Q:
    What should be done after inspecting the components for the 2007 Buick Lucerne? Posted by Customer
    A:
    Install the new PCM into the lower air cleaner housing, reconnect the engine harness electrical connectors, and engage the connector lever locks.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Engine Control Module
    Q:
    What should be done if the ECM bracket is removed for the 2008 Buick LaCrosse? Posted by Customer
    A:
    Reinstall the ECM bracket and tighten the bracket bolts to 10 N.m (89 lb in).
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Engine Control Module
    Q:
    What does the service of the powertrain control module (PCM) typically involve for the 2007 Buick Rainier? Posted by Customer
    A:
    It typically involves either replacing the PCM or programming the electrically erasable programmable read-only memory (EEPROM).
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Engine Control Module
    Q:
    What does the service of the engine control module (ECM) normally consist of for the 2007 Buick Terraza? Posted by Customer
    A:
    Replacement of the ecm or eeprom programming.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Engine Control Module
    Q:
    What should be done after installing the ECM for the 2009 Cadillac CTS? Posted by Customer
    A:
    Connect and lock the engine wiring harness electrical connectors to the ECM, reconnect the negative battery cable, and program the ECM if required.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Engine Control Module
    Q:
    What is the first action in the removal process for the 2007 Cadillac DTS? Posted by Customer
    A:
    Disconnect the negative battery cable.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Engine Control Module
    Q:
    What is the installation process for a new ECM bracket for the 2008 Cadillac SRX? Posted by Customer
    A:
    Position and install the new ECM bracket, ensuring it engages the locking tabs.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Engine Control Module
    Q:
    What should be done after installing the ECM for the 2010 Cadillac STS? Posted by Customer
    A:
    Connect and lock the engine wiring harness connectors to the ECM, reconnect the negative battery cable, and program the ECM as necessary.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Engine Control Module
    Q:
    What needs to be removed to access the ECM for the 2008 Cadillac XLR? Posted by Customer
    A:
    Remove the right front wheelhouse filler panel.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Engine Control Module
    Q:
    What is the final step to complete the ECM replacement process for the 2007 Chevrolet Cobalt? Posted by Customer
    A:
    Install the engine control module cover and program the ECM.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Engine Control Module
    Q:
    What additional procedure is required if equipped with a manual transmission for the 2008 Chevrolet Colorado? Posted by Customer
    A:
    Perform the clutch pedal position sensor learn procedure.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Engine Control Module
    Q:
    What is the first step in the replacement process for the 2007 Chevrolet HHR? Posted by Customer
    A:
    Use a scan tool to retrieve and record the percentage of remaining engine oil life.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Engine Control Module
    Q:
    What are the steps for installing the new ECM for the 2007 Chevrolet Impala? Posted by Customer
    A:
    Place the ECM back into the air cleaner lower housing, reconnect the two ECM electrical connectors, reinstall the air cleaner assembly and the left front inner fender brace, then reconnect the negative battery cable.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Engine Control Module
    Q:
    What is the installation process for the new PCM for the 2006 Chevrolet Malibu? Posted by Customer
    A:
    Slide the new PCM into the bracket on the front of the battery box and push down until the retaining tab snaps into place.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Engine Control Module
    Q:
    What is the first step in servicing the engine control module (ECM) for the 2009 GMC Envoy? Posted by Customer
    A:
    Determine if replacement or programming of the eeprom is necessary.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Engine Control Module
    Q:
    What should be recorded before disconnecting the negative battery cable for the 2008 Chevrolet Uplander? Posted by Customer
    A:
    Record the remaining engine oil life.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Engine Control Module
    Q:
    What is the installation process for the ECM for the 2007 GMC Acadia? Posted by Customer
    A:
    Position the ECM bracket and install the bolts, tightening them to 6 N.m (53 lb in). Snap the ECM into place under the retaining tab and connect the upper electrical connector to the ECM.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Engine Control Module
    Q:
    What is the first step in servicing the engine control module (ECM) for the 2008 Chevrolet Trailblazer? Posted by Customer
    A:
    Determine if replacement or programming of the eeprom is necessary.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Engine Control Module
    Q:
    What is the installation procedure for the ECM for the 2008 GMC Canyon? Posted by Customer
    A:
    Place the ECM into the mounting bracket, ensuring the tabs fully engage, then connect the ECM harness connectors to the ECM body.
    Posted by ChevyPartsDeal Specialist
    See vehicle specific detailed answers for this Engine Control Module
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

OEM GM PCM 12678511 Designed for Proper Fit and Performance

Original OEM GM parts deliver superior quality and meet all performance standards needed for optimal automotive operation. The authentic part identified by 12678511 PCM is available in the market under the name GM Engine Control Module. This genuine product has a full warranty coverage from the manufacturer available at all authorized GM dealers throughout the United States. This part 12678511 PCM fits certain Chevrolet Colorado, Malibu, Impala models, as well as GMC Acadia, Canyon, Envoy. Additionally, it is compatible with Cadillac CTS, XLR, SRX and Buick Enclave, LaCrosse, Lucerne models.
The original GM component designated by Manufacturer Part Number 12678511 maintains top performance when functioning as the Module Assembly-Engine Control (W/2ND Mpu); Engine Control Module unit. The component 12678511 is constructed from durable material and its dimensions span 8.2 x 7.4 x 4.0 inches while weighing 2.30 Pounds. The Direct Replacement component is ready in New condition to ensure full compatibility with your vehicle system. This component receives the designation of ECM; Module, Emission Control System. The part 12678511 has available replacement options 12636660, 12607096. GM manufacturer provides a warranty that ensures reliable operation of this product. The Shipping Policy and Return Policy pages outline complete details regarding shipping procedures and return processes.
If you want to save money in the long run on maintenance and repairs, you should choose OEM products because they're of the top level of durability. Are you on the quest of finding GM parts? Our site is worth a visit. We stock an endless selection of high-quality GM components including things like ignition coils all the way through to fan shrouds and all at prices that can not be matched. You have nothing to worry about because all our OEM parts are covered with a manufacturer warranty, which guarantees superior quality and value.