How to replace the engine coolant thermostat in LLV and LLR engines (2.9L, 3.7L) on Chevrolet Colorado?

To replace the engine-coolant Thermostat in vehicles with llv and llr engines (2.9L, 3.7L), start with draining the cooling system. Lift and stabilize the vehicle enough to reach the Thermostat Housing wheezing through the wheelhouse, then pop the leftover wheelhouse liner. It is recommended to remove the radiator inlet hose from the Thermostat by using hose clamp pliers, i.e., a j 38185 hose clamp pliers. Secondly, you need to remove the Thermostat Housing bolts and loosen the Thermostat Housing from the engine block. Clean and inspect the engine block's sealing surface and the Thermostat Housing. For installation, place the Thermostat Housing onto the engine block while making sure the Thermostat Housing bolts are properly installed and tightened immediately to 10 nm (89 lb in). Replace the radiator inlet hose using the j 38185 hose clamp pliers, replace the left wheelhouse liner, and lower the vehicle. Lastly, cool down the system and check all the sealing points for leakages after the ignition of the engine.

How to Ensure Proper Thermostat Installation on Chevrolet S10?

Start the Thermostat replacement process by draining part of the cooling system liquid. First detach the air cleaner outlet duct then unscrew and relocate the throttle body bracket nuts. The removal process begins by dislodging both water outlet housing mounting bolts to separate the housing from the lower Intake Manifold. Set it aside when finished. Wash each sealing surface by removing the Thermostat and o-ring or gasket from the water outlet housing and lower Intake Manifold. Follow the fastener notice in service precautions while mounting the water outlet housing back to the lower Intake Manifold after installing the Thermostat with either a fresh gasket or o-ring. Tighten the water outlet housing mounting bolts to a torque of 19 nm (14 ft. Lbs.). After you reinstall the throttle body bracket its nuts need to be tightened to 10 nm (89 inch lbs.). Empty and replace the cooling system before conducting a leak inspection.

