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Dorman 604-101 HVAC Blend Door Actuator - Lower Main or MainOE Quality 60-Day Returns
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Part #: 604-101

Dorman 604-101 HVAC Blend Door Actuator - Lower Main or Main

Lower Main
⚙️ 52 vehicles fit this part
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🚗Fitment: Cadillac, Chevrolet, and GMC, Escalade, Escalade EXT, Avalanche 1500, Avalanche 2500, Silverado 1500, Silverado 1500 HD, Silverado 2500, Silverado 2500 HD, Silverado 3500, Suburban 1500, Suburban 2500, Tahoe, Sierra 1500, Sierra 1500 HD, Sierra 2500, Sierra 2500 HD, Sierra 3500, Yukon, Yukon XL 1500, and Yukon XL 2500
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Overview of Dorman HVAC Blend Door Actuator 604-101

The Dorman HVAC Blend Door Actuator 604-101 is designed to provide reliable control of the airflow blend doors in your vehicle's heating and cooling system. This actuator features a rotary switch activation type and is constructed from durable plastic to ensure consistent performance in Cadillac, Chevrolet, and GMC models.

  • Rotary switch activation for precise airflow control
  • Durable plastic construction for long-lasting use
  • Compatible with multiple GM trucks and SUVs
  • Includes one actuator per package
  • OEM-quality replacement part number 604-101

Detailed Product Description

The Dorman 604-101 HVAC Blend Door Actuator is engineered to replace faulty or worn actuators in select Cadillac, Chevrolet, and GMC vehicles. Its rotary switch activation type allows for smooth and accurate adjustment of the blend door position, regulating the mix of hot and cold air inside the cabin. Made from high-quality plastic materials, this actuator withstands the thermal and mechanical stresses typical in HVAC systems. It is compatible with a range of models including the Chevrolet Avalanche 1500 and 2500, Silverado 1500, 2500, and 3500 series, GMC Sierra 1500 through 3500 HD, as well as Cadillac Escalade and Escalade EXT, and full-size SUVs like the Suburban, Tahoe, Yukon, and Yukon XL variants.

Common HVAC Issues This Actuator Addresses

  • Inconsistent cabin temperature due to blend door malfunction
  • Unresponsive or stuck HVAC blend door controls
  • Unusual noises from the HVAC system when adjusting temperature
  • Failure to switch between heating and cooling modes properly
  • Intermittent airflow problems related to blend door positioning

Installation Notes and Tips

  • Ensure vehicle compatibility by verifying make, model, and year before installation
  • Disconnect the battery to prevent electrical shorts during replacement
  • Access the blend door actuator behind the dashboard or glove box area as per vehicle service manual
  • Handle the plastic actuator carefully to avoid damage during installation
  • Test the HVAC system after installation to confirm proper operation of the blend door

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications, providing dependable performance for your HVAC system. The 604-101 blend door actuator undergoes rigorous quality control to ensure durability and fitment accuracy. This part is backed by Dorman's limited warranty, covering defects in material and workmanship under normal use conditions.

BrandDorman
Part Number604-101
MaterialPlastic
Package ContentsActuator
Switch Activation TypeRotary

