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GM 12579355
Wire Connector

2005-2020 GM

Customer Questions & Expert Answers (13)
GM 12579355 Wire Connector
GM 12579355 Wire Connector
  • Part Description
    Wire Assembly-Ignition Coil
  • Manufacturer
    General Motors
Make sure this part fits
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  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine GM
    Manufacturer Part Number12579355
    Part DescriptionWire Assembly-Ignition Coil
    Other NamesWire Harness; Plug Wire; Harness; Wire; Wire, Spark Plug Or Coil
    Item Dimensions6.2 x 4.1 x 3.1 inches
    Item Weight0.60 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU12579355
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65
  • Vehicle Fitment

    Year Make Model Trim Engine
    2008-2009 Buick LaCrosseSuper8 Cyl 5.3 L GAS
    2005 Buick RainierCXL, CXL Plus6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS
    2006-2007 Cadillac CTSV8 Cyl 6.0 L GAS
    2007-2014 Cadillac EscaladeBase, Hybrid, Hybrid Platinum, Luxury, Platinum, Premium8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV), 8 Cyl 6.0 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
    2007-2014 Cadillac Escalade ESVBase, Luxury, Platinum, Premium8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
    2007-2013 Cadillac Escalade EXTBase, Luxury, Premium8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
    2007-2013 Chevrolet AvalancheBlack Diamond LS, Black Diamond LT, Black Diamond LTZ, LS, LT, LTZ8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
    2010-2015 Chevrolet CamaroSS, Z/288 Cyl 6.2 L GAS, 8 Cyl 7.0 L GAS
    2005-2013 Chevrolet Corvette427, 427 Limited Edition Z06, Base, Grand Sport, Z06, Z06 Carbon8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS, 8 Cyl 7.0 L GAS
    2008-2014 Chevrolet Express 1500Base, LS, LT8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
    View More
  • Customer Questions & Expert Answers

