Make sure this part fits

GM 12578647
Heat Shield

2007-2012 GM

Customer Questions & Expert Answers (10)
GM 12578647 Heat Shield
GM 12578647 Heat Shield
  • Part Description
    Shield, Exhaust Manifold; Exhaust Heat Shield
  • Manufacturer
    General Motors
Make sure this part fits
$51.37 MSRP: $76.44
You Save: $25.07 (33%)
Currently Unavailable

Due to manufacturer supply shortage, this item isn't currently available for ordering.

  • Vehicle Fitment

    Year Make Model Trim Engine
    2007-2012 Chevrolet ColoradoLS, LT, WT5 Cyl 3.7 L GAS
    2007-2012 GMC CanyonSLE, SLT, WT5 Cyl 3.7 L GAS
    2007-2008 Hummer H3Base, X5 Cyl 3.7 L GAS
    Warning: California's Proposition 65
  • Customer Questions & Expert Answers

    Q:
    Is this 12578647 designed for my car? Posted by ChevyPartsGiant Specialist
    A:
    Please Select Your Vehicle model to see if part number 12578647 is suitable before ordering.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the exhaust heat shield on a 2.9L engine on Chevrolet Colorado? Posted by Customer
    A:
    First remove the air cleaner outlet duct together with the air cleaner assembly when replacing a 2.9l engine Exhaust Manifold heat shield. According to m30 specifications the transmission filler tube bracket nut needs to be removed from the a.i.r. Adapter until further installation. The heat shield of the Exhaust Manifold needs you to remove first the heated Oxygen Sensor (HO2S) from its position on the Exhaust Manifold after which you detach the three nuts keeping the heat shield on the Exhaust Manifold to finally take off the heat shield. Install the new heat shield to the Exhaust Manifold while using gm p/n 12371386 or canadian p/n 993128 anti-seize on the heat shield nuts. Apply anti-seize gm p/n 12371386 (Canadian P/N 993128) to the heat shield nuts before tightening them to 10 n.m (89 lb in). The procedure requires the ho2s to be reinstalled onto the Exhaust Manifold after the transmission filler tube must be repositioned to the a.i.r. Adapter when this step was conducted. Secure the bracket nut with a torque of 12.5 n.m (111 lb in). Reinstall both the air cleaner assembly followed by the air cleaner outlet duct.
    Posted by ChevyPartsGiant Specialist
    Q:
    What is the torque specification for tightening the nuts for the 2010 Chevrolet Colorado? Posted by Customer
    A:
    Tighten them to 9 Nm (80 lb in).
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Exhaust Heat Shield
    Q:
    What is the final step in the process for the 2010 Chevrolet Colorado? Posted by Customer
    A:
    Reinstall the air cleaner assembly and the air cleaner outlet duct.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Exhaust Heat Shield
    Q:
    How do you remove the catalytic converter heat shield for the 2007 Chevrolet Colorado? Posted by Customer
    A:
    Remove the 5 nuts securing the heat shield to the floor panel and take off the heat shield.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Exhaust Heat Shield
    Q:
    How do you install the new exhaust muffler heat shield for the 2009 Chevrolet Colorado? Posted by Customer
    A:
    Position the new exhaust muffler heat shield onto the floor panel studs and install the 3 nuts to secure it.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Exhaust Heat Shield
    Q:
    What should be done after removing the heat shield for the 2008 Chevrolet Colorado? Posted by Customer
    A:
    Position the new heat shield onto the exhaust manifold and apply anti-seize GM P/N 12371386 (Canadian P/N 993128) to the heat shield nuts before installing them.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Exhaust Heat Shield
    Q:
    How do you secure the new heat shield for the 2010 GMC Canyon? Posted by Customer
    A:
    Install the 5 nuts to secure the heat shield to the floor panel, tightening them to 9 Nm (80 lb in).
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Exhaust Heat Shield
    Q:
    What should you do after tightening the heat shield nuts for the 2007 GMC Canyon? Posted by Customer
    A:
    Lower the vehicle.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Exhaust Heat Shield
    Q:
    What is the first step to replace the exhaust manifold heat shield on the LLV (2.9L) for the 2009 GMC Canyon? Posted by Customer
    A:
    First, remove the air cleaner outlet duct and the air cleaner assembly.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Exhaust Heat Shield
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

OEM GM Heat Shield 12578647 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 12578647 Heat Shield is available in the market under the name GM Exhaust Heat Shield. This genuine product has a full warranty coverage from the manufacturer available at all authorized GM dealers throughout the United States. This part 12578647 Heat Shield fits certain Chevrolet Colorado models, as well as GMC Canyon. Additionally, it is compatible with Hummer H3 models.
The original GM component designated by manufacturer part number 12578647 maintains top performance when functioning as the Shield, Exhaust Manifold; Exhaust Heat Shield unit. The component 12578647 is constructed from durable material and its dimensions span 22.2 x 16.3 x 5.4 inches while weighing 2.20 Pounds. The Direct Replacement component is ready in New condition to ensure full compatibility with your vehicle system. The part 12578647 has available replacement options. 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.
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