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GMC Sierra 2500 HD Classic Thermostat

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We stock Genuine OEM GMC Thermostat for your GMC Sierra 2500 HD Classic. OEM thermostats are designed and manufactured to fit and function perfectly with your specific make and model of vehicle. They are designed to regulate the flow of coolant through your engine, ensuring that your engine operates at the correct temperature range. A malfunctioning thermostat can cause overheating, poor fuel efficiency, and potential engine damage, so replacing it with an OEM part can ensure optimal performance and reliability. Additionally, using an OEM thermostat can help ensure that the part is covered under the manufacturer's warranty. Manufacturer's Warranty Included. Guaranteed Fit. Experts standing by.

2001-2019 GM - Engine Coolant Thermostat

Part Number: 97241129

Applications: 8 CYLINDER.

Other Names: Thermostat, 16199

Description: Silverado, sierra. 6.6l. 185 degrees. All models. 6.6l. 6.6L, front. Express, savana. 6.6l diesel. 185 degree. Controls the flow of...

Fits:

Chevrolet:
- Express 2500,
- Express 3500,
- Express 4500,
- Silverado 2500 HD,
- Silverado 2500 HD Classic,
- Silverado 3500,
- Silverado 3500 Classic,
- Silverado 3500 HD
GMC:
- Savana 2500,
- Savana 3500,
- Savana 4500,
- Sierra 2500 HD,
- Sierra 2500 HD Classic,
- Sierra 3500,
- Sierra 3500 Classic,
- Sierra 3500 HD

MSRP $71.82

$41.30

2001-2019 GM - Engine Coolant Thermostat

Part Number: 97241130

Applications: 8 CYLINDER.

Other Names: Thermostat, 16200

Description: Silverado, sierra. 6.6l. 180 degrees. All models. 6.6l. 6.6L, rear. Express, savana. 6.6l diesel. 180 degree. Silverado, Sierra 2500 HD....

Fits:

Chevrolet:
- Express 2500,
- Express 3500,
- Express 4500,
- Silverado 2500 HD,
- Silverado 2500 HD Classic,
- Silverado 3500,
- Silverado 3500 Classic,
- Silverado 3500 HD
GMC:
- Savana 2500,
- Savana 3500,
- Savana 4500,
- Sierra 2500 HD,
- Sierra 2500 HD Classic,
- Sierra 3500,
- Sierra 3500 Classic,
- Sierra 3500 HD

MSRP $62.76

$36.09

1996-2007 GM - Engine Coolant Thermostat

Part Number: 12559575

Notes: Included with thermostat housing.

Applications: 8 CYLINDER. 5.0L, 5.7L, 6.2L, 6.5L, 7.4L, 8.1L.

Other Names: Engine Coolant Thermostat, 781

Replaces: 12559269, 12559573

Description: Express, savana. 7.4l. Express, savana. 8.1l. Controls the flow of coolant through your vehicle's radiator to help the engine reach and...

Fits:

Chevrolet:
- Avalanche 2500,
- C2500,
- C3500,
- C3500HD,
- Express 3500,
- K2500 Pickup,
- K3500 Pickup,
- P30,
- Silverado 2500 HD,
- Silverado 2500 HD Classic,
- Silverado 3500,
- Silverado 3500 Classic,
- Suburban 2500,
- Suburban C2500,
- Suburban K2500
GMC:
- C2500 Pickup,
- C3500 Pickup,
- C3500HD,
- K2500 Pickup,
- K3500 Pickup,
- P3500,
- Savana 3500,
- Sierra 2500 HD,
- Sierra 2500 HD Classic,
- Sierra 3500,
- Sierra 3500 Classic,
- Suburban C2500,
- Suburban K2500,
- Yukon XL 2500

MSRP $27.02

$16.89

2001-2016 GM - Engine Coolant Thermostat Housing Gasket

Part Number: 97223686

Other Names: Thermostat Housing Gasket

Description: Lower Housing. 6.6L. Helps seal the gap between the exterior of your vehicle's thermostat housing and the exterior of the engine to help...

Fits:

Chevrolet:
- Express 2500,
- Express 3500,
- Express 4500,
- Silverado 2500 HD,
- Silverado 2500 HD Classic,
- Silverado 3500,
- Silverado 3500 Classic,
- Silverado 3500 HD
GMC:
- Savana 2500,
- Savana 3500,
- Savana 4500,
- Sierra 2500 HD,
- Sierra 2500 HD Classic,
- Sierra 3500,
- Sierra 3500 Classic,
- Sierra 3500 HD

MSRP $10.18

$6.52

2007-2025 GM - 187 Degrees Engine Coolant Thermostat with Seal

Part Number: 89018168

Notes: Includes Water Inlet Seal. Included with thermostat housing. Included with water pump assembly. Includes Coolant Temperature Sensor....