OEM Chevrolet Thermostat

Engine Coolant Thermostat

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113 Thermostats found

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Chevrolet 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
Fits the following Chevrolet Models:
- Avalanche 1500 | 2004-2006 | Base, LS, LT, Z66, Z71 | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
- Avalanche 2500 | 2004-2006 | Base, LS, LT | 8 Cyl 8.1 L GAS
- Corvette | 2005-2008 | 427 Limited Edition Z06, Base, Z06 | 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS, 8 Cyl 7.0 L GAS
- Express 1500 | 2004-2006 | Base, LS, LT | 8 Cyl 5.3 L GAS
- Express 2500 | 2004-2007 | 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
- Express 3500 | 2004-2007 | Base, LS, LT | 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
- Impala | 2006-2009 | SS | 8 Cyl 5.3 L GAS
- Monte Carlo | 2006-2007 | SS | 8 Cyl 5.3 L GAS
- SSR | 2003-2006 | Base | 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Silverado 1500 | 2004-2006 | Base, Hybrid, LS, LT, SS, WT, Z71 Off-Road | 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
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Chevrolet Thermostat Housing Part Number: 25199826
$209.21 MSRP: $429.95
You Save: $220.74 (52%)
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Product Specifications
- Other Name: Housing, Engine Coolant Thermostat; Thermostat Housing Cover
- Replaces: 25189437, 96980317, 96984102
Fits the following Chevrolet Models:
- Aveo | 2009-2011 | LS, LT | 4 Cyl 1.6 L GAS
- Aveo5 | 2009-2011 | LS, LT | 4 Cyl 1.6 L GAS
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Chevrolet Thermostat Part Number: 12514334
$13.52 MSRP: $24.14
You Save: $10.62 (44%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature; Thermostat 195 Degree, Engine Coolant Temperature
Fits the following Chevrolet Models:
- Astro | 1987-1990 | Base | 4 Cyl 2.5 L GAS
- C1500 | 1988-1990 | 454 SS, Cheyenne, Scottsdale, Silverado, WT | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 7.4 L GAS
- C2500 | 1988-1990 | Cheyenne, Scottsdale, Silverado | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS
- C3500 | 1988-1990 | Cheyenne, Scottsdale, Silverado | 8 Cyl 5.7 L GAS, 8 Cyl 7.4 L GAS
- Camaro | 1985-1992 | Base, Berlinetta, Iroc-Z, LT, RS, RS Heritage Edition, Sport, Z28, Z28 Heritage Edition | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS
- K1500 | 1988-1990 | Cheyenne, Scottsdale, Silverado, WT | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS
- K2500 | 1988-1990 | Cheyenne, Scottsdale, Silverado | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS
- K3500 | 1988-1990 | Cheyenne, Scottsdale, Silverado | 8 Cyl 5.7 L GAS, 8 Cyl 7.4 L GAS
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Chevrolet Thermostat Housing Part Number: 55493557
$79.85 MSRP: $149.96
You Save: $70.11 (47%)
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Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature; Thermostat Housing Cover; Thermostat
Fits the following Chevrolet Models:
- Malibu | 2016-2019 | Hybrid | 4 Cyl 1.8 L FULL HYBRID EV-GAS (FHEV)
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Chevrolet Thermostat Housing Part Number: 19316187
$130.30 MSRP: $235.84
You Save: $105.54 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Housing, Engine Coolant Thermostat; Thermostat Housing Cover; Housing
Fits the following Chevrolet Models:
- City Express | 2015-2018 | LS, LT | 4 Cyl 2.0 L GAS
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Chevrolet Thermostat Part Number: 12680457
$41.59 MSRP: $82.56
You Save: $40.97 (50%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Thermostat Assembly-Engine Coolant; Thermostat, Engine Coolant Temperature
Fits the following Chevrolet Models:
- Silverado 2500 HD | 2017-2024 | Custom, High Country, LT, LTZ, WT | 8 Cyl 6.6 L DIESEL
- Silverado 3500 HD | 2017-2024 | High Country, LT, LTZ, WT | 8 Cyl 6.6 L DIESEL
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Chevrolet 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
Fits the following Chevrolet Models:
- Colorado | 2016-2022 | LT, WT, Z71, ZR2 | 4 Cyl 2.8 L DIESEL
- Express 2500 | 2017-2022 | Base, LS, LT | 4 Cyl 2.8 L DIESEL
- Express 3500 | 2017-2022 | Base, LS, LT | 4 Cyl 2.8 L DIESEL
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Chevrolet Thermostat Housing Part Number: 96407677
$77.07 MSRP: $144.74
You Save: $67.67 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Housing, Engine Coolant Thermostat; Engine Coolant Thermostat Housing Assembly; Thermostat Housing Cover; Thermostat Unit; Engine Coolant Thermostat
- Replaces: 96282726
Fits the following Chevrolet Models:
- Aveo | 2004-2008 | Base, LS, LT, Special Value | 4 Cyl 1.6 L GAS
- Aveo5 | 2007-2008 | LS, Special Value | 4 Cyl 1.6 L GAS
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Chevrolet Thermostat Unit Part Number: 55490715
$84.00 MSRP: $166.72
You Save: $82.72 (50%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Thermostat Assembly-Engine Coolant; Thermostat; Thermostat, Engine Coolant Temperature
Fits the following Chevrolet Models:
- Cruze | 2017-2019 | Diesel, L, LS, LT, Premier | 4 Cyl 1.4 L GAS, 4 Cyl 1.6 L DIESEL
- Equinox | 2018-2019 | LT, Premier | 4 Cyl 1.6 L DIESEL
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Chevrolet Thermostat Part Number: 84660340
