OEM GM Thermostats

Just like in your home, the thermostat helps to regulate the temperature. In your car or truck, it helps to block the coolant as your car heats up. Once it reaches operating temperature, it opens up and allows the coolant to reach the engine.

The thermostat keeps the temperature even because if the engine overheats, it can cause catastrophic damage. This device sits between the radiator and the engine. Because it lets the engine warm up slowly, it reduces any wear and tear on the components.

Should you need to replace the thermostat in your vehicle, get a genuine OEM GM part that is specifically designed to meet the expectations of your vehicle. An Envoy may have different needs than a Silverado 1500, so a genuine GM replacement part for your specific vehicle is a much better choice than a generic aftermarket part. Genuine parts are always going to fit without modification.

You may need to replace the thermostat at some point in your vehicle’s lifetime. These parts are subject to a lot of abuse, so they can start to stick open or closed. If that happens, you are going to have an engine that is too cold or too hot, so replace it as soon as it becomes worn.

Thermostat Asm-Eng Cool
25192923
Other Names: Thermostat More
Description: Spark. Without ev. More
Fits:
  • Chevrolet:
    • Spark
$71.62
$41.54
$71.62
$41.54
Thermostat Unit
55492938
Other Names: Thermostat More
Description: Cascada. More
Notes: Included With Oil Cooler Assembly. More
Fits:
  • Buick:
    • Cascada
$86.02
$49.89
$86.02
$49.89
Thermostat
89018168
Other Names: Thermostat Kit More
Description: G8. 6.0 & 6.2L, 2nd design. More
Notes: Included With Water Inlet. More
Fits:
  • Buick:
    • Rainier
  • Cadillac:
    • CTS,
    • Escalade,
    • Escalade ESV,
    • Escalade EXT
  • Chevrolet:
    • Avalanche,
    • Camaro,
    • Caprice,
    • Colorado,
    • Corvette,
    • Express 1500,
    • Express 2500,
    • Express 3500,
    • Silverado 1500,
    • Silverado 1500 Classic,
    • Silverado 2500 HD,
    • Silverado 2500 HD Classic,
    • Silverado 3500 Classic,
    • Silverado 3500 HD,
    • SS,
    • Suburban 1500,
    • Suburban 2500,
    • Tahoe,
    • Trailblazer
  • GMC:
    • Canyon,
    • Envoy,
    • Savana 1500,
    • Savana 2500,
    • Savana 3500,
    • Sierra 1500,
    • Sierra 1500 Classic,
    • Sierra 1500 HD Classic,
    • Sierra 2500 HD,
    • Sierra 2500 HD Classic,
    • Sierra 3500 Classic,
    • Sierra 3500 HD,
    • Yukon,
    • Yukon XL 1500,
    • Yukon XL 2500
  • Hummer:
    • H2,
    • H3,
    • H3T
  • Pontiac:
    • G8
  • 38 more
$59.18
$34.32
$59.18
$34.32
Thermostat Unit
55593034
Other Names: Thermostat Hsng, Thermostat More
Description: Cruze, Cruze Limited. Sonic. Trax. 1.4L turbo. More
Fits:
  • Buick:
    • Encore
  • Chevrolet:
    • Cruze,
    • Cruze Limited,
    • Sonic,
    • Trax
$87.26
$50.61
$87.26
$50.61
Thermostat
12635761
Other Names: Housing More
Notes: Included With Water Pump Assembly. More
