Controls the intake of air into the system, either bringing outside air in or using inside air in recirculation.
BLEND
Controls the temperature of the air flowing from the vents by mixing hot and cold air from the heater core and the evaporator core.
MODE
Controls which vents have air flow, i.e. Floor, Panel or Front, Defrost, or any combination of those.
Diagram:
ACDelco Quality
ACDelco breaks down their premium portfolio of Original Equipment and Aftermarket parts into two tiers: GM Original Equipment and ACDelco Gold.
GM ORIGINAL EQUIPMENT
GM Original Equipment parts are the true OE parts installed during production or validated by GM—designed, engineered, and tested to rigorous standards and backed by General Motors.
ACDELCO GOLD (PROFESSIONAL)
ACDelco Gold parts are the high-quality alternative to OE parts, manufactured to meet GM expectations for fit, form, and function and backed by General Motors.
Which Blend Door Do You Need?
