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2020 GMC Sierra 2500 HD
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Price Match Guarantee
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Lifetime Replacement
2020 GMC Sierra 2500 HD

2020 GMC Sierra 2500 HD Thermostats

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Showing 1 - 10 of 10 results
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Thermostat
Motorad®
Thermostat
Part Number: MRD448-180
Guaranteed to Fit
$13.99
Vehicle Fitment
  • 2020 GMC Sierra 2500 HD SLE 8 Cyl 6.6L Temperature 180F; With Thermostat and Seal; Oe Specified Temperature
  • 2020 GMC Sierra 2500 HD Denali 8 Cyl 6.6L Temperature 180F; With Thermostat and Seal; Oe Specified Temperature
  • 2020 GMC Sierra 2500 HD AT4 8 Cyl 6.6L Temperature 180F; With Thermostat and Seal; Oe Specified Temperature
  • 2020 GMC Sierra 2500 HD Base 8 Cyl 6.6L Temperature 180F; With Thermostat and Seal; Oe Specified Temperature
  • 2020 GMC Sierra 2500 HD SLT 8 Cyl 6.6L Temperature 180F; With Thermostat and Seal; Oe Specified Temperature
Product Details
Location : RearQuantity Sold : Sold individuallyWarranty : 12-month Motorad limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Opening Temperature Rating : 180 DegreesRecommended Use : OE Replacement
Thermostat
Motorad®
Thermostat
Part Number: MRD447-185
Guaranteed to Fit
$16.99
Vehicle Fitment
  • 2020 GMC Sierra 2500 HD SLE 8 Cyl 6.6L Temperature 185F; Oe Specified Temperature
  • 2020 GMC Sierra 2500 HD Denali 8 Cyl 6.6L Temperature 185F; Oe Specified Temperature
  • 2020 GMC Sierra 2500 HD AT4 8 Cyl 6.6L Temperature 185F; Oe Specified Temperature
  • 2020 GMC Sierra 2500 HD Base 8 Cyl 6.6L Temperature 185F; Oe Specified Temperature
  • 2020 GMC Sierra 2500 HD SLT 8 Cyl 6.6L Temperature 185F; Oe Specified Temperature
Product Details
Location : FrontQuantity Sold : Sold individuallyWarranty : 12-month Motorad limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Opening Temperature Rating : 185 degreesRecommended Use : OE Replacement
GM Original Equipment Series Thermostat
AC Delco®
GM Original Equipment Series Thermostat
Part Number: AC131197
Guaranteed to Fit
$23.49
Vehicle Fitment
  • 2020 GMC Sierra 2500 HD SLE 8 Cyl 6.6L
  • 2020 GMC Sierra 2500 HD AT4 8 Cyl 6.6L
  • 2020 GMC Sierra 2500 HD Denali 8 Cyl 6.6L
  • 2020 GMC Sierra 2500 HD Base 8 Cyl 6.6L
  • 2020 GMC Sierra 2500 HD SLT 8 Cyl 6.6L
Product Details
Quantity Sold : Sold individuallyWarranty : 24-months or unlimited mile AC Delco limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Opening Temperature Rating : 85 degrees CSeries : GM Original Equipment SeriesMaterial : SteelRecommended Use : OE Replacement
Professional Series Thermostat
AC Delco®
Professional Series Thermostat
Part Number: AC12T99D
Guaranteed to Fit
$30.49
Vehicle Fitment
  • 2020 GMC Sierra 2500 HD SLE 8 Cyl 6.6L
  • 2020 GMC Sierra 2500 HD Denali 8 Cyl 6.6L
  • 2020 GMC Sierra 2500 HD AT4 8 Cyl 6.6L
  • 2020 GMC Sierra 2500 HD Base 8 Cyl 6.6L
  • 2020 GMC Sierra 2500 HD SLT 8 Cyl 6.6L
Product Details
Location : FrontNotes : Includes seal; OEM recommended temperature; StandardQuantity Sold : Sold individuallyWarranty : 24-months or unlimited mile AC Delco limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Opening Temperature Rating : 85 degrees CSeries : Professional SeriesMaterial : Stainless SteelRecommended Use : OE Replacement
Thermostat
Motorad®
Thermostat
Part Number: MRD523-190
Guaranteed to Fit
$14.49
Vehicle Fitment
  • 2020 GMC Sierra 2500 HD SLE 8 Cyl 6.6L Temperature 187F; With Thermostat and Seal; Oe Specified Temperature
  • 2020 GMC Sierra 2500 HD Denali 8 Cyl 6.6L Temperature 187F; With Thermostat and Seal; Oe Specified Temperature
  • 2020 GMC Sierra 2500 HD Base 8 Cyl 6.6L Temperature 187F; With Thermostat and Seal; Oe Specified Temperature
  • 2020 GMC Sierra 2500 HD SLT 8 Cyl 6.6L Temperature 187F; With Thermostat and Seal; Oe Specified Temperature
  • 2020 GMC Sierra 2500 HD AT4 8 Cyl 6.6L Temperature 187F; With Thermostat and Seal; Oe Specified Temperature
Product Details