Fits:
  • Chevrolet:
    • Volt
$110.92
$64.33
$110.92
$64.33
Thermostat
55493557
Replaces: 55491364
Description: Malibu. 1.8L. More
Notes: Included With Water Pump Assembly. More
Fits:
  • Chevrolet:
    • Malibu
$102.77
$67.95
$102.77
$67.95
Thermostat
55597008
Description: Sonic. 1.8L. More
Notes: Included With Thermostat Housing. More
Fits:
  • Chevrolet:
    • Cruze,
    • Cruze Limited,
    • Sonic
$113.20
$65.66
$113.20
$65.66
Thermostat
19316307
Description: Inlet. More
Fits:
  • Chevrolet:
    • City Express
$30.70
$17.96
$30.70
$17.96
Thermostat
12661950
Description: Camaro. 7.0L. More
Notes: Included With Water Pump. More
Fits:
  • Chevrolet:
    • Camaro
$51.62
$29.94
$51.62
$29.94
Thermostat
55593035
Description: Volt. More
Notes: Includes Water Inlet And Thermostat Gasket. More
Fits:
  • Cadillac:
    • ELR
  • Chevrolet:
    • Volt
$74.00
$48.93
$74.00
$48.93
Control Valve
19316308
Other Names: Thermostat More
Description: City Express. Outlet. More
Fits:
  • Chevrolet:
    • City Express
$19.62
$11.58
$19.62
$11.58
Thermostat Housing
12642691
Other Names: Thermostat Hsng, Thermostat More
Description: Canyon, colorado. 2.8L turbo diesel. More
Notes: Includes Thermostat And Gaskets. More
Fits:
  • Chevrolet:
    • Colorado
  • GMC:
    • Canyon
$128.34
$73.80
$128.34
$73.80
Thermostat
12581519
Other Names: Thermostat Kit More
Description: Vue. 3.5L. More
Fits:
  • Saturn:
    • Vue
$56.54
$32.79
$56.54
$32.79
Thermostat Asm-Eng Cool
12622410
Description: Aura Green Line, Aura. Vue Hybrid. Ion. Sky. Saturn. 2.0l, 2.4l. Sedan, 2.2L. More
Fits:
  • Buick:
    • LaCrosse,
    • Regal,
    • Verano
  • Chevrolet:
    • Captiva Sport,
    • Cavalier,
    • Classic,
    • Cobalt,
    • Equinox,
    • HHR,
    • Impala,
    • Malibu
  • GMC:
    • Terrain
  • Oldsmobile:
    • Alero
  • Pontiac:
    • G5,
    • G6,
    • Grand Am,
    • Solstice,
    • Sunfire
  • Saturn:
    • Aura,
    • Ion,
    • L100,
    • L200,
    • L300,
    • LS,
    • LS1,
    • LW1,
    • LW200,
    • Sky,
    • Vue
  • 24 more
$66.28
$38.44
$66.28
$38.44
Thermostat
97241129
Positions: Front
Description: All models. 185 degrees. Express, savana. Silverado, sierra. 6.6L turbo diesel, front. More
Fits:
  • Chevrolet:
    • Express 2500,
    • Express 3500,
    • Silverado 2500 HD,
    • Silverado 2500 HD Classic,
    • Silverado 3500,
    • Silverado 3500 Classic,
    • Silverado 3500 HD
  • GMC:
    • Savana 2500,
    • Savana 3500,
    • Sierra 2500 HD,
    • Sierra 2500 HD Classic,
    • Sierra 3500,
    • Sierra 3500 Classic,
    • Sierra 3500 HD
  • 9 more
$68.40
$39.67
$68.40
$39.67
Thermostat
97241130
Positions: Rear
Description: All models. 180 degrees. Express, savana. Silverado, sierra. 6.6L turbo diesel, rear. More
Fits:
  • Chevrolet:
    • Express 2500,
    • Express 3500,
    • Silverado 2500 HD,
    • Silverado 2500 HD Classic,
    • Silverado 3500,
    • Silverado 3500 Classic,
    • Silverado 3500 HD
  • GMC:
    • Savana 2500,
