How to replace the thermostat on Chevrolet Colorado?

In order to replace the Thermostat drain off the cooling system and lift the vehicle enough to expose the Thermostat Housing through a wheelhouse. Remove the liner of the left wheelhouse and next use the hose clamp pliers ( J 38185 ) to remove the radiator inlet hose from the Thermostat Housing. Then, you should unscrew the Thermostat Housing bolts and take the Thermostat Housing away from the engine block. Check and clean both the Thermostat Housing and sealing surface of the engine block. Return the Thermostat Housing to the engine block and then bolt it with the bolts applying 10 n.m (89 lb in). Use the hose clamp pliers (J 38185) to reconnect the radiator inlet hose to the Thermostat Housing, install the left wheelhouse liner, lower the vehicle, top up the cooling system, and finally inspect all sealing surfaces for leaks following the start-up of the engine.

OEM Chevrolet Colorado Thermostat

Engine Coolant Thermostat

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Chevrolet Colorado 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:
- 2009-2012 Chevrolet Colorado | LT | 8 Cyl 5.3 L GAS
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Chevrolet Colorado Thermostat Housing Part Number: 12678784
$49.62 MSRP: $88.60
You Save: $38.98 (44%)
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Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Thermostat Gasket; Thermostat Unit; Housing, Engine Coolant Thermostat
- Replaced by: 12741007
- Replaces: 12673280, 12647180, 12670209
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2022 Chevrolet Colorado | LT, WT, Z71, ZR2 | 6 Cyl 3.6 L GAS
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Chevrolet Colorado Thermostat Housing Part Number: 12622316
$78.04 MSRP: $160.38
You Save: $82.34 (52%)
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Product Specifications
- Other Name: Housing, Engine Coolant Thermostat; Thermostat Housing Cover; Water Outlet
- Replaces: 12620113, 12579956
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2012 Chevrolet Colorado | Base, LS, LT, Sport, Sport LS, WT, Z71, Z71 LS, Z85, Z85 LS | 4 Cyl 2.8 L GAS, 4 Cyl 2.9 L GAS, 5 Cyl 3.5 L GAS, 5 Cyl 3.7 L GAS
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Chevrolet Colorado 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:
- 2016-2022 Chevrolet Colorado | LT, WT, Z71, ZR2 | 4 Cyl 2.8 L DIESEL
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Chevrolet Colorado Thermostat Housing Part Number: 12698362
$73.31 MSRP: $150.66
You Save: $77.35 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Housing, Engine Coolant Thermostat; Thermostat Housing Cover
- Replaces: 12681135, 12660976
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2015-2016 Chevrolet Colorado | LT, WT, Z71 | 6 Cyl 3.6 L GAS

Chevrolet Colorado Thermostat

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The Chevrolet Colorado uses a thermostat to regulate temperatures of its engine and to maintain these temperatures within a certain range. Found on the vicinity of the radiator, the thermostat is responsible for controlling the temperature of the engine by opening to let water into the engine cooling jackets so as to avoid overheating. If the thermostat is faulty, it can cause a problem like overheating of the engines and severe damage. The Chevrolet Colorado which came to replace the S-10 series has different body styles and mechanicals; the gasoline inline-4 engines with optional manual/automatic transmission. Even today, the Colorado continued to use mechanical thermostat, to be specific, wax pellet thermostats that simply expand and contract in relation to heat, making them good in controlling engine temperature. This mechanism is therefore very useful in the maintenance of the performance and durability of the vehicle.

Chevrolet Colorado Thermostat Parts and Q&A

Thermostat Housing
12622316
Q: How to replace the thermostat on Chevrolet Colorado?
A:
In order to replace the Thermostat drain off the cooling system and lift the vehicle enough to expose the Thermostat Housing through a wheelhouse. Remove the liner of the left wheelhouse and next use the hose clamp pliers ( J 38185 ) to remove the radiator inlet hose from the Thermostat Housing. Then, you should unscrew the Thermostat Housing bolts and take the Thermostat Housing away from the engine block. Check and clean both the Thermostat Housing and sealing surface of the engine block. Return the Thermostat Housing to the engine block and then bolt it with the bolts applying 10 n.m (89 lb in). Use the hose clamp pliers (J 38185) to reconnect the radiator inlet hose to the Thermostat Housing, install the left wheelhouse liner, lower the vehicle, top up the cooling system, and finally inspect all sealing surfaces for leaks following the start-up of the engine.