    Q:
    Is this 12579355 designed for my car? Posted by ChevyPartsGiant Specialist
    A:
    Please Select Your Vehicle model to see if part number 12579355 is suitable before ordering.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the RH spark plug wires on Cadillac Escalade? Posted by Customer
    A:
    To remove right side Spark Plug wires, first remove right front wheelhouse liner, then remove the right side plug wires from the wheel opening. Next, remove the Spark Plug wire from the Spark Plug by using the boot to turn it a 1/2 turn and only pull on the boot. Also, the Spark Plug wire should be disconnected from the Ignition Coil by twisting the boot a 1/2 turn and pulling only on the boot. For installation, make the Spark Plug wire accessible to the Ignition Coil then to the Spark Plug. Check the Spark Plug wire for proper installation by pushing a boot sideways to check the seating for a loose boot. Install any loose boot. Lastly, if the right side Spark Plug wires were replaced, return the right front wheelhouse liner.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the Spark Plug Wires on Chevrolet Express 2500? Posted by Customer
    A:
    You must start the procedure of Spark Plug wire replacement by taking off the engine cover. You can remove Spark Plug wires by twisting each wire 1/2 turn and grasping only the boot portion before pulling them away. To disconnect Spark Plug wires from the Ignition Coil twist each boot 1/2 turn before pulling only at the boot end. The square designed melco(R) has Spark Plug wires that extend 145 mm (5.70 in) while the round designed delphi(R) extends 110 mm (4.30 in). There are two different manufacturers for the Spark Plug wires: the Spark Plug wire system includes two branded options: the melco(R) (square design) and the delphi(R) (round design). The two designs require separate Spark Plug wires and dedicated mounting brackets such as the melco(R) (square design) coil mounting bracket and the delphi(R) (round design) coil mounting bracket. The Spark Plug wire installation process begins by attaching wires from the coil to their corresponding spark plugs. Perform boot inspection by gently pushing each wire boot sideways to test the proper seating then reinstall loose boot components. Finally, reinstall the engine cover.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to Replace Spark Plug Wires on Chevrolet Impala? Posted by Customer
    A:
    To install the replacement of the Spark Plug wire, remove the wire from the Spark Plug by twisting the end of the wire boot by 1/2 of a round and pulling solely on the boot. Then, pull off the Spark Plug wire by twisting the boot a 1/2 turn and pull on the boot only. For installation, connect the Spark Plug wire to the Spark Plug. Lastly, with the help of a manometer inspect the Spark Plug wire to ensure that it is well packed and push laterally on each boot to verify their seating and replace any loose boot.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the Spark Plug Wires on Chevrolet SSR? Posted by Customer
    A:
    You should start the Spark Plug wire change by taking off the engine sight shield. Twist each Spark Plug wire 1/2 turn and gently pull on the boot to disconnect it from each Spark Plug. You must twist each Spark Plug wire boot one half turn before removing it by pulling on only the boot. Start installation by attaching the Spark Plug Wires to the Ignition Coil before connecting them to each Spark Plug. If you notice loose mounting boots you should check their seating by gently pushing sideways until each boot fits securely. Reinstall the engine sight shield as the final step.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to Replace Spark Plug Wires on Chevrolet Trailblazer? Posted by Customer
    A:
    Begin the Spark Plug wire replacement process by twisting spark plugs a half turn counterclockwise and removing the boot by pulling only on it. Begin by untwisting the boot of the Spark Plug wire for 1/2 turn and removing it. Wiring up a Spark Plug system starts by attaching the Ignition Coil to the Spark Plug wire which then leads to the Spark Plug insertion. You should end the wire inspection process by checking seat quality through side pressure on each boot before replacing any dislodged boot.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the RH spark plug wires on GMC Yukon? Posted by Customer
    A:
    The replacement process for right side ignition cable(s) starts with removing the right front wheelhouse liner along with extracting these cables through the wheel opening. To separate the ignition cable from the Spark Plug, position the boot at a 1/2 turn and only pull on the boot. For cable removal from the Ignition Coil, apply gentle twisting action to the boot until it turns 1/2 turn before pulling only on the boot. You should connect the ignition cable to both the Ignition Coil before attaching it to the Spark Plug. Check that ignition cables are correctly seated by pushing on each boot from the side. Replace any loose boot placements during reinstallation. Replace the right front wheelhouse liner if you have replaced any right side ignition cable.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to Replace Spark Plug Wires on GMC Sierra 1500? Posted by Customer
    A:
    Begin the Spark Plug wire replacement process by carefully noting their proper placement. Use either a tool or carefully twist the boot 1/2 turn before pulling it from the Spark Plug (1, 2). The next step entails removing Spark Plug wire boots from the Ignition Coil through the same procedure. Next cut open the Spark Plug wire separators so you can pull out the Spark Plug Wires. Reviewing boot to wire fit before installation is essential to maintain Spark Plug wire core integrity and prevent engine misfire or crossfire because improper seating leads to wire damage. For installed old Spark Plug Wires the application of dielectric grease gm pn 12345579 (Canadian PN 10953481) or equivalent inside Spark Plug wire boots must occur. Follow these installation steps: put Spark Plug Wires in place, make sure Spark Plug wire separators get closed, then secure Spark Plug wire boots to each Ignition Coil before attaching (1, 2) each boot to the Spark Plug. For proper Spark Plug wire examination check their route (1, 2, 3, 4, 5, 6) while also checking boot seating by pushing all boots sideways before reboots and fresh dielectric grease application in each boot during installation operations.
    Posted by ChevyPartsGiant Specialist
    Q:
    What is the next step after connecting the wires at the ignition coil for the 2006 Chevrolet Corvette? Posted by Customer
    A:
    Attach each wire to its respective spark plug.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Spark Plug Wires
    Q:
    What is the first step in the installation of spark plug wires for the 2010 Chevrolet Corvette? Posted by Customer
    A:
    Connect the spark plug wires at the ignition coil.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Spark Plug Wires
    Q:
    How do you disconnect the left side spark plug wires for the 2008 Chevrolet Impala? Posted by Customer
    A:
    Disconnect the left side spark plug wires from the spark plugs and the ignition coil.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Spark Plug Wires
    Q:
    What is the next step after applying dielectric grease for the 2009 Chevrolet Silverado 1500? Posted by Customer
    A:
    Install the spark plug wire(s) and close the spark plug wire separators.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Spark Plug Wires
    Q:
    What should you ensure during installation of the spark plug wires for the 2010 GMC Sierra 1500? Posted by Customer
    A:
    Ensure that the boots are properly seated to avoid false impressions of being fully seated.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Spark Plug Wires
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

OEM GM 12579355, Excellent Performance and Perfect Fitment

To ensure reliability, purchase GM part # 12579355 Wire Connector. It is sometimes referred to as GM Spark Plug Wires. Choosing OEM parts is the optimal decision for guaranteeing superior quality and perfect performance. These components undergo stringent quality checks and are carefully constructed to comply with GM's factory specifications, ensuring a smooth installation process.

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