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GM 12559575
Thermostat

1996-2007 GM

Customer Questions & Expert Answers (10)
GM 12559575 Thermostat
GM 12559575 Thermostat
GM 12559575 Thermostat
GM 12559575 Thermostat
GM 12559575 Thermostat
GM 12559575 Thermostat
  • Part Description
    Thermostat, Engine Coolant Temperature
  • Replaces
    12559269, 12559573, 10210450
  • Manufacturer
    General Motors
Make sure this part fits
$17.99 MSRP: $33.78
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  • 12559575 Thermostat is Ref No. 20 in the diagram below

    2002 GMC Yukon XL 2500 Thermostat Diagram for 12559575
    The diagram listed above is for your reference. View diagram for your vehicle

    Related Parts for 12559575

  • Vehicle Fitment

    Year Make Model Trim Engine
    2002-2006 Chevrolet Avalanche 2500Base, LS, LT8 Cyl 8.1 L GAS
    1996-2000 Chevrolet C2500Base, Cheyenne, LS, Silverado, WT8 Cyl 7.4 L GAS
    1996-1999 Chevrolet C2500 SuburbanBase, LS, LT8 Cyl 7.4 L GAS
    1996-2000 Chevrolet C3500Base, Cheyenne, LS, Silverado8 Cyl 7.4 L GAS
    1996-2002 Chevrolet Express 3500Base, LS8 Cyl 7.4 L GAS, 8 Cyl 8.1 L GAS
    1996-2000 Chevrolet K2500Base, Cheyenne, LS, Silverado, WT8 Cyl 7.4 L GAS
    1996-1999 Chevrolet K2500 SuburbanBase, LS, LT8 Cyl 7.4 L GAS
    1996-2000 Chevrolet K3500Base, Cheyenne, LS, Silverado8 Cyl 7.4 L GAS
    1996-1999 Chevrolet P30Base8 Cyl 7.4 L GAS
    2001-2006 Chevrolet Silverado 2500 HDBase, LS, LT, WT8 Cyl 8.1 L GAS
    View More
    Warning: California's Proposition 65