    • Savana 3500,
    • Sierra 2500 HD,
    • Sierra 2500 HD Classic,
    • Sierra 3500,
    • Sierra 3500 Classic,
    • Sierra 3500 HD
  • 9 more
$59.78
$34.67
$59.78
$34.67
Thermostat Housing
12639905
Other Names: Thermostat Hsng, Housing More
Description: CTS. With vsport. 3.6L twin-turbo. More
Notes: Includes Thermostat. More
Fits:
  • Cadillac:
    • ATS,
    • CTS
$175.48
$100.90
$175.48
$100.90
Housing Asm-Eng Cool Therm
12652327
Other Names: Thermostat Hsng, Housing More
Description: Camaro. 3.6L. More
Notes: Includes Thermostat & Gasket. More
Fits:
  • Cadillac:
    • ATS,
    • CTS
  • Chevrolet:
    • Camaro
$86.46
$50.15
$86.46
$50.15
Thermostat Housing
12638452
Other Names: Thermostat Hsng, Housing More
Description: XTS. 3.6L twin-turbo. With turbocharger. More
Notes: Includes Thermostat. More
Fits:
  • Cadillac:
    • XTS
$165.70
$95.28
$165.70
$95.28
Housing Asm-Eng Cool Therm
12642720
Other Names: Thermostat Hsng, Housing More
Description: 6.6L diesel. Silverado, sierra. More
Fits:
  • Chevrolet:
    • Silverado 2500 HD,
    • Silverado 3500 HD
  • GMC:
    • Sierra 2500 HD,
    • Sierra 3500 HD
$162.20
$93.27
$162.20
$93.27
Housing Asm-Eng Cool Therm
12642719
Other Names: Thermostat Housing, Housing More
Description: All. 6.6l diesel. Express, savana. More
Fits:
  • Chevrolet:
    • Express 2500,
    • Express 3500
  • GMC:
    • Savana 2500,
    • Savana 3500
$157.34
$90.47
$157.34
$90.47
Thermostat Housing
12647180
Other Names: Thermostat Unit, Housing More
Description: Camaro. 3.6L. More
Fits:
  • Cadillac:
    • CT6,
    • CTS
  • Chevrolet:
    • Camaro
$78.28
$45.40
$78.28
$45.40
Thermostat Asm-Eng Cool
12591881
Description: Aura. Vue. 3.9L. 3.5l. More
Notes: Includes Thermostat Gasket. More
Fits:
  • Buick:
    • Lucerne,
    • Terraza
  • Chevrolet:
    • Impala,
    • Malibu,
    • Monte Carlo,
    • Uplander
  • Pontiac:
    • G6,
    • Montana
  • Saturn:
    • Aura,
    • Relay,
    • Vue
  • 6 more
$66.22
$38.41
$66.22
$38.41
Housing Asm-Eng Cool Therm
25192228
Other Names: Thermostat Hsng, Housing More
Description: Cruze, Cruze Limited. Sonic. 1.8L. More
Notes: Thermostat Included. More
Fits:
  • Chevrolet:
    • Cruze,
    • Cruze Limited,
    • Sonic
$148.78
$85.55
$148.78
$85.55
Thermostat Housing
12660976
Other Names: Thermostat Hsng, Housing More
Description: Canyon, colorado. 3.6L. More
Notes: Includes Thermostat And Gaskets. More
Fits:
  • Chevrolet:
    • Colorado
  • GMC:
    • Canyon
$120.48
$69.88
$120.48
$69.88
Housing Asm-Eng Cool Therm
12651113
Other Names: Thermostat Hsng, Housing More
Description: Aura. Vue. 3.6l. More
Notes: Includes Thermostat And Gasket. More
Fits:
  • Buick:
    • LaCrosse
  • Cadillac:
    • SRX,
    • XTS
  • Chevrolet:
    • Captiva Sport,
    • Equinox,
    • Impala,
    • Malibu
  • GMC:
    • Terrain
  • Pontiac:
    • G6,
    • Torrent
  • Saturn:
    • Aura,
    • Vue
  • 7 more
$132.44
$76.15
$132.44
$76.15
Thermostat Gasket
55565619