Applications: 5.3L. 4.3L. 6.6L GAS. 6.0L, 6.2L. 8 CYLINDER. 6 CYLINDER 2018-2019. 6.2L W/O SUPERCHARGER.

Other Names: Engine Coolant Thermostat, 15231

Replaces: 12587396, 89017851

Description: Controls the flow of coolant through your vehicle's radiator to help the engine reach and maintain its optimal operating temperature

Fits:

Buick:
- Rainier
Cadillac:
- CTS,
- Escalade,
- Escalade ESV,
- Escalade EXT
Chevrolet:
- Avalanche,
- Camaro,
- Caprice,
- Colorado,
- Corvette,
- Express 1500,
- Express 2500,
- Express 3500,
- Express 4500,
- LCF 3500,
- LCF 3500HG,
- Silverado 1500,
- Silverado 1500 Classic,
- Silverado 1500 HD Classic,
- Silverado 1500 LTD,
- Silverado 2500 HD,
- Silverado 2500 HD Classic,
- Silverado 3500 Classic,
- Silverado 3500 HD,
- SS,
- Suburban,
- Suburban 1500,
- Suburban 2500,
- Suburban 3500 HD,
- Tahoe,
- Trailblazer
GMC:
- Canyon,
- Envoy,
- Savana 1500,
- Savana 2500,
- Savana 3500,
- Savana 4500,
- Sierra 1500,
- Sierra 1500 Classic,
- Sierra 1500 HD Classic,
- Sierra 1500 Limited,
- Sierra 2500 HD,
- Sierra 2500 HD Classic,
- Sierra 3500 Classic,
- Sierra 3500 HD,
- Yukon,
- Yukon XL,
- Yukon XL 1500,
- Yukon XL 2500
Hummer:
- H2,
- H3,
- H3T
Pontiac:
- G8

MSRP $72.25

$41.56

1999-2009 GM - Engine Coolant Thermostat Water Inlet Assembly

Part Number: 12600172

Notes: Includes Thermostat & Gasket. Includes Thermostat And Seal. Included with thermostat unit. Included with Water pump assembly.

Applications: 5.3L. 5.7L. 6.0L, 6.2L. 8 CYLINDER.

Other Names: Engine Coolant Thermostat Kit, 1048

Replaces: 12568911, 12581594

Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors Original equipment parts...

Fits:

Buick:
- Rainier
Cadillac:
- CTS,
- Escalade,
- Escalade ESV,
- Escalade EXT
Chevrolet:
- Avalanche 1500,
- Avalanche 2500,
- Corvette,
- Express 1500,
- Express 2500,
- Express 3500,
- Silverado 1500,
- Silverado 1500 Classic,
- Silverado 1500 HD,
- Silverado 1500 HD Classic,
- Silverado 2500,
- Silverado 2500 HD,
- Silverado 2500 HD Classic,
- Silverado 3500,
- Silverado 3500 Classic,
- Silverado 3500 HD,
- SSR,
- Suburban 1500,
- Suburban 2500,
- Tahoe,
- Trailblazer,
- Trailblazer EXT
GMC:
- Envoy,
- Envoy XL,
- Envoy XUV,
- Savana 1500,
- Savana 2500,
- Savana 3500,
- Sierra 1500,
- Sierra 1500 Classic,
- Sierra 1500 HD,
- Sierra 1500 HD Classic,
- Sierra 2500,
- Sierra 2500 HD,
- Sierra 2500 HD Classic,
- Sierra 3500,
- Sierra 3500 Classic,
- Sierra 3500 HD,
- Yukon,
- Yukon XL 1500,
- Yukon XL 2500
Hummer:
- H2
Pontiac:
- G8,
- GTO

MSRP $78.67

$45.23

2001-2007 GM - Thermostat Bypass Hose

Part Number: 12558969

Other Names: Engine Coolant Bypass Hose

Description: This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors

Fits:

Chevrolet:
- Avalanche 2500,
- C3500HD,
- Express 3500,
- Silverado 2500 HD,
- Silverado 2500 HD Classic,
- Silverado 3500,
- Silverado 3500 Classic,
- Suburban 2500
GMC:
- C3500HD,
- Savana 3500,
- Sierra 2500 HD,
- Sierra 2500 HD Classic,
- Sierra 3500,
- Sierra 3500 Classic,
- Yukon XL 2500

MSRP $33.17

$20.74

2006-2007 GM - Thermostat Bypass Pipe

Part Number: 97354983

Other Names: Engine Coolant Bypass Pipe

Description: 6.6L. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors Original...

