How to replace the thermostat on Chevrolet Express 2500?

In order to replace the Thermostat one should remove the air cleaner, the duct assembly, partially drain the coolant, remove the coolant recovery reservoir. Remove the Thermostat Housing to Radiator Hose, bolts attaching the Thermostat Housing to the Thermostat, and take off Thermostat Housing. Next, take off the Thermostat and clean gasket mating face. For the installation, install the Thermostat first, followed by attaching the Thermostat Housing on the Intake Manifold in place with bolts that should be tightened to 25 nm (18 ft. Lbs.). Reconnect the Radiator Hose to the Thermostat Housing, reinstall the coolant recovery reservoir, and replace the air cleaner and duct. Refill the cooling system, bleed the air from the system, and lastly check for coolant leakage in the Thermostat Housing and gasket.

OEM Chevrolet Express 2500 Thermostat

Engine Coolant Thermostat

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13 Thermostats found

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Chevrolet Express 2500 Thermostat Part Number: 97241129
$36.18 MSRP: $71.82
You Save: $35.64 (50%)
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Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2016 Chevrolet Express 2500 | Base, LS, LT | 8 Cyl 6.6 L DIESEL
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Chevrolet Express 2500 Thermostat Part Number: 12632948
$29.83 MSRP: $56.02
You Save: $26.19 (47%)
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Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature
- Replaces: 12257859, 12563335, 12557859, 12597583, 12551472
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2006 Chevrolet Express 2500 | Base, LS | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L BI-FUEL, 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS
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Chevrolet Express 2500 Thermostat Part Number: 97241130
$33.42 MSRP: $62.76
You Save: $29.34 (47%)
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Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2016 Chevrolet Express 2500 | Base, LS, LT | 8 Cyl 6.6 L DIESEL
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Chevrolet Express 2500 Thermostat Part Number: 89018168
$36.41 MSRP: $72.25
You Save: $35.84 (50%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Engine Coolant Thermostat; Thermostat, Engine Coolant Temperature
- Replaces: 89017851
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2023 Chevrolet Express 2500 | Base, LS, LT | 6 Cyl 4.3 L FLEX, 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L GAS
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Chevrolet Express 2500 Thermostat Unit Part Number: 12600171
$24.02 MSRP: $45.12
You Save: $21.10 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature; Thermostat
- Replaces: 12581595
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2007 Chevrolet Express 2500 | Base, LS, LT | 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
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Chevrolet Express 2500 Thermostat Housing Part Number: 24588515
$84.41 MSRP: $167.54
You Save: $83.13 (50%)
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Product Specifications
- Other Name: Thermostat Assembly-Engine Coolant; Thermostat Housing Cover; Thermostat Unit; Thermostat; Thermostat, Engine Coolant Temperature
- Replaces: 12642691
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2022 Chevrolet Express 2500 | Base, LS, LT | 4 Cyl 2.8 L DIESEL
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Chevrolet Express 2500 Thermostat Part Number: 19420815
$37.26 MSRP: $73.96
You Save: $36.70 (50%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat Kit, Engine Coolant Temperature
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2022-2024 Chevrolet Express 2500 | Base, LS, LT | 6 Cyl 4.3 L FLEX, 6 Cyl 4.3 L GAS, 8 Cyl 6.6 L GAS
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Chevrolet Express 2500 Thermostat Part Number: 12559336
$35.26 MSRP: $66.22
You Save: $30.96 (47%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature
- Replaces: 12554977
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2002 Chevrolet Express 2500 | Base, LS | 8 Cyl 6.5 L DIESEL
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Chevrolet Express 2500 Thermostat Housing Part Number: 97383583
Product Specifications
- Other Name: Housing-Engine Coolant Thermostat; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
- Replaces: 97222428
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 Chevrolet Express 2500 | Base, LS, LT | 8 Cyl 6.6 L DIESEL
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Chevrolet Express 2500 Thermostat Housing Part Number: 12553405
Product Specifications
- Other Name: Housing, Engine Coolant Thermostat; Thermostat Housing Cover
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2002 Chevrolet Express 2500 | Base, LS | 8 Cyl 6.5 L DIESEL
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Chevrolet Express 2500 Thermostat Housing Part Number: 97383685
$228.06 MSRP: $358.84
You Save: $130.78 (37%)
Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2008 Chevrolet Express 2500 | Base, LS, LT | 8 Cyl 6.6 L DIESEL
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Chevrolet Express 2500 Thermostat Housing Part Number: 98082690
Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009 Chevrolet Express 2500 | Base | 8 Cyl 6.6 L DIESEL
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Chevrolet Express 2500 Thermostat Housing Part Number: 12642719
$110.58 MSRP: $197.45
You Save: $86.87 (44%)
Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
- Replaces: 12637657
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2016 Chevrolet Express 2500 | Base | 8 Cyl 6.6 L DIESEL

Chevrolet Express 2500 Thermostat

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Chevrolet Express 2500 Thermostat Parts and Q&A

Thermostat
12632948
Q: How to replace the thermostat on Chevrolet Express 2500?
A:
In order to replace the Thermostat one should remove the air cleaner, the duct assembly, partially drain the coolant, remove the coolant recovery reservoir. Remove the Thermostat Housing to Radiator Hose, bolts attaching the Thermostat Housing to the Thermostat, and take off Thermostat Housing. Next, take off the Thermostat and clean gasket mating face. For the installation, install the Thermostat first, followed by attaching the Thermostat Housing on the Intake Manifold in place with bolts that should be tightened to 25 nm (18 ft. Lbs.). Reconnect the Radiator Hose to the Thermostat Housing, reinstall the coolant recovery reservoir, and replace the air cleaner and duct. Refill the cooling system, bleed the air from the system, and lastly check for coolant leakage in the Thermostat Housing and gasket.