Dorman 604-188 HVAC Blend Door Actuator - Main
OE Quality 60-Day Returns
Dorman

Dorman 604-188 HVAC Blend Door Actuator - Main

Brand Dorman 604-188
Position Main
Material Plastic
Package Contents Actuator
Switch Activation Type Rotary
Fits Hummer, Saturn, and Pontiac · 30 vehicles

OE-style replacement. Precision-engineered to match original quality and performance.

Rotary activation. Smooth, reliable control for the HVAC blend door actuator.

Plastic construction. Lightweight design for dependable HVAC operation.

Cross-references 10397365 and APBDA0233 for the same application. See all 2.

$37.67Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $37.67
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all HVAC Blend Door Actuator options

HVAC Blend Door Actuator for GM Applications

This Dorman HVAC blend door actuator is built for specific Hummer, Saturn, and Pontiac vehicles that use a rotary-style temperature or mode control actuator. Part number 604-188 is engineered to match the fit and function of the original unit on listed applications, helping restore proper HVAC door movement.

  • Rotary switch activation type for HVAC blend door control
  • Plastic housing construction
  • Includes actuator only
  • Direct replacement for listed Hummer H3, Hummer H3T, Saturn Sky, and Pontiac Solstice applications
  • Cross-references OE and aftermarket numbers 10397365 and APBDA0233

Detailed Product Information

Dorman 604-188 is an HVAC heater blend door actuator designed for the main position on select 2006-2010 Hummer H3, 2009-2010 Hummer H3T, 2007-2010 Saturn Sky, and 2006-2009 Pontiac Solstice models. It is precision-engineered to match the original actuator’s quality and performance, making it a practical replacement when the factory unit no longer moves the blend door correctly. This part number 604-188 is a direct-fit solution for vehicles that rely on rotary actuator control for temperature or mode selection.

This part cross-references OE and aftermarket numbers 10397365 and APBDA0233 for the same application.

Common HVAC Problems It Can Address

  • Incorrect cabin temperature control
  • Airflow stuck on one vent mode
  • HVAC door movement that is slow, erratic, or unresponsive
  • Loss of proper blend door positioning in the main HVAC box
  • Heating and cooling output that does not match the control setting

Installation Notes and Tips

Verify the vehicle year, make, model, and main position before ordering. This actuator uses a rotary activation design and is intended for the listed Hummer H3, Hummer H3T, Saturn Sky, and Pontiac Solstice applications. Compare the original connector, mounting points, and actuator style to confirm a proper match before installation.

Quality Assurance

Dorman manufactures this replacement actuator to align with the original part’s fit and performance on the specified vehicles. The design focuses on restoring OEM-style HVAC operation for the listed applications.

Related reading

This part fits 30 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2010HummerH3MainTemperature control HVAC blend door actuator for box packaging.
2010HummerH3MainHVAC Blend Door Actuator for mode selection in box packaging.
2010HummerH3TMainHVAC Blend Door Actuator for mode selection in box packaging.
2010HummerH3TMainTemperature control HVAC blend door actuator for box packaging.
2010SaturnSkyMainHVAC Blend Door Actuator for mode selection in box packaging.
2010SaturnSkyMainTemperature control HVAC blend door actuator for box packaging.
2009HummerH3MainTemperature control HVAC blend door actuator for box packaging.
2009HummerH3MainHVAC Blend Door Actuator for mode selection in box packaging.
2009HummerH3TMainHVAC Blend Door Actuator for mode selection in box packaging.
2009HummerH3TMainTemperature control HVAC blend door actuator for box packaging.
2009PontiacSolsticeMainHVAC Blend Door Actuator for mode selection in box packaging.
2009PontiacSolsticeMainTemperature control HVAC blend door actuator for box packaging.
2009SaturnSkyMainHVAC Blend Door Actuator for mode selection in box packaging.
2009SaturnSkyMainTemperature control HVAC blend door actuator for box packaging.
2008HummerH3MainTemperature control HVAC blend door actuator for box packaging.
2008HummerH3MainHVAC Blend Door Actuator for mode selection in box packaging.
2008PontiacSolsticeMainHVAC Blend Door Actuator for mode selection in box packaging.
2008PontiacSolsticeMainTemperature control HVAC blend door actuator for box packaging.
2008SaturnSkyMainHVAC Blend Door Actuator for mode selection in box packaging.
2008SaturnSkyMainTemperature control HVAC blend door actuator for box packaging.
2007HummerH3MainTemperature control HVAC blend door actuator for box packaging.
2007HummerH3MainHVAC Blend Door Actuator for mode selection in box packaging.
2007PontiacSolsticeMainHVAC Blend Door Actuator for mode selection in box packaging.
2007PontiacSolsticeMainTemperature control HVAC blend door actuator for box packaging.
2007SaturnSkyMainHVAC Blend Door Actuator for mode selection in box packaging.
2007SaturnSkyMainTemperature control HVAC blend door actuator for box packaging.
2006HummerH3MainTemperature control HVAC blend door actuator for box packaging.
2006HummerH3MainHVAC Blend Door Actuator for mode selection in box packaging.
2006PontiacSolsticeMainHVAC Blend Door Actuator for mode selection in box packaging.
2006PontiacSolsticeMainTemperature control HVAC blend door actuator for box packaging.
Directly replaces or cross-references 2 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
10397365APBDA0233