Car Parts Discount

GMC Sierra 2500 HD Thermostats

You enjoy taking care of your Sierra 2500 HD.

Select Your VehicleThe vehicle in your driveway is head and shoulders above the rest compared to all the other cars, trucks, and SUVs these days. Obviously, you didn't buy your Sierra 2500 HD unless you understood you would be getting performance and rugged design both rolled up into one car, truck, or SUV. It's not a regular occurrence that you realize that you have to buy a replacement Thermostats to repair your automobile. Car aficionados know that a brand you can trust is built into each GMC, and know that only top quality repair Sierra 2500 HD parts will suffice when maintenance needs to be done.

Why Thermostats replacement is so important.

Your car or truck has a liquid-cooled engine, and its thermostat keeps the coolant flowing in the right direction so that your engine can maintain a constant and ideal operating temperature. On start-up, the thermostat remains closed; bypassing the flow of coolant through your radiator. This gets the coolant hot so that the engine warms up. Once it reaches an optimal operating temperature, your GMC Sierra 2500 HD thermostat responds by directing coolant to the radiator. Now your coolant is part of a constant cycle in your GMC Sierra 2500 HD engine that keeps it within a specific range of temperatures that are determined for the engine to achieve the best balance between power, fuel efficiency, and emissions... all thanks to the thermostat.

There's no reason to delay... fix it today.

When your GMC needs the best replacement Thermostats, there's no need to waste time looking anywhere other than the authority, Car Parts Discount. At Car Parts Discount, we have real customer support agents available with enough expertise to help you buy the appropriate GMC Sierra 2500 HD part for your project or repair. Bring your Sierra 2500 HD back to life with the highest quality new or rebuilt parts from the experts at Car Parts Discount. Just choose your year from the list below to find the right GMC Sierra 2500 HD Thermostats for your 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010, 2009, 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 1982 model.

Info: Select your make and model in the red title bar above so we can show the parts you need.
Motorad
2001-2003 GMC Sierra 2500 HD Motorad Engine Coolant Thermostat 267-195
4.25, Save 39%   NEW ITEM
OEM: 267-195, Item: 1407316
  Only 9 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: 33329Gates
2001-2006 GMC Sierra 2500 HD Gates Engine Coolant Thermostat 33329
4.75, Save 39%   NEW ITEM
OEM: 33329, Item: 667733
  In Stock, Usually ships within 1-2 business days
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GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: 12T55DACDelco
2001-2006 GMC Sierra 2500 HD ACDelco Engine Coolant Thermostat 12T55D
5.05, Save 39%   POPULAR
OEM: 12T55D, Item: 885182
  In Stock, Usually ships within 1 business day
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GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: 12T55EACDelco
2001-2006 GMC Sierra 2500 HD ACDelco Engine Coolant Thermostat 12T55E
5.05, Save 39%   NEW ITEM
OEM: 12T55E, Item: 890430
  In Stock, Usually ships within 1 business day
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Motorad
2001-2003 GMC Sierra 2500 HD Motorad Engine Coolant Thermostat 2067-195
5.15, Save 40%   NEW ITEM
OEM: 2067-195, Item: 1407585
  Only 5 left In Stock, Usually ships within 1 business day
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Motorad
2001-2003 GMC Sierra 2500 HD Motorad Engine Coolant Thermostat 456-187
5.45, Save 40%   NEW ITEM
OEM: 456-187, Item: 1405079
  In Stock, Usually ships within 1-2 business days
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GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: 33329SGates
2001-2006 GMC Sierra 2500 HD Gates Engine Coolant Thermostat 33329S
6.75, Save 39%   NEW ITEM
OEM: 33329S, Item: 679331
  Only 5 left In Stock, Usually ships within 1-2 business days
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GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: 34198Gates
2007-2012, 2016 GMC Sierra 2500 HD Gates Engine Coolant Thermostat 34198
6.75, Save 39%   NEW ITEM
OEM: 34198, Item: 675485
  In Stock, Usually ships within 1-2 business days
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GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: 12TP13EACDelco
2001-2006 GMC Sierra 2500 HD ACDelco Engine Coolant Thermostat 12TP13E
6.85, Save 40%   NEW ITEM
OEM: 12TP13E, Item: 890425
  In Stock, Usually ships within 1 business day
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Motorad
2001-2003 GMC Sierra 2500 HD Motorad Engine Coolant Thermostat 7267-195
7.35, Save 39%   NEW ITEM
OEM: 7267-195, Item: 1405154
  Only 5 left In Stock, Usually ships within 1-2 business days
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GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: 131-121/131121ACDelco
2001-2006 GMC Sierra 2500 HD ACDelco Engine Coolant Thermostat 131-121
11.55, Save 39%   NEW ITEM
OEM: 131-121, Item: 887723
  Only 4 left In Stock, Usually ships within 1 business day
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Motorad
2001-2003 GMC Sierra 2500 HD Motorad Engine Coolant Thermostat 379-187
13.55, Save 40%   NEW ITEM
OEM: 379-187, Item: 1405048
  In Stock, Usually ships within 1-2 business days
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GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: 33910Gates
2001-2003 GMC Sierra 2500 HD Gates Engine Coolant Thermostat 33910
14.45, Save 40%   NEW ITEM
OEM: 33910, Item: 672188
  In Stock, Usually ships within 1-2 business days
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GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: 15158Stant
2012-2017 GMC Sierra 2500 HD Stant Engine Coolant Thermostat 15158
15.75, Save 39%   NEW ITEM
OEM: 15158, Item: 403089
  In Stock, Usually ships within 1 business day
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Motorad
2001-2003, 2016 GMC Sierra 2500 HD Motorad Engine Coolant Thermostat 447-185
16.05, Save 39%   NEW ITEM
OEM: 447-185, Item: 1407373
  Only 2 left In Stock, Usually ships within 1 business day
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Vehicle Install Locations: Front

GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: 14298Stant
2001-2006 GMC Sierra 2500 HD Stant Engine Coolant Thermostat 14298
16.35, Save 39%   NEW ITEM
OEM: 14298, Item: 383610
  In Stock, Usually ships within 1 business day
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Motorad
2001-2003, 2016-2017 GMC Sierra 2500 HD Motorad Engine Coolant Thermostat 448-180
16.45, Save 39%   NEW ITEM
OEM: 448-180, Item: 1407374
  Only 2 left In Stock, Usually ships within 1 business day
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Vehicle Install Locations: Rear

GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: 12T84DACDelco
2001-2003 GMC Sierra 2500 HD ACDelco Engine Coolant Thermostat 12T84D
18.15, Save 39%   NEW ITEM
OEM: 12T84D, Item: 885191
  In Stock, Usually ships within 1 business day
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GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: 131-156/131156ACDelco
2004-2006 GMC Sierra 2500 HD ACDelco Engine Coolant Thermostat 131-156
18.25, Save 39%   NEW ITEM
OEM: 131-156, Item: 887733
  In Stock, Usually ships within 1 business day
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GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: 33947Gates
2001-2016 GMC Sierra 2500 HD Gates Engine Coolant Thermostat 33947
18.65, Save 40%   NEW ITEM
OEM: 33947, Item: 621070
  Only 6 left In Stock, Usually ships within 1-2 business days
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Vehicle Install Locations: Rear

GMC Sierra 2500 HD Thermostat, 82C / 180F, OEM: 812571261082Motorad
2004-2006 GMC Sierra 2500 HD Motorad Thermostat, 82C / 180F 812571261082
18.65, Save 39%   NEW ITEM
OEM: 812571261082, Item: 90070
  In Stock, Usually ships within 1 business day
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GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: 14728Stant
2012-2017 GMC Sierra 2500 HD Stant Engine Coolant Thermostat 14728
18.95, Save 39%   NEW ITEM
OEM: 14728, Item: 383647
  In Stock, Usually ships within 1 business day
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Vehicle Install Locations: Front

GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: 14738Stant
2012-2017 GMC Sierra 2500 HD Stant Engine Coolant Thermostat 14738
19.65, Save 39%   NEW ITEM
OEM: 14738, Item: 383648
  In Stock, Usually ships within 1 business day
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Vehicle Install Locations: Rear

GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: 12T99DACDelco
2001-2016 GMC Sierra 2500 HD ACDelco Engine Coolant Thermostat 12T99D
19.75, Save 39%   NEW ITEM
OEM: 12T99D, Item: 885195
  Only 5 left In Stock, Usually ships within 1 business day
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Vehicle Install Locations: Front

GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: 12T100DACDelco
2001-2017 GMC Sierra 2500 HD ACDelco Engine Coolant Thermostat 12T100D
19.85, Save 39%  
OEM: 12T100D, Item: 885138
  Only 9 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Rear

GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: 12T121DACDelco
2001-2006 GMC Sierra 2500 HD ACDelco Engine Coolant Thermostat 12T121D
16.59, Save 49%   NEW ITEMPOPULAR
OEM: 12T121D, Item: 885144
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Gates Engine Coolant Thermostat, OEM: 33946Gates
2001-2016 GMC Sierra 2500 HD Gates Engine Coolant Thermostat
20.15, Save 40%   NEW ITEM
OEM: 33946, Item: 243078
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

Vehicle Install Locations: Front

Motorad
2001-2003 GMC Sierra 2500 HD Motorad Engine Coolant Thermostat 379-160
21.45, Save 39%   NEW ITEM
OEM: 379-160, Item: 1405047
  Only 5 left In Stock, Usually ships within 1-2 business days
Select year, make, model above to verify this part fits your vehicle