Quantity Sold : Sold individuallyWarranty : 12-month Motorad limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Opening Temperature Rating : 187 degreesRecommended Use : OE Replacement
Thermostat
Motorad®
Thermostat
Part Number: MRD523-180
Guaranteed to Fit
$11.99
Vehicle Fitment
  • 2020 GMC Sierra 2500 HD SLE 8 Cyl 6.6L Temperature 180F; Alternate Temperature Option
  • 2020 GMC Sierra 2500 HD Denali 8 Cyl 6.6L Temperature 180F; Alternate Temperature Option
  • 2020 GMC Sierra 2500 HD Base 8 Cyl 6.6L Temperature 180F; Alternate Temperature Option
  • 2020 GMC Sierra 2500 HD SLT 8 Cyl 6.6L Temperature 180F; Alternate Temperature Option
  • 2020 GMC Sierra 2500 HD AT4 8 Cyl 6.6L Temperature 180F; Alternate Temperature Option
Product Details
Quantity Sold : Sold individuallyWarranty : 12-month Motorad limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Opening Temperature Rating : 180 DegreesRecommended Use : OE Replacement
Thermostat
Motorad®
Thermostat
Part Number: MRD447448
Guaranteed to Fit
$36.49
Vehicle Fitment
  • 2020 GMC Sierra 2500 HD SLE 8 Cyl 6.6L Temperature 180F And 185F; Oe Specified Temperature; Cylinder Head
  • 2020 GMC Sierra 2500 HD Denali 8 Cyl 6.6L Temperature 180F And 185F; Oe Specified Temperature; Cylinder Head
  • 2020 GMC Sierra 2500 HD AT4 8 Cyl 6.6L Temperature 180F And 185F; Oe Specified Temperature; Cylinder Head
  • 2020 GMC Sierra 2500 HD Base 8 Cyl 6.6L Temperature 180F And 185F; Oe Specified Temperature; Cylinder Head
  • 2020 GMC Sierra 2500 HD SLT 8 Cyl 6.6L Temperature 180F And 185F; Oe Specified Temperature; Cylinder Head
Product Details
Quantity Sold : Set of 2Warranty : 12-month Motorad limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Opening Temperature Rating : 180 and 185 degrees FRecommended Use : OE Replacement
Thermostat
Motorad®
Thermostat
Part Number: MRD523-160
Guaranteed to Fit
$13.49
Vehicle Fitment
  • 2020 GMC Sierra 2500 HD SLE 8 Cyl 6.6L Temperature 160F; Alternate Temperature Option
  • 2020 GMC Sierra 2500 HD Denali 8 Cyl 6.6L Temperature 160F; Alternate Temperature Option
  • 2020 GMC Sierra 2500 HD Base 8 Cyl 6.6L Temperature 160F; Alternate Temperature Option
  • 2020 GMC Sierra 2500 HD SLT 8 Cyl 6.6L Temperature 160F; Alternate Temperature Option
  • 2020 GMC Sierra 2500 HD AT4 8 Cyl 6.6L Temperature 160F; Alternate Temperature Option
Product Details
Quantity Sold : Sold individuallyWarranty : 12-month Motorad limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Opening Temperature Rating : 160 degreesRecommended Use : OE Replacement
Gates OE Replacement Thermostat
Gates®
Gates OE Replacement Thermostat
Part Number: GAT34198
Guaranteed to Fit
$11.49
Vehicle Fitment
  • 2020 GMC Sierra 2500 HD SLE 8 Cyl 6.6L 187 Degree
  • 2020 GMC Sierra 2500 HD Denali 8 Cyl 6.6L 187 Degree
  • 2020 GMC Sierra 2500 HD Base 8 Cyl 6.6L 187 Degree
  • 2020 GMC Sierra 2500 HD SLT 8 Cyl 6.6L 187 Degree
  • 2020 GMC Sierra 2500 HD AT4 8 Cyl 6.6L 187 Degree
Product Details
Prop 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Promotions : Cooling EssentialsOpening Temperature Rating : 180 DegreesSeries : Gates OE ReplacementRecommended Use : OE Replacement
GM Original Equipment Series Thermostat
AC Delco®
GM Original Equipment Series Thermostat
Part Number: AC131160
Guaranteed to Fit
$40.99
Vehicle Fitment
  • 2020 GMC Sierra 2500 HD SLE 8 Cyl 6.6L 6-Speed, Automatic Transmission, transmissionmfrcode : 6L90
  • 2020 GMC Sierra 2500 HD Denali 8 Cyl 6.6L 6-Speed, Automatic Transmission, transmissionmfrcode : 6L90
  • 2020 GMC Sierra 2500 HD Base 8 Cyl 6.6L 6-Speed, Automatic Transmission, transmissionmfrcode : 6L90
  • 2020 GMC Sierra 2500 HD SLT 8 Cyl 6.6L 6-Speed, Automatic Transmission, transmissionmfrcode : 6L90
  • 2020 GMC Sierra 2500 HD AT4 8 Cyl 6.6L 6-Speed, Automatic Transmission, transmissionmfrcode : 6L90
Product Details
Notes : Includes SealQuantity Sold : Sold individuallyWarranty : 24-months or unlimited mile AC Delco limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Opening Temperature Rating : 86 degrees CSeries : GM Original Equipment SeriesMaterial : Stainless SteelRecommended Use : OE Replacement
Page 1 of 1 | Showing 1 - 10 of 10 results