Fits:

Chevrolet:
- Express 2500,
- Express 3500,
- Silverado 2500 HD,
- Silverado 2500 HD Classic,
- Silverado 3500,
- Silverado 3500 Classic
GMC:
- Savana 2500,
- Savana 3500,
- Sierra 2500 HD,
- Sierra 2500 HD Classic,
- Sierra 3500,
- Sierra 3500 Classic

Backordered

2001-2016 GM - Thermostat Bypass Pipe Seal

Part Number: 94011602

Other Names: Engine Coolant Pipe O-Ring

Description: Bypass Pipe to Lower Thermostat Housing. 6.6L diesel. This GM Genuine Part is designed, engineered, and tested to rigorous standards and...

Fits:

Chevrolet:
- Express 2500,
- Express 3500,
- Express 4500,
- Silverado 2500 HD,
- Silverado 2500 HD Classic,
- Silverado 3500,
- Silverado 3500 Classic,
- Silverado 3500 HD
GMC:
- Savana 2500,
- Savana 3500,
- Savana 4500,
- Sierra 2500 HD,
- Sierra 2500 HD Classic,
- Sierra 3500,
- Sierra 3500 Classic,
- Sierra 3500 HD

MSRP $4.76

$3.09

2001-2016 GM - Thermostat Bypass Pipe Seal

Part Number: 94011603

Other Names: Engine Coolant Pipe O-Ring

Description: Bypass Pipe to Water Pump. 6.6L diesel. By-pass pipe,lower seal. This GM Genuine Part is designed, engineered, and tested to rigorous...

Fits:

Chevrolet:
- Express 2500,
- Express 3500,
- Express 4500,
- Silverado 2500 HD,
- Silverado 2500 HD Classic,
- Silverado 3500,
- Silverado 3500 Classic,
- Silverado 3500 HD
GMC:
- Savana 2500,
- Savana 3500,
- Savana 4500,
- Sierra 2500 HD,
- Sierra 2500 HD Classic,
- Sierra 3500,
- Sierra 3500 Classic,
- Sierra 3500 HD

MSRP $4.38

$2.85

2007-2025 GM - Water Inlet Seal

Part Number: 12587397

Notes: Included with thermostat housing. Included with water pump assembly. Included with water pump. Part cannot be reused/reinstalled.

Applications: 5.3L. 4.3L. 6.0L. 4.2L. 5.5L. 7.0L. 6.6L GAS. 8 CYLINDER. 6.2L W/O SUPERCHARGER.

Other Names: Thermostat Seal

Description: Helps close and prevent coolant from leaking out of your vehicle's cooling system components to maintain the proper engine temperature...

Fits:

Buick:
- Rainier
Cadillac:
- CT6,
- CTS,
- Escalade,
- Escalade ESV,
- Escalade EXT
Chevrolet:
- Avalanche,
- Camaro,
- Caprice,
- Colorado,
- Corvette,
- Express 1500,
- Express 2500,
- Express 3500,
- Express 4500,
- LCF 3500,
- LCF 3500HG,
- Silverado 1500,
- Silverado 1500 Classic,
- Silverado 1500 HD Classic,
- Silverado 1500 LTD,
- Silverado 2500 HD,
- Silverado 2500 HD Classic,
- Silverado 3500 Classic,
- Silverado 3500 HD,
- SS,
- Suburban,
- Suburban 1500,
- Suburban 2500,
- Suburban 3500 HD,
- Tahoe,
- Trailblazer
GMC:
- Canyon,
- Envoy,
- Savana 1500,
- Savana 2500,
- Savana 3500,
- Savana 4500,
- Sierra 1500,
- Sierra 1500 Classic,
- Sierra 1500 HD Classic,
- Sierra 1500 Limited,
- Sierra 2500 HD,
- Sierra 2500 HD Classic,
- Sierra 3500 Classic,
- Sierra 3500 HD,
- Yukon,
- Yukon XL,
- Yukon XL 1500,
- Yukon XL 2500
Hummer:
- H2,
- H3,
- H3T

MSRP $10.84

$6.94

2016-2022 GM - Engine Coolant Thermostat Housing Gasket

Part Number: 12650486

Notes: Included with thermostat housing.

Applications: 2.8L Diesel.

Other Names: Engine Coolant Thermostat Housing Seal

Description: 2.8L turbo diesel. Express, savana. Canyon, Colorado. This GM Genuine Part is designed, engineered, and tested to rigorous standards and...

Fits:

Chevrolet:
- Colorado,
- Express 2500,
- Express 3500
GMC:
- Canyon,
- Savana 2500,
- Savana 3500

MSRP $27.63

$17.26

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