$59.14 MSRP: $107.04
You Save: $47.90 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Thermostat Assembly-Engine Coolant; Thermostat, Engine Coolant Temperature
- Replaced by: 85542462
Fits the following Chevrolet Models:
- Corvette | 2020-2024 | E-Ray, Stingray | 8 Cyl 6.2 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 6.2 L GAS
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Chevrolet Thermostat Housing Part Number: 12689039
$71.08 MSRP: $146.06
You Save: $74.98 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
- Replaces: 12651113
Fits the following Chevrolet Models:
- Captiva Sport | 2012 | LT, LTZ | 6 Cyl 3.0 L FLEX
- Equinox | 2008-2017 | LT, LTZ, Premier, Sport | 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS, 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
- Malibu | 2008-2012 | LT, LTZ | 6 Cyl 3.6 L GAS
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Chevrolet Thermostat Housing Part Number: 12689037
$94.12 MSRP: $193.41
You Save: $99.29 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
- Replaces: 12632932, 12651114
Fits the following Chevrolet Models:
- Impala | 2012-2013 | LS, LT, LTZ, Police | 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
- Impala Limited | 2014-2016 | LS, LT, LTZ, Police | 6 Cyl 3.6 L FLEX
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Chevrolet 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
Fits the following Chevrolet Models:
- C1500 | 1996-1998 | Base, Cheyenne, Silverado, WT | 8 Cyl 6.5 L DIESEL
- C1500 Suburban | 1996-1999 | Base, LS, LT | 8 Cyl 6.5 L DIESEL
- C2500 | 1996-2000 | Base, Cheyenne, LS, Silverado, WT | 8 Cyl 6.5 L DIESEL
- C2500 Suburban | 1996-1999 | Base, LS, LT | 8 Cyl 6.5 L DIESEL
- C3500 | 1996-2000 | Base, Cheyenne, LS, Silverado | 8 Cyl 6.5 L DIESEL
- Express 2500 | 1996-2002 | Base, LS | 8 Cyl 6.5 L DIESEL
- Express 3500 | 1996-2002 | Base, LS | 8 Cyl 6.5 L DIESEL
- K1500 | 1996-1998 | Base, Cheyenne, Silverado, WT | 8 Cyl 6.5 L DIESEL
- K1500 Suburban | 1996-1999 | Base, LS, LT | 8 Cyl 6.5 L DIESEL
- K2500 | 1996-2000 | Base, Cheyenne, LS, Silverado, WT | 8 Cyl 6.5 L DIESEL
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Chevrolet Thermostat Housing Part Number: 12618159
$70.15 MSRP: $131.74
You Save: $61.59 (47%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Housing, Engine Coolant Thermostat; Engine Coolant Thermostat Housing; Thermostat Housing Cover
Fits the following Chevrolet Models:
- Captiva Sport | 2012 | LS | 4 Cyl 2.4 L FLEX
- Equinox | 2010-2017 | L, LS, LT, LTZ, Premier | 4 Cyl 2.4 L FLEX, 4 Cyl 2.4 L GAS
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Chevrolet Thermostat Housing Part Number: 12647027
$72.14 MSRP: $135.48
You Save: $63.34 (47%)
ADD TO CART
Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
Fits the following Chevrolet Models:
- Cruze | 2014-2015 | Diesel | 4 Cyl 2.0 L DIESEL
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Chevrolet Thermostat Housing Part Number: 12694088
$59.77 MSRP: $112.24
You Save: $52.47 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Thermostat; Housing, Engine Coolant Thermostat
Fits the following Chevrolet Models:
- Volt | 2019 | LT, Premier | 4 Cyl 1.5 L PLUG-IN HYBRID EV-GAS (PHEV)
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Chevrolet 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
Fits the following Chevrolet Models:
- Colorado | 2015-2016 | LT, WT, Z71 | 6 Cyl 3.6 L GAS
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Chevrolet Thermostat Part Number: 10207373
$11.27 MSRP: $20.12
You Save: $8.85 (44%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat, Engine Coolant Temperature
Fits the following Chevrolet Models:
- Astro | 1985-1992 | Base, CL, CS, LT | 6 Cyl 4.3 L GAS
- C1500 | 1988-1990 | Cheyenne, Scottsdale, Silverado, WT | 6 Cyl 4.3 L GAS
- C2500 | 1988-1990 | Cheyenne, Scottsdale, Silverado | 6 Cyl 4.3 L GAS
- Camaro | 1992, 1984 | Berlinetta, RS, RS Heritage Edition, Sport, Z28, Z28 Heritage Edition | 8 Cyl 5.0 L GAS
- Caprice | 1991-1993 | Base, Classic, Classic LS, Classic LTZ | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS
- G10 | 1992 | Beauville, Chevy Van, Sportvan | 6 Cyl 4.3 L GAS
- G20 | 1992 | Sportvan | 6 Cyl 4.3 L GAS
- G30 | 1992 | Beauville, Chevy Van, Hi-Cube | 6 Cyl 4.3 L GAS
- K1500 | 1988-1990 | Cheyenne, Scottsdale, Silverado, WT | 6 Cyl 4.3 L GAS
- K2500 | 1988-1990 | Cheyenne, Scottsdale, Silverado | 6 Cyl 4.3 L GAS
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Chevrolet Thermostat Housing Part Number: 12643796
$115.64 MSRP: $209.30
You Save: $93.66 (45%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Housing-Engine Coolant Thermostat; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
- Replaced by: 12693295
Fits the following Chevrolet Models:
- Silverado 2500 HD | 2017-2024 | Custom, High Country, LT, LTZ, WT | 8 Cyl 6.6 L DIESEL
- Silverado 3500 HD | 2017-2024 | High Country, LT, LTZ, WT | 8 Cyl 6.6 L DIESEL
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Chevrolet Thermostat Part Number: 55503988
$31.25 MSRP: $58.69
You Save: $27.44 (47%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Thermostat Assembly-Engine Coolant; Thermostat, Engine Coolant Temperature
- Replaced by: 25205415
Fits the following Chevrolet Models:
- Trailblazer | 2021-2024 | L, LS, LT | 3 Cyl 1.2 L GAS
- Trax | 2024 | ACTIV, LS, LT, RS | 3 Cyl 1.2 L GAS

