Dorman 604-158 HVAC Blend Door Actuator - Main
OE Quality 60-Day Returns
Dorman

Dorman 604-158 HVAC Blend Door Actuator - Main

Brand Dorman 604-158
Position Main
Material Plastic
Package Contents Actuator
Switch Activation Type Rotary
Fits Cadillac · 11 vehicles

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

Rotary design. Provides smooth, accurate HVAC blend door control.

Plastic construction. Lightweight actuator built for dependable operation.

Cross-references 25740409, ADS173 and F04113 for the same application. See all 3.

$51.45Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $51.45
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

Dorman 604-158 HVAC Blend Door Actuator

This Dorman HVAC blend door actuator is a rotary-style replacement for specific Cadillac climate control systems. It is built with a plastic housing and is engineered to match the fit and performance of the original actuator on select Cadillac SRX and Cadillac CTS applications.

  • Rotary switch activation type for HVAC blend door control
  • Plastic construction for direct replacement use
  • Replacement actuator for the main HVAC position
  • Fits Cadillac SRX and Cadillac CTS models with outside air requirements
  • Part number 604-158 for application matching and catalog lookup

Application Details

Compatible With 2004-2009 Cadillac SRX, Main, for vehicles requiring outside air. Compatible With 2003-2007 Cadillac CTS, Main, for vehicles requiring outside air. This HVAC blend door actuator helps restore proper temperature blend control in the heating and air conditioning system when the original unit is worn or no longer responds correctly. Part number 604-158 is also referenced for the same application under 25740409 and ADS173.

Common Problems This Part Can Address

  • Incorrect cabin temperature from a blend door that no longer moves properly
  • HVAC air distribution stuck on one temperature setting
  • Clicking or repeated actuator noise from a failing internal gear or motor
  • Loss of response from the climate control blend door circuit
  • Uneven heating or cooling in Cadillac SRX and Cadillac CTS vehicles

Installation Notes

Verify the vehicle year, model, and HVAC configuration before installation. This actuator is for the main position and should be matched to vehicles requiring outside air. Confirm connector style, mounting location, and system operation after installation to ensure the blend door moves through its full range. Part number 604-158 should be compared against the original unit and any existing cross-reference numbers before ordering.

Quality Assurance

Dorman states that this heater blend door actuator is precision-engineered to match the quality and performance of the original part on specific vehicle applications. It is built as an OE-style replacement for direct fitment on the listed Cadillac models.

Related reading

This part fits 11 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2009CadillacSRXMainFits vehicles requiring outside air, comes in a box.
2008CadillacSRXMainFits vehicles requiring outside air, comes in a box.
2007CadillacCTSMainFits vehicles requiring outside air, comes in a box.
2007CadillacSRXMainFits vehicles requiring outside air, comes in a box.
2006CadillacCTSMainFits vehicles requiring outside air, comes in a box.
2006CadillacSRXMainFits vehicles requiring outside air, comes in a box.
2005CadillacCTSMainFits vehicles requiring outside air, comes in a box.
2005CadillacSRXMainFits vehicles requiring outside air, comes in a box.
2004CadillacCTSMainFits vehicles requiring outside air, comes in a box.
2004CadillacSRXMainFits vehicles requiring outside air, comes in a box.
2003CadillacCTSMainFits vehicles requiring outside air, comes in a box.
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
25740409ADS173F04113