Motorad
2008-2017 GMC Sierra 2500 HD Motorad Engine Coolant Thermostat 523-190
25.25, Save 39%   NEW ITEM
OEM: 523-190, Item: 1405103
  Only 6 left In Stock, Usually ships within 1-2 business days
Select year, make, model above to verify this part fits your vehicle

Motorad
2001-2003, 2016-2017 GMC Sierra 2500 HD Motorad Engine Coolant Thermostat 447448
30.85, Save 39%   NEW ITEM
OEM: 447448, Item: 1405076
  Only 5 left In Stock, Usually ships within 1-2 business days
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GMC Sierra 2500 HD Engine Coolant Thermostat / Water Inlet Assembly, OEM: 15-10412/1510412ACDelco
2001-2003 GMC Sierra 2500 HD ACDelco Engine Coolant Thermostat / Water Inlet Assembly 15-10412
33.85, Save 39%   NEW ITEM
OEM: 15-10412, Item: 885351
  Only 7 left In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Engine Coolant Thermostat / Water Inlet Assembly, OEM: 15-11057/1511057ACDelco
2001-2006 GMC Sierra 2500 HD ACDelco Engine Coolant Thermostat / Water Inlet Assembly 15-11057
33.85, Save 39%   NEW ITEM
OEM: 15-11057, Item: 885406
  In Stock, Usually ships within 1 business day
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GMC Sierra 2500 HD Engine Coolant Thermostat Kit, OEM: 131-160/131160ACDelco
2007-2017 GMC Sierra 2500 HD ACDelco Engine Coolant Thermostat Kit 131-160
34.15, Save 39%  
OEM: 131-160, Item: 887735
  In Stock, Usually ships within 1 business day
Select year, make, model above to verify this part fits your vehicle

GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: 34702Gates
2001-2006 GMC Sierra 2500 HD Gates Engine Coolant Thermostat 34702
34.25, Save 39%   NEW ITEM
OEM: 34702, Item: 1159563
  Only 2 left In Stock, Usually ships within 1-2 business days
Select year, make, model above to verify this part fits your vehicle

ACDelco
2001-2017 GMC Sierra 2500 HD ACDelco Engine Coolant Thermostat Kit 131-131
34.25, Save 39%   NEW ITEM
OEM: 131-131, Item: 887727
  In Stock, Usually ships within 1 business day
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ACDelco
2001-2017 GMC Sierra 2500 HD ACDelco Engine Coolant Thermostat Kit 131-163
39.15, Save 39%   NEW ITEM
OEM: 131-163, Item: 887736
  In Stock, Usually ships within 1 business day
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Motorad
2001-2006 GMC Sierra 2500 HD Motorad Engine Coolant Thermostat 524KT
40.95, Save 39%   NEW ITEM
OEM: 524KT, Item: 1407592
  Only 4 left In Stock, Usually ships within 1 business day
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GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: MMTS-MUS-86/MMTSMUS86Mishimoto
Mishimoto Engine Coolant Thermostat MMTS-MUS-86
Add for Price, Save 36%   NEW ITEM
OEM: MMTS-MUS-86, Item: 1335775
  Only 2 left In Stock, Usually ships within 1-2 business days
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GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: MMTS-VET-05/MMTSVET05Mishimoto
2007, 2011, 2015 GMC Sierra 2500 HD Mishimoto Engine Coolant Thermostat MMTS-VET-05
Add for Price, Save 36%   NEW ITEM
OEM: MMTS-VET-05, Item: 1339168
  Only 2 left In Stock, Usually ships within 1-2 business days
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GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: MMTS-VET-97L/MMTSVET97LMishimoto
2001-2002, 2004 GMC Sierra 2500 HD Mishimoto Engine Coolant Thermostat MMTS-VET-97L
Add for Price, Save 36%   NEW ITEM
OEM: MMTS-VET-97L, Item: 1335438
  Only 7 left In Stock, Usually ships within 1-2 business days
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Mishimoto
2001-2002, 2004, 2007 GMC Sierra 2500 HD Mishimoto Engine Coolant Thermostat MMTS-CHV-01DH
Add for Price, Save 36%   NEW ITEM
OEM: MMTS-CHV-01DH, Item: 1335238
  Only 7 left In Stock, Usually ships within 1-2 business days
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GMC Sierra 2500 HD Engine Coolant Thermostat, OEM: MMTS-CHV-01DL/MMTSCHV01DLMishimoto
2001-2002, 2004, 2007 GMC Sierra 2500 HD Mishimoto Engine Coolant Thermostat MMTS-CHV-01DL
Add for Price, Save 36%   NEW ITEM
OEM: MMTS-CHV-01DL, Item: 1335237
  In Stock, Usually ships within 1-2 business days
Select year, make, model above to verify this part fits your vehicle