Dorman 600-104 HVAC Heater Control Valve Solenoid

Brand Dorman 600-104
Electrical or Mechanical Electrical
Item Grade Standard Replacement
Package Contents Actuator Valve
Fits Chevrolet, GMC, Oldsmobile, and Cadillac · 120 vehicles

Standard replacement. Directly replaces the original equipment actuator valve.

Electrical operation. Uses an electrical design for HVAC control.

Heater control valve solenoid. A direct-fit HVAC component for valve actuation.

Cross-references Cardone New 83-1003A, 15-5877 and 15070012 for the same application. See all 4.

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Dorman 600-104 HVAC Heater Control Valve Solenoid

Dorman 600-104 is an electrical HVAC heater control valve solenoid that directly replaces the original equipment valve on select GM trucks and SUVs. It is a standard replacement for restoring heater coolant flow control in vehicles such as Chevrolet Astro, Blazer, Tahoe, and GMC Yukon applications.

Key Features

  • Electrical actuator valve for HVAC heater control
  • Standard replacement part for OE-style service
  • Direct replacement for the original equipment valve on listed applications
  • Package contents: actuator valve
  • Part number: 600-104

Detailed Description

This HVAC heater control valve solenoid is built for vehicles that use an electrically operated valve to manage heater coolant flow. Dorman 600-104 is listed for a wide range of Chevrolet, GMC, Cadillac, and Oldsmobile applications, including Fits 1996-2005 Chevrolet Astro, N/A; Fits 1999-2005 Chevrolet Blazer, N/A; and Fits 1995-2000 GMC Yukon, N/A. It also covers Fits 1995-2000 Chevrolet Tahoe, N/A and Fits 1995-1999 Chevrolet C1500 Suburban, N/A. This part cross-references Cardone New 83-1003A for the same application.

Common Issues This Part May Address

  • Loss of heater coolant flow control through the HVAC system
  • Inconsistent cabin heat output
  • Faulty electrical actuator operation at the heater control valve
  • Replacement needs after valve wear or electrical failure
  • Restoration of proper HVAC heater valve function on listed GM platforms

Installation Notes and Tips

Verify the vehicle’s RPO codes and application details before ordering, especially on Chevrolet Astro and GMC Safari models with C36 auxiliary heater requirements and without YF7 recreation vehicle upfitter package. Confirm the electrical connector and valve style match the original unit before installation. Use the vehicle service information for the correct HVAC system procedure and coolant handling steps.

Quality Assurance

Dorman supplies this part as a standard replacement component for direct OE-style service on the listed applications. Part number 600-104 is engineered to match the original valve function for the specified vehicles.

