How do I diagnose and replace a thermostat in the cooling system for Chevrolet Colorado and GMC Canyon?

Before assuming the thermostat is bad, check the coolant level, the drive belt tension, and the temperature gauge operation. Start disconnecting the cable from the negative terminal of the battery and draining the cooling system. Then, locate the thermostat housing by following the lower radiator hose to the engine. Remove the bolts and detach the thermostat housing, cleaning the mating surfaces on the engine and the housing. Install a new O-ring in the housing and reattach it to the engine, tightening the bolts to the proper torque specifications. Finally, refill the cooling system, check for leaks, and repeat the steps to ensure the repairs have resolved the previous problem(s).

Genuine Chevrolet Colorado Thermostat

Engine Coolant Thermostat

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6 Thermostats found

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Chevrolet Colorado Housing Assembly, Eng Cool Therm
Part Number: 12678784
$73.37 MSRP: $154.14
You Save: $80.77 (53%)
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Product Specifications
- Replaces: 12647180, 12670209, 12673280
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017-2021 Chevrolet Colorado | CREW CAB - 5'2" BOX, CREW CAB - 6'2" BOX, CREW CAB LS - 6'2" BOX, CREW CAB LT - 6'2" BOX, EXTENDED CAB - 6'2" BOX, LS CREW CAB - 5'2" BOX, LS EXTENDED CAB - 6'2" BOX, LT CREW CAB - 5'2" BOX, LT EXTENDED CAB - 6'2" BOX | 6 Cyl 3.6L
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Chevrolet Colorado Thermostat Kit,Engine Coolant
Part Number: 89018168
$36.27 MSRP: $73.55
You Save: $37.28 (51%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: THERMOSTAT KIT, Engine Coolant Temperature; Thermostat
- Replaces: 89017851
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2012 Chevrolet Colorado | CREW CAB, EXTENDED CAB, EXTENDED LENGTH, PICKUP | 8 Cyl 5.3L
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Chevrolet Colorado Housing,Engine Coolant Thermostat
Part Number: 12622316
$79.55 MSRP: $149.08
You Save: $69.53 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: HOUSING, Engine Coolant Thermostat; Thermostat Housing, Water Outlet
- Replaces: 12579956, 12620113
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2012 Chevrolet Colorado | CREW CAB, EXTENDED CAB, EXTENDED LENGTH, PICKUP | 4 Cyl 2.8L, 4 Cyl 2.9L, 5 Cyl 3.5L, 5 Cyl 3.7L
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Chevrolet Colorado Housing Assembly, Engine Coolant Thermostat
Part Number: 12650241
$66.20 MSRP: $139.08
You Save: $72.88 (53%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: HOUSING, Engine Coolant Thermostat
- Replaced by: 25201448
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2015-2021 Chevrolet Colorado | CREW CAB - 5'2" BOX, EXTENDED CAB - 6'2" BOX, LS CREW CAB - 5'2" BOX, LS EXTENDED CAB - 6'2" BOX, LT CREW CAB - 5'2" BOX, LT EXTENDED CAB - 6'2" BOX | 4 Cyl 2.5L
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Chevrolet Colorado HOUSING ASM,ENG COOL THERM
Part Number: 12698362
$50.61 MSRP: $154.44
You Save: $103.83 (68%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat Housing
- Replaces: 12660976, 12681135
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2015-2016 Chevrolet Colorado | CREW CAB - 5'2" BOX, CREW CAB - 6'2" BOX, CREW CAB LS - 6'2" BOX, CREW CAB LT - 6'2" BOX, EXTENDED CAB - 6'2" BOX, LS CREW CAB - 5'2" BOX, LS EXTENDED CAB - 6'2" BOX, LT CREW CAB - 5'2" BOX, LT EXTENDED CAB - 6'2" BOX | 6 Cyl 3.6L
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Chevrolet Colorado Thermostat Assembly, Eng Cool
Part Number: 24588515
$84.76 MSRP: $152.04
You Save: $67.28 (45%)
ADD TO CART
Product Specifications
- Other Name: Thermostat, Thermostat Housing, Thermostat Unit
- Replaces: 12642691
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2016-2021 Chevrolet Colorado | CREW CAB - 5'2" BOX, CREW CAB - 6'2" BOX, CREW CAB LS - 6'2" BOX, CREW CAB LT - 6'2" BOX, EXTENDED CAB - 6'2" BOX, LS CREW CAB - 5'2" BOX, LS EXTENDED CAB - 6'2" BOX, LT CREW CAB - 5'2" BOX, LT EXTENDED CAB - 6'2" BOX | 4 Cyl 2.8L Diesel

Chevrolet Colorado Thermostat Parts Questions & Experts Answers

Thermostat Kit,Engine Coolant
89018168
Q: How do I diagnose and replace a thermostat in the cooling system for Chevrolet Colorado and GMC Canyon?
A: Before assuming the thermostat is bad, check the coolant level, the drive belt tension, and the temperature gauge operation. Start disconnecting the cable from the negative terminal of the battery and draining the cooling system. Then, locate the thermostat housing by following the lower radiator hose to the engine. Remove the bolts and detach the thermostat housing, cleaning the mating surfaces on the engine and the housing. Install a new O-ring in the housing and reattach it to the engine, tightening the bolts to the proper torque specifications. Finally, refill the cooling system, check for leaks, and repeat the steps to ensure the repairs have resolved the previous problem(s).