Menu
×
Search Bar
Search by Part Number, Part Name, or Vehicle
My Garage
Cart
Help Center Contact Us
Make sure this part fits

GM 12559826
Check Valve

2000-2004 Cadillac DeVille

Customer Questions & Expert Answers (8)
GM 12559826 Check Valve
  • Part Description
    Valve Assembly-Secondary Air Injection Check; Diverter Valve
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits

  • 12559826 Check Valve is Ref No. 26 in the diagram below

    2002 Cadillac DeVille Check Valve Diagram for 12559826
    The diagram listed above is for your reference. View diagram for your vehicle

    Related Parts for 12559826

  • Vehicle Fitment

    Year Make Model Trim Engine
    2000-2004 Cadillac DeVilleBase, DHS, DTS, Protection Series8 Cyl 4.6 L GAS
    Warning: California's Proposition 65

  • Customer Questions & Expert Answers

    Q:
    Is this 12559826 designed for my car? Posted by ChevyPartsGiant Specialist
    A:
    Please Select Your Vehicle model to see if part number 12559826 is suitable before ordering.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the Air Inject Check Valve for Bank 1 on Cadillac DeVille? Posted by Customer
    A:
    The first step to replace the bank 1 secondary air injection (AIR) shut-off valve begins with raising the vehicle. Start by raising the vehicle before removing the two nuts holding the outlet pipe to the Exhaust Manifold. Lower the vehicle afterward. Extract the bank 1 intermediate pipe/hose from its position on the bank 1 air shut-off valve after disconnecting it from the valve then eliminate both vacuum lines attached to it. Remove the three engine securing nuts of the bank 1 air outlet pipe's air shut-off valve followed by removing the valve from the outlet pipe. The installation of bank 1 air shut-off valve requires connection of this component with a new gasket to the bank 1 air outlet pipe while strictly following fastener notice in service precautions. Secure the bank 1 air shut-off valve to the engine with three nuts which need to be tightened to 9 n.m (80 lb in). The vacuum lines require reinstallment while returning the bank 1 air intermediate pipe/hose and clamp to connect with the bank 1 air shut-off valve system. Attach the two securing nuts between the bank 1 air outlet pipe and Exhaust Manifold at 9 n.m torque, repeat for the opposite side before dropping the vehicle.
    Posted by ChevyPartsGiant Specialist
    Q:
    What is the next step after disconnecting the AIR vacuum hoses for the 2000 Cadillac DeVille? Posted by Customer
    A:
    Remove the nuts that hold the AIR check valve to the exhaust manifold pipe and take out the rear AIR check valve.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Air Inject Check Valve
    Q:
    What should be done after removing the Air Cleaner Assembly for the 2001 Cadillac DeVille? Posted by Customer
    A:
    Loosen and lower the pinch clamp connecting the bank 2 intermediate pipe/hose to the bank 2 shut-off valve, then disconnect the hose from the shut-off valve.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Air Inject Check Valve
    Q:
    What should be done after securing the new AIR shut-off valve for the 2004 Cadillac DeVille? Posted by Customer
    A:
    Connect the intermediate hose to the AIR shut-off valve and position the pinch clamp.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Air Inject Check Valve
    Q:
    What is the first step in the installation process for the 2002 Cadillac DeVille? Posted by Customer
    A:
    Connect the new bank 1 AIR shut-off valve with a new gasket to the bank 1 AIR outlet pipe.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Air Inject Check Valve
    Q:
    How many bolts need to be removed to take off the AIR shut-off valve for the 2003 Cadillac DeVille? Posted by Customer
    A:
    Remove the three bolts securing the AIR shut-off valve to the engine.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Air Inject Check Valve
    Q:
    What should be done after removing the nuts from the outlet pipe for the 2004 Cadillac DeVille? Posted by Customer
    A:
    Remove the 3 bolts securing the AIR shut-off valve to the cam cover, then take out the AIR shut-off valve, outlet pipe, and bracket from the engine, discarding the gasket.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Air Inject Check Valve
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

OEM GM Check Valve 12559826 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 12559826 Check Valve is available in the market under the name GM Air Inject Check Valve, Diverter Valve, Secondary Air Injection Check Valve. This genuine product has a full warranty coverage from the manufacturer available at all authorized GM dealers throughout the United States. This part 12559826 Check Valve fits certain Cadillac DeVille models.
The original GM component designated by manufacturer part number 12559826 maintains top performance when functioning as the Valve Assembly-Secondary Air Injection Check; Diverter Valve unit. The component 12559826 is constructed from durable material and its dimensions span 15.1 x 8.3 x 7.1 inches while weighing 2.20 Pounds. The Direct Replacement component is ready in New condition to ensure full compatibility with your vehicle system. This component receives the designation of Valve, Emission Control System. The part 12559826 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.
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.