2020-2021, 2023 GMC Sierra 3500 HD SLT 6.6L V8. 2020-2021, 2023 GMC Sierra 3500 HD SLE 6.6L V8. 2020-2021, 2023 GMC Sierra 3500 HD AT4 6.6L V8. 2020-2021, 2023 GMC Sierra 3500 HD Denali 6.6L V8. Detailed Notes: Heater Blower Motor Resistor for Chevrolet Silverado 1500 Silverado 2500 HD GMC.