This part fits 120 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelDrive TypeLitersCylindersPositionNotes
2005ChevroletAstroN/Aw/RPO Code C36 (Auxiliary Heater); wo/RPO Code YF7 (Recreation Vehicle Upfitter Package)
2005ChevroletBlazer4WDN/A
2005GMCSafariN/Aw/RPO Code C36 (Auxiliary Heater); wo/RPO Code YF7 (Recreation Vehicle Upfitter Package)
2004ChevroletAstroN/Aw/RPO Code C36 (Auxiliary Heater); wo/RPO Code YF7 (Recreation Vehicle Upfitter Package)
2004ChevroletBlazer4WDN/A
2004ChevroletS10N/A
2004GMCSafariN/Aw/RPO Code C36 (Auxiliary Heater); wo/RPO Code YF7 (Recreation Vehicle Upfitter Package)
2004GMCSonomaN/A
2003ChevroletAstroN/Aw/RPO Code C36 (Auxiliary Heater); wo/RPO Code YF7 (Recreation Vehicle Upfitter Package)
2003ChevroletBlazer4WDN/A
2003ChevroletS104WDN/A
2003GMCSafariN/Aw/RPO Code C36 (Auxiliary Heater); wo/RPO Code YF7 (Recreation Vehicle Upfitter Package)
2003GMCSonoma4WDN/A
2002ChevroletAstroN/Aw/RPO Code C36 (Auxiliary Heater); wo/RPO Code YF7 (Recreation Vehicle Upfitter Package)
2002ChevroletBlazer4WDN/A
2002ChevroletS104WDN/A
2002GMCSafariN/Aw/RPO Code C36 (Auxiliary Heater); wo/RPO Code YF7 (Recreation Vehicle Upfitter Package)
2002GMCSonoma4WDN/A
2002OldsmobileBravadaAWDN/A
2001ChevroletAstroN/Aw/RPO Code C36 (Auxiliary Heater); wo/RPO Code YF7 (Recreation Vehicle Upfitter Package)
2001ChevroletBlazer4WDN/A
2001ChevroletS104WDN/A
2001GMCJimmy4WDN/A
2001GMCSafariN/Aw/RPO Code C36 (Auxiliary Heater); wo/RPO Code YF7 (Recreation Vehicle Upfitter Package)
2001GMCSonoma4WDN/A
2001OldsmobileBravadaN/A
2000CadillacEscaladeN/A
2000ChevroletAstroN/Aw/RPO Code C36 (Auxiliary Heater); wo/RPO Code YF7 (Recreation Vehicle Upfitter Package)
2000ChevroletBlazer4WDN/A
2000ChevroletS104WDN/A
2000ChevroletTahoe5.7LV8N/A
2000GMCJimmy4WDN/A
2000GMCSafariN/Aw/RPO Code C36 (Auxiliary Heater); wo/RPO Code YF7 (Recreation Vehicle Upfitter Package)
2000GMCSonoma4WDN/A
2000GMCYukon5.7LV8N/A
2000OldsmobileBravadaN/A
1999CadillacEscaladeN/A
1999ChevroletAstroN/Aw/RPO Code C36 (Auxiliary Heater); wo/RPO Code YF7 (Recreation Vehicle Upfitter Package)
1999ChevroletBlazer4WDN/A
1999ChevroletC1500 Suburban5.7LV8N/A
1999ChevroletC2500 Suburban7.4LV8N/A
1999ChevroletC2500 Suburban5.7LV8N/A
1999ChevroletK1500 Suburban5.7LV8N/A
1999ChevroletK2500 Suburban7.4LV8N/A
1999ChevroletK2500 Suburban5.7LV8N/A
1999ChevroletS104WDN/A
1999ChevroletTahoe5.7LV8N/A
1999GMCC1500 Suburban5.7LV8N/A
1999GMCC2500 Suburban7.4LV8N/A
1999GMCC2500 Suburban5.7LV8N/A
1999GMCJimmy4WDN/A
1999GMCK1500 Suburban5.7LV8N/A
1999GMCK2500 Suburban7.4LV8N/A
1999GMCK2500 Suburban5.7LV8N/A
1999GMCSafariN/Aw/RPO Code C36 (Auxiliary Heater); wo/RPO Code YF7 (Recreation Vehicle Upfitter Package)
1999GMCSonoma4WDN/A
1999GMCYukonN/A
1999OldsmobileBravadaN/A
1998ChevroletAstroN/Aw/RPO Code C36 (Auxiliary Heater); wo/RPO Code YF7 (Recreation Vehicle Upfitter Package)
1998ChevroletC1500 Suburban5.7LV8N/A
1998ChevroletC2500 Suburban7.4LV8N/A
1998ChevroletC2500 Suburban5.7LV8N/A
1998ChevroletK1500 Suburban5.7LV8N/A
1998ChevroletK2500 Suburban7.4LV8N/A
1998ChevroletK2500 Suburban5.7LV8N/A
1998ChevroletTahoe5.7LV8N/A
1998GMCC1500 Suburban5.7LV8N/A
1998GMCC2500 Suburban7.4LV8N/A
1998GMCC2500 Suburban5.7LV8N/A
1998GMCK1500 Suburban5.7LV8N/A
1998GMCK2500 Suburban7.4LV8N/A
1998GMCK2500 Suburban5.7LV8N/A
1998GMCSafariN/Aw/RPO Code C36 (Auxiliary Heater); wo/RPO Code YF7 (Recreation Vehicle Upfitter Package)
1998GMCYukonN/A
1997ChevroletAstroN/Aw/RPO Code C36 (Auxiliary Heater); wo/RPO Code YF7 (Recreation Vehicle Upfitter Package)
1997ChevroletC1500 Suburban5.7LV8N/A
1997ChevroletC2500 Suburban7.4LV8N/A
1997ChevroletC2500 Suburban5.7LV8N/A
1997ChevroletK1500 Suburban5.7LV8N/A
1997ChevroletK2500 Suburban7.4LV8N/A
1997ChevroletK2500 Suburban5.7LV8N/A
1997ChevroletTahoe5.7LV8N/A
1997GMCC1500 Suburban5.7LV8N/A
1997GMCC2500 Suburban7.4LV8N/A
1997GMCC2500 Suburban5.7LV8N/A
1997GMCK1500 Suburban5.7LV8N/A
1997GMCK2500 Suburban7.4LV8N/A
1997GMCK2500 Suburban5.7LV8N/A
1997GMCSafariN/Aw/RPO Code C36 (Auxiliary Heater); wo/RPO Code YF7 (Recreation Vehicle Upfitter Package)
1997GMCYukon5.7LV8N/A
1996ChevroletAstroN/Aw/RPO Code C36 (Auxiliary Heater); wo/RPO Code YF7 (Recreation Vehicle Upfitter Package)
1996ChevroletC1500 Suburban5.7LV8N/A
1996ChevroletC2500 Suburban7.4LV8N/A
1996ChevroletC2500 Suburban5.7LV8N/A
1996ChevroletK1500 Suburban5.7LV8N/A
1996ChevroletK2500 Suburban7.4LV8N/A
1996ChevroletK2500 Suburban5.7LV8N/A
1996ChevroletTahoe5.7LV8N/A
1996GMCC1500 Suburban5.7LV8N/A
1996GMCC2500 Suburban7.4LV8N/A
1996GMCC2500 Suburban5.7LV8N/A
1996GMCK1500 Suburban5.7LV8N/A
1996GMCK2500 Suburban7.4LV8N/A
1996GMCK2500 Suburban5.7LV8N/A
1996GMCSafariN/Aw/RPO Code C36 (Auxiliary Heater); wo/RPO Code YF7 (Recreation Vehicle Upfitter Package)
1996GMCYukon5.7LV8N/A
1995ChevroletC1500 Suburban5.7LV8N/A
1995ChevroletC2500 Suburban7.4LV8N/A
1995ChevroletC2500 Suburban5.7LV8N/A
1995ChevroletK1500 Suburban5.7LV8N/A
1995ChevroletK2500 Suburban7.4LV8N/A
1995ChevroletK2500 Suburban5.7LV8N/A
1995ChevroletTahoe5.7LV8N/A
1995GMCC1500 Suburban5.7LV8N/A
1995GMCC2500 Suburban7.4LV8N/A
1995GMCC2500 Suburban5.7LV8N/A
1995GMCK1500 Suburban5.7LV8N/A
1995GMCK2500 Suburban7.4LV8N/A
1995GMCK2500 Suburban5.7LV8N/A
1995GMCYukon5.7LV8N/A
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Cardone New — 83-1003A15-5877150700128150700120