This part fits 52 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2002CadillacEscaladeLower MainTemperature control HVAC blend door actuator for box packaging.
2002CadillacEscalade EXTLower MainTemperature control HVAC blend door actuator for box packaging.
2002ChevroletAvalanche 1500MainTemperature control HVAC blend door actuator for box packaging.
2002ChevroletAvalanche 2500MainTemperature control HVAC blend door actuator for box packaging.
2002ChevroletSilverado 1500MainTemperature control HVAC blend door actuator for box packaging.
2002ChevroletSilverado 1500 HDMainTemperature control HVAC blend door actuator for box packaging.
2002ChevroletSilverado 2500Lower MainTemperature control HVAC blend door actuator for box packaging.
2002ChevroletSilverado 2500 HDLower MainTemperature control HVAC blend door actuator for box packaging.
2002ChevroletSilverado 3500Lower MainTemperature control HVAC blend door actuator for box packaging.
2002ChevroletSuburban 1500MainTemperature; Exc. Dual Zone Temperature Control; Packaging Type: Box
2002ChevroletSuburban 2500MainTemperature; Exc. Dual Zone Temperature Control; Packaging Type: Box
2002ChevroletTahoeLower MainTemperature control HVAC blend door actuator for box packaging.
2002GMCSierra 1500Lower MainTemperature control HVAC blend door actuator for box packaging.
2002GMCSierra 1500 HDMainTemperature control HVAC blend door actuator for box packaging.
2002GMCSierra 2500Lower MainTemperature control HVAC blend door actuator for box packaging.
2002GMCSierra 2500 HDLower MainTemperature control HVAC blend door actuator for box packaging.
2002GMCSierra 3500Lower MainTemperature control HVAC blend door actuator for box packaging.
2002GMCYukonLower MainTemperature control HVAC blend door actuator for box packaging.
2002GMCYukon XL 1500MainTemperature; Exc. Dual Zone Temperature Control; Packaging Type: Box
2002GMCYukon XL 2500MainTemperature; Exc. Dual Zone Temperature Control; Packaging Type: Box
2001ChevroletSilverado 1500MainTemperature control HVAC blend door actuator for box packaging.
2001ChevroletSilverado 1500 HDMainTemperature control HVAC blend door actuator for box packaging.
2001ChevroletSilverado 2500Lower MainTemperature control HVAC blend door actuator for box packaging.
2001ChevroletSilverado 2500 HDLower MainTemperature control HVAC blend door actuator for box packaging.
2001ChevroletSilverado 3500Lower MainTemperature control HVAC blend door actuator for box packaging.
2001ChevroletSuburban 1500MainTemperature; Exc. Dual Zone Temperature Control; Packaging Type: Box
2001ChevroletSuburban 2500MainTemperature; Exc. Dual Zone Temperature Control; Packaging Type: Box
2001ChevroletTahoeLower MainTemperature control HVAC blend door actuator for box packaging.
2001GMCSierra 1500Lower MainTemperature control HVAC blend door actuator for box packaging.
2001GMCSierra 1500 HDMainTemperature control HVAC blend door actuator for box packaging.
2001GMCSierra 2500Lower MainTemperature control HVAC blend door actuator for box packaging.
2001GMCSierra 2500 HDLower MainTemperature control HVAC blend door actuator for box packaging.
2001GMCSierra 3500Lower MainTemperature control HVAC blend door actuator for box packaging.
2001GMCYukonLower MainTemperature control HVAC blend door actuator for box packaging.
2001GMCYukon XL 1500MainTemperature; Exc. Dual Zone Temperature Control; Packaging Type: Box
2001GMCYukon XL 2500MainTemperature; Exc. Dual Zone Temperature Control; Packaging Type: Box
2000ChevroletSilverado 1500MainTemperature control HVAC blend door actuator for box packaging.
2000ChevroletSilverado 2500Lower MainTemperature control HVAC blend door actuator for box packaging.
2000ChevroletSuburban 15005.3LV8Lower MainTemperature control HVAC blend door actuator for box packaging.
2000ChevroletSuburban 2500MainTemperature control HVAC blend door actuator for box packaging.
2000ChevroletTahoe5.3LV8Lower MainTemperature control HVAC blend door actuator for box packaging.
2000ChevroletTahoe4.8LV8Lower MainTemperature control HVAC blend door actuator for box packaging.
2000GMCSierra 1500Lower MainTemperature control HVAC blend door actuator for box packaging.
2000GMCSierra 2500Lower MainTemperature control HVAC blend door actuator for box packaging.
2000GMCYukon5.3LV8Lower MainTemperature control HVAC blend door actuator for box packaging.
2000GMCYukon4.8LV8Lower MainTemperature control HVAC blend door actuator for box packaging.
2000GMCYukon XL 1500MainTemperature; Exc. Dual Zone Temperature Control; Packaging Type: Box
2000GMCYukon XL 2500MainTemperature; Exc. Dual Zone Temperature Control; Packaging Type: Box
1999ChevroletSilverado 1500MainTemperature control HVAC blend door actuator for box packaging.
1999ChevroletSilverado 2500Lower MainTemperature control HVAC blend door actuator for box packaging.
1999GMCSierra 1500Lower MainTemperature control HVAC blend door actuator for box packaging.
1999GMCSierra 2500Lower MainTemperature control HVAC blend door actuator for box packaging.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

15-721393753952474810604101ADR102F04004GM0613013SK604101 

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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