Top Rated Products

Gates Gates OE Replacement Thermostat
$11.49( Review)
Great thermostat, heats my truck in less time.
Dan F.
VERIFIED PURCHASER

Popular Products

Product Questions & Answers

AC Delco GM Original Equipment Series Thermostat
$40.99
Q:I don't see my 2007 GMC ENVOY DENALI 5.3L in your fit section for a thermostat.  Is this an exact fit or not? Show Less
Robert M.
A:BEST ANSWERHi Robert, I'm glad to assist you. This is an exact fit. It is stated that this is a guaranteed fit for the 2007 Envoy Denali models. Click on the link below for direct ordering to take advantage of our ongoing discount and limited stocks. I hope this helps, and happy shopping. https://www.carparts.com/thermostat/ac-delco/ac131160?can=CPAE1047_CSQA_20240321 Show less
Arnel E.
 
1 Question, 1 AnswerView all Q&As >

Helpful Automotive Resources

P0597 Code: Thermostat Heater Control Circuit / Open
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What Does It Mean When the Engine Is Hot While the AC Is Off?
What Does It Mean When the Engine Is Hot While the AC Is Off?If you’re wondering how your engine gets so hot even if the air conditioning is off, then there are many explanations as to why. Usually, it’s due to a lack of coolant. In other cases, the culprit for an overheating engine is broken parts. Here are some of the potential
What Does Check Gauges Mean?
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What Causes a Car to Overheat When Idling?
What Causes a Car to Overheat When Idling?Leaving your AC running may contribute to this problem because the car’s AC forces the engine to work harder. These factors combined can make the engine overheat very quickly. A simple solution would be to turn off the AC in hopes of lowering the temperature of the engine, but if
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Where Is the Thermostat Located?
Where Is the Thermostat Located?Have you driven your vehicle recently? Because if the answer’s yes, you’ll want to turn off the engine and let it cool down before trying to access the thermostat. This is because you’ll have to unclamp your radiator hose and drain your coolant before you can get to your thermostat.