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2021 GMC Sierra 2500 HD
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2021 GMC Sierra 2500 HD

2021 GMC Sierra 2500 HD Climate Control Units

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Climate Control Unit - Sold individually
AC Delco®
Climate Control Unit - Sold individually
Part Number: AC84692231
Guaranteed to Fit
$101.99
Vehicle Fitment
  • 2021 GMC Sierra 2500 HD Base All Engines 4-Door, Extended Cab Pickup, Semiautomatic Front A/C(C4P), Front A/C - Electronic Controls(C67), Electric Rear Window Defogger(C49), Seat Heater(KA1)
  • 2021 GMC Sierra 2500 HD AT4 All Engines 4-Door, Crew Cab Pickup, Semiautomatic Front A/C(C4P), Front A/C - Electronic Controls(C67), Electric Rear Window Defogger(C49), Seat Heater(KA1)
  • 2021 GMC Sierra 2500 HD SLT All Engines 4-Door, Crew Cab Pickup, Semiautomatic Front A/C(C4P), Front A/C - Electronic Controls(C67), Electric Rear Window Defogger(C49), Seat Heater(KA1)
  • 2021 GMC Sierra 2500 HD Denali All Engines 4-Door, Crew Cab Pickup, Semiautomatic Front A/C(C4P), Front A/C - Electronic Controls(C67), Electric Rear Window Defogger(C49), Seat Heater(KA1)
  • 2021 GMC Sierra 2500 HD SLE All Engines 2-Door, Standard Cab Pickup, Semiautomatic Front A/C(C4P), Front A/C - Electronic Controls(C67), Electric Rear Window Defogger(C49), Seat Heater(KA1)
Product Details
Warranty : 24-months or unlimited mile AC Delco limited warrantyQuantity Sold : Sold individuallyProp 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.

Climate Control Unit - Sold individually
AC Delco®
Climate Control Unit - Sold individually
Part Number: AC84692243
Guaranteed to Fit
$141.99
Vehicle Fitment
  • 2021 GMC Sierra 2500 HD Base All Engines 2-Door, Standard Cab Pickup, A/C Frt Auto/Aux Cont(CJ2), Electric Rear Window Defogger(C49), Except Seat Heater(KA1), Vented Front Seat Heater(KQV)
  • 2021 GMC Sierra 2500 HD AT4 All Engines 4-Door, Crew Cab Pickup, A/C Frt Auto/Aux Cont(CJ2), Electric Rear Window Defogger(C49), Except Seat Heater(KA1), Vented Front Seat Heater(KQV)
  • 2021 GMC Sierra 2500 HD SLT All Engines 4-Door, Crew Cab Pickup, A/C Frt Auto/Aux Cont(CJ2), Electric Rear Window Defogger(C49), Except Seat Heater(KA1), Vented Front Seat Heater(KQV)
  • 2021 GMC Sierra 2500 HD Denali All Engines 4-Door, Crew Cab Pickup, A/C Frt Auto/Aux Cont(CJ2), Electric Rear Window Defogger(C49), Except Seat Heater(KA1), Vented Front Seat Heater(KQV)
  • 2021 GMC Sierra 2500 HD SLE All Engines 4-Door, Extended Cab Pickup, A/C Frt Auto/Aux Cont(CJ2), Electric Rear Window Defogger(C49), Except Seat Heater(KA1), Vented Front Seat Heater(KQV)
Product Details
Warranty : 24-months or unlimited mile AC Delco limited warrantyQuantity Sold : Sold individuallyProp 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.

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Helpful Automotive Resources

What Does Your Car’s Auto A/C Button Do?
What Does Your Car’s Auto A/C Button Do?Blower fan speed is the HVAC system’s fan that draws air from outside the car (NORM) or inside the car (MAX/Recirc), then moves that air through the evaporator out into the passenger compartment through the vents on the dash called “the register.” If warm air is needed, the blend door
What Is Climate Control?
What Is Climate Control?Vehicles without automatic climate control A/C systems typically have only a mode selector, a fan speed and thermostat knob to control the cabin temperature. The fan speed knob typically has four numbered settings, with the higher setting blowing more air through the vents. The thermostat knob’s position is typically proportional