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Chevrolet Thermostat

Choose OEM Thermostat, you're making the optimal decision for superior quality and perfect performance. You can feel confident because each component goes through stringent quality checks. Every part is carefully built to comply with Chevrolet's factory specifications. You'll enjoy a smooth, worry-free installation that fits just right. At ChevyPartsDeal.com, you'll find it easy to get top-quality OEM Chevrolet Thermostat. You can shop at highly competitive prices and protect your budget. All our genuine Chevrolet parts include a dependable manufacturer's warranty. You'll also appreciate our straightforward return policy and swift delivery services for extra convenience.

Chevrolet Thermostat Parts and Q&A

Thermostat
89018168
Q: How to replace the engine coolant thermostat in LLV and LLR engines (2.9L, 3.7L) on Chevrolet Colorado?
A:
To replace the engine-coolant Thermostat in vehicles with llv and llr engines (2.9L, 3.7L), start with draining the cooling system. Lift and stabilize the vehicle enough to reach the Thermostat Housing wheezing through the wheelhouse, then pop the leftover wheelhouse liner. It is recommended to remove the radiator inlet hose from the Thermostat by using hose clamp pliers, i.e., a j 38185 hose clamp pliers. Secondly, you need to remove the Thermostat Housing bolts and loosen the Thermostat Housing from the engine block. Clean and inspect the engine block's sealing surface and the Thermostat Housing. For installation, place the Thermostat Housing onto the engine block while making sure the Thermostat Housing bolts are properly installed and tightened immediately to 10 nm (89 lb in). Replace the radiator inlet hose using the j 38185 hose clamp pliers, replace the left wheelhouse liner, and lower the vehicle. Lastly, cool down the system and check all the sealing points for leakages after the ignition of the engine.
Intake Manifold
24577299
Q: How to Ensure Proper Thermostat Installation on Chevrolet S10?
A:
Start the Thermostat replacement process by draining part of the cooling system liquid. First detach the air cleaner outlet duct then unscrew and relocate the throttle body bracket nuts. The removal process begins by dislodging both water outlet housing mounting bolts to separate the housing from the lower Intake Manifold. Set it aside when finished. Wash each sealing surface by removing the Thermostat and o-ring or gasket from the water outlet housing and lower Intake Manifold. Follow the fastener notice in service precautions while mounting the water outlet housing back to the lower Intake Manifold after installing the Thermostat with either a fresh gasket or o-ring. Tighten the water outlet housing mounting bolts to a torque of 19 nm (14 ft. Lbs.). After you reinstall the throttle body bracket its nuts need to be tightened to 10 nm (89 inch lbs.). Empty and replace the cooling system before conducting a leak inspection.