  • Customer Questions & Expert Answers

    Q:
    Is this 12559575 designed for my car? Posted by ChevyPartsGiant Specialist
    A:
    Please Select Your Vehicle model to see if part number 12559575 is suitable before ordering.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to service and repair the thermostat on Chevrolet Express 3500? Posted by Customer
    A:
    To service and repair the Thermostat, proceed to remove the air cleaner and the ducts assembly. Drain the coolant partially and then take off the coolant recovery reservoir. Remove the bolts that hold the Thermostat Housing to the Thermostat and unclip the Radiator Hose from the case of the Thermostat Housing so that you may then unveil the Thermostat Housing and the Thermostat itself. Before replacing the Thermostat with a new one, clean the gasket mating surfaces. Next, screw the Thermostat Housing to the Intake Manifold with bolts and tighten them to 25nm (180 inches-1/2 lb.). Reattaching the Radiator Hose onto the Thermostat Housing, replacing the coolant recovery reservoir, and reinstalling the air cleaner and duct assembly. Refill the cooling system and bleed air from it, check the Thermostat Housing and gasket for leaks of coolant.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to service and repair the thermostat on Chevrolet K3500? Posted by Customer
    A:
    To carry out service and repair the Thermostat, follow the removal of coolant when the Radiator coolant level is beneath the thermostats. On the 5.7l engine, remove the bolts or studs, coolant outlet, Thermostat from the housing, and gasket if necessary. For the 7.4l, in the same way, demolish the bolts or studs and the coolant outlet, Thermostat from the casing, and if required gasket. Clean the Thermostat housing and the sealing surface of the cooling outlet. For 5.7l install the Thermostat into the housing, the gasket if required, and the coolant outlet, then install the bolts or studs and tighten it to 28 nm (21 ft. Lbs.). For the 7.4l, place the Thermostat into the housing along with any gasket and the coolant outlet, then place the bolts or studs and tighten them to 37 nm (27 ft. Lbs.) nsdictionary. Refill the coolant to the cooling system again and run the engine untill the Radiator upper hose gets hot indicating that the thermostate is open. With the engine idling, fill up the Radiator to the bottom of the filler neck and install the Radiator Cap with the arrows pointing to the overflow tube. Lastly, check for leaks in the cooling system.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the thermostat housing on 4.8L, 5.3L, and 6.0L engines on Chevrolet Silverado 3500? Posted by Customer
    A:
    Replacing the Thermostat Housing on 4.8l, 5.3l, and 6.0l engines starts by removing the radiator outlet hose followed by taking out the Water Pump inlet bolts to detach the Water Pump inlet and Thermostat while noting the Thermostat's requirement for replacement only as an assembly with the Water Pump inlet. Installation requires placing the Thermostat and Thermostat Housing onto the Water Pump in accordance with service precautions fastener notice. After securing the Thermostat Housing bolts with 15 nm (11 ft. Lbs.) torque, reinstall the radiator outlet hose.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to service and repair the thermostat on GMC C3500? Posted by Customer
    A:
    To carry out service and repair the Thermostat, follow the removal of coolant when the Radiator coolant level is beneath the thermostats. On the 5.7l engine, remove the bolts or studs, coolant outlet, Thermostat from the housing, and gasket if necessary. For the 7.4l, in the same way, demolish the bolts or studs and the coolant outlet, Thermostat from the casing, and if required gasket. Clean the Thermostat housing and the sealing surface of the cooling outlet. For 5.7l install the Thermostat into the housing, the gasket if required, and the coolant outlet, then install the bolts or studs and tighten it to 28 nm (21 ft. Lbs.). For the 7.4l, place the Thermostat into the housing along with any gasket and the coolant outlet, then place the bolts or studs and tighten them to 37 nm (27 ft. Lbs.) nsdictionary. Refill the coolant to the cooling system again and run the engine untill the Radiator upper hose gets hot indicating that the thermostate is open. With the engine idling, fill up the Radiator to the bottom of the filler neck and install the Radiator cap with the arrows pointing to the overflow tube. Lastly, check for leaks in the cooling system.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the thermostat on GMC Savana 3500? Posted by Customer
    A:
    First remove the air cleaner along with the duct assembly followed by draining partial coolant volume before removing the coolant recovery reservoir. Start by disconnecting the Radiator Hose from the Thermostat Housing then remove the bolts that connect the Thermostat Housing to the Thermostat before taking out the Thermostat Housing. Clean up the Thermostat Housing gasket mating places before you remove the Thermostat. Start with Thermostat installation before you connect the Thermostat Housing to the Intake Manifold. With 25 nm applied torque tighten bolts securely into the housing. You must install the Radiator Hose to the Thermostat Housing followed by returning the coolant recovery reservoir and the air cleaner with the duct. Replace the cooling system fluid before checking for air in the lines and assessing the condition of both Thermostat Housing and gasket for leaks.
    Posted by ChevyPartsGiant Specialist
    Q:
    How to replace the thermostat on Chevrolet Suburban 2500? Posted by Customer
    A:
    Initiating a thermostat replacement involves draining the cooling system first. Proceed by relocating the clamp securing the inlet hose to the water outlet before removing that hose from its position. Start by taking off two bolts securing the water outlet then remove both the water outlet and thermostat . Begin setup by setting the thermostat in place followed by installing the water outlet. The fastener notice must be followed during installation while torqueing the water outlet bolts to 30 Nm (22 ft. lbs.). Reinstall the inlet hose to the water outlet before clamping the inlet hose in place at the water outlet. Finally, fill the cooling system.
    Posted by ChevyPartsGiant Specialist
    Q:
    What is the next step after removing the inlet hose for the 2006 Chevrolet Avalanche 2500? Posted by Customer
    A:
    Remove the two water outlet bolts and take off the water outlet before removing the thermostat.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Thermostat
    Q:
    What is the next step after removing the inlet hose for the 2006 GMC Sierra 3500? Posted by Customer
    A:
    Remove the two water outlet bolts and take off the water outlet before removing the thermostat.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Thermostat
    Q:
    What do you do after removing the old thermostat for the 2007 GMC Sierra 3500 Classic? Posted by Customer
    A:
    Install the new thermostat.
    Posted by ChevyPartsGiant Specialist
    See expert answers on similar Thermostat
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

OEM GM Thermostat 12559575 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 12559575 Thermostat is available in the market under the name GM Thermostat. This genuine product has a full warranty coverage from the manufacturer available at all authorized GM dealers throughout the United States. This part 12559575 Thermostat fits certain Chevrolet Silverado 2500 HD, C2500, C3500 models, as well as GMC Sierra 2500 HD, C2500, C3500 models.
The original GM component designated by manufacturer part number 12559575 maintains top performance when functioning as the Thermostat, Engine Coolant Temperature unit. The component 12559575 is constructed from durable material and its dimensions span 3.3 x 2.2 x 2.1 inches while weighing 0.50 Pounds. The Direct Replacement component is ready in New condition to ensure full compatibility with your vehicle system. The part 12559575 has available replacement options 12559269, 12559573, 10210450. 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.