Other Names: Thermostat Seal, Thermostat Unit Gasket, Seal More
Description: Cruze, Cruze Limited. Sonic. Trax. 1.4L turbo. More
Notes: Included With Thermostat Housing. More
Fits:
  • Buick:
    • Encore
  • Cadillac:
    • ELR
  • Chevrolet:
    • Cruze,
    • Cruze Limited,
    • Sonic,
    • Trax
  • 1 more
$16.00
$9.44
$16.00
$9.44
Thermostat,Eng Cool(W/Wat Otlt)
24435102
Description: Astra. More
Notes: Included With Thermostat Housing. Includes Water Outlet. More
Fits:
  • Saturn:
    • Astra
$52.68
$30.55
$52.68
$30.55
Thermostat Housing
12647027
Other Names: Thermostat Hsng, Housing More
Description: Cruze. 2.0L turbo diesel. More
Notes: Included With Cooler Assembly. Thermostat Included. More
Fits:
  • Chevrolet:
    • Cruze
$97.76
$56.70
$97.76
$56.70
Thermostat Housing
12618159
Other Names: Thermostat Hsng, Housing More
Description: Equinox, Terrain. 2.4L. More
Fits:
  • Chevrolet:
    • Captiva Sport,
    • Equinox
  • GMC:
    • Terrain
$83.93
$55.49
$83.93
$55.49
Housing Asm-Eng Cool Therm
12651114
Other Names: Thermostat Hsng, Housing More
Replaces: 12632932
Description: Impala. 3.6L. More
Notes: Includes Thermostat & Gasket. More
Fits:
  • Chevrolet:
    • Impala,
    • Impala Limited
$114.62
$66.48
$114.62
$66.48
Housing Asm-Eng Cool Therm
12638893
Other Names: Thermostat Hsng, Housing More
Description: Outlook. More
Notes: Includes Thermostat. More
Fits:
  • Buick:
    • Enclave
  • Chevrolet:
    • Traverse
  • GMC:
    • Acadia,
    • Acadia Limited
  • Saturn:
    • Outlook
$85.80
$49.76
$85.80
$49.76
Housing Asm-Eng Cool Therm
12651603
Other Names: Thermostat Cover, Housing More
Description: Acadia. 2.5L. More
Notes: Included With Water Pump Assembly. Includes Thermostat. More
Fits:
  • Buick:
    • Envision,
    • Regal
  • Cadillac:
    • ATS,
    • CT6,
    • CTS
  • Chevrolet:
    • Camaro,
    • Impala,
    • Malibu,
    • Malibu Limited
  • GMC:
    • Acadia
  • 5 more
$87.80
$50.92
$87.80
$50.92
Thermostat,Eng Cool
12601556
Description: STS-v. XLR. 4.4L. More
Fits:
  • Cadillac:
    • STS,
    • XLR
$25.46
$14.89
$25.46
$14.89
Thermostat
88974571
Description: Vibe. 2.4L. Without gt. 1.8l without ho. More
Fits:
  • Pontiac:
    • Vibe
$53.86
$31.24
$53.86
$31.24
Thermostat Housing
92249137
Other Names: Thermostat Hsng, Housing More
Description: G8. 3.6L. More
Notes: Includes Thermostat And Seal. More
Fits:
  • Chevrolet:
    • Caprice
  • Pontiac:
    • G8
$82.82
$54.76
$82.82
$54.76
Housing Asm-Eng Cool Therm
12652328
Other Names: Thermostat Hsng, Housing More
Description: STS. CTS. Coupe, 3.6L. Wagon, 3.0, 3.6L. 3.0L, 3.6L, with direct injection. More
Notes: Includes Thermostat. More
Fits:
  • Cadillac:
    • CTS,
    • STS
$166.22
$95.58
$166.22
$95.58
Housing,Eng Cool Therm
12608657
Other Names: Thermostat Hsng, Housing More
Description: SRX. 2.8L. More
Fits:
  • Cadillac:
    • SRX
$67.06
$38.89
$67.06
$38.89
Thermostat Housing
12605853
Other Names: Thermostat Hsng, Housing More
Description: Sky. 2.0L. More
Fits:
  • Buick:
    • Regal,
    • Verano
  • Chevrolet:
    • Cobalt,
    • HHR
  • Pontiac:
    • Solstice
  • Saturn:
    • Sky
  • 1 more
$136.33
$89.37
$136.33
$89.37
Housing Asm,Eng Cool Therm
25189437
Other Names: Thermostat Housing, Housing More
Replaces: 96984102
Description: G3. More
Notes: Includes Water Outlet And Thermostat. More
Fits:
  • Chevrolet:
    • Aveo,
    • Aveo5
  • Pontiac:
    • G3
$351.34
$202.02
$351.34
$202.02
Thermostat Housing
19185641
Other Names: Thermostat Hsng, Housing More
Description: Vibe. 1.8L. More
Fits:
  • Pontiac:
    • Vibe
$46.60
$31.08
$46.60
$31.08
Housing Asm-Eng Cool Therm
12597172
Other Names: Thermostat Housing, Housing More
Description: Aura Green Line, Aura. Vue Hybrid. Sky. 2.4l. Sedan,. Coupe, 2.2L. More
Fits:
  • Buick:
    • LaCrosse,
    • Regal,
    • Verano
  • Chevrolet:
    • Captiva Sport,
    • Cobalt,
    • HHR,
    • Impala,
    • Malibu
  • Pontiac:
    • G5,
    • G6,
    • Solstice
  • Saturn:
    • Aura,
    • Ion,
    • Sky,
    • Vue
  • 10 more
$124.46
$82.29
$124.46
$82.29
Thermostat Housing
12667383
Other Names: Water Pump, Housing More
Replaces: 12642752
Description: Malibu. Cruze. 1.5L turbo. Without 8 speed auto. More
Notes: Included With Water Pump Assembly. More
Fits:
  • Buick:
    • Encore
  • Chevrolet:
    • Cruze,
    • Malibu
$111.32
$77.46
$111.32
$77.46
Thermostat Housing
55599997
Other Names: Housing More
Description: Cascada. More
Notes: Included With Oil Cooler Assembly. More
Fits:
  • Buick:
    • Cascada
$135.65
$88.92
$135.65
$88.92
Thermostat Housing
19316187
Other Names: Housing More
Description: City Express. More
Fits:
  • Chevrolet:
    • City Express
$139.62
$80.28
$139.62
$80.28
Thermostat Housing
98082690
Other Names: Thermostat Housing, Housing More
Description: 6.6L diesel. Silverado, sierra. More
Fits:
  • Chevrolet:
    • Express 2500,
    • Express 3500,
    • Silverado 2500 HD,
    • Silverado 3500 HD
  • GMC:
    • Savana 2500,
    • Savana 3500,
    • Sierra 2500 HD,
    • Sierra 3500 HD
  • 3 more
$358.84
$235.22
$358.84
$235.22
Water Outlet
12673659
Other Names: Outlet More
Description: XT5. More
Fits:
  • Buick:
    • LaCrosse
  • Cadillac:
    • XT5
$125.10
$71.93
$125.10
$71.93
Thermostat Unit
12670209
Other Names: Housing More
Description: 3.6L. More
Fits:
  • Cadillac:
    • ATS,
    • CT6,
    • CTS
  • Chevrolet:
    • Camaro
$75.26
$43.65
$75.26
$43.65
Housing Asm-Eng Cool Therm
12650241
Other Names: Thermostat Hsng, Housing More
Description: Canyon, colorado. 2.5L. More
Notes: Included With Water Pump Assembly. Includes Thermostat. More
Fits:
  • Cadillac:
    • ATS
  • Chevrolet:
    • Colorado,
    • Malibu
  • GMC:
    • Canyon
$46.34
$27.11
$46.34
$27.11
Seal-Wat Otlt
25189205
Other Names: Seal More
Notes: Included With Thermostat Housing. More
Fits:
  • Chevrolet:
    • Aveo,
    • Aveo5,
    • Cruze,
    • Cruze Limited,
    • Sonic
  • Pontiac:
    • G3
  • Saturn:
    • Astra
  • 2 more
$14.20
$8.38
$14.20
$8.38