Take back control of where your cabin air flows with the Four Seasons HVAC Mode Door Actuator 73453. This electric actuator drives the mode door inside the HVAC case, positioning it to route airflow between the dash vents, floor, and defrost outlets on command. It installs as a direct-fit replacement across a range of medium-duty trucks, including the GMC T6500 (1997-2009), Isuzu FTR and FVR (1996-2009), and Chevrolet T6500 (1997-2002 and 2004-2009) — see the Buyer's Guide tab for the full list of covered applications.
- What's in the box: lever arm, gear, cam gear hardware, and linkage as applicable.
- Quality internals: motor, drive gears, electronics, and connections.
- Validated: tested for function, durability, and longevity.
- Built to match: designed to match the original part's fit and function, backed by Four Seasons' 50-plus years of mobile A/C experience.
When a mode door actuator fails, air may keep coming from the wrong outlets, the mode setting may not change, or you may hear clicking or knocking behind the dash. If a failed actuator is the cause, replacing it with 73453 helps restore proper mode-door movement.
Interchange: 604950 · 900453 · BDAB1395 · 1835798290 · 1835798291 · 97721514 · DA1359 · A60453 · MT18849
This part cross-references / interchanges with the following part numbers:
73453, 604950, 900453, BDAB1395, 1835798290, 1835798291, 97721514, DA1359, A60453, MT18849
