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2001 GMC Sierra 1500
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2001 GMC Sierra 1500

2001 GMC Sierra 1500 HVAC Heater Blend Door Actuators

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HVAC Heater Blend Door Actuator, 3-pin, For Air Inlet
Replacement
HVAC Heater Blend Door Actuator, 3-pin, For Air Inlet
Part Number: REPC410211
Guaranteed to Fit
$18.99
Vehicle Fitment
  • 2001 GMC Sierra 1500 C3 8 Cyl 6.0L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SLE 8 Cyl 5.3L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SL 6 Cyl 4.3L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SLE 8 Cyl 4.8L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SLT 6 Cyl 4.3L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SL 8 Cyl 4.8L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SLT 8 Cyl 4.8L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SL 8 Cyl 5.3L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SLT 8 Cyl 5.3L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SLE 6 Cyl 4.3L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
Product Details
Location : MainNotes : 3-Pin Connectors; For Air InletProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Quantity Sold : Sold individuallyWarranty : 1-year Replacement unlimited-mileage warrantyInterchange Part Number : 604120, 89018678, 52474795, 89018373Replaces OE Number : 89018678, 52474795, 89018373Product Fit : Direct FitReturns Policy : 30-Day Return Policy
HVAC Heater Blend Door Actuator - Set of 2
Replacement
HVAC Heater Blend Door Actuator - Set of 2
Part Number: SET-REPC410211-02
Guaranteed to Fit
$35.99
Vehicle Fitment
  • 2001 GMC Sierra 1500 C3 8 Cyl 6.0L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SLE 8 Cyl 5.3L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SL 6 Cyl 4.3L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SLE 8 Cyl 4.8L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SLT 6 Cyl 4.3L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SL 8 Cyl 4.8L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SLT 8 Cyl 4.8L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SL 8 Cyl 5.3L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SLT 8 Cyl 5.3L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SLE 6 Cyl 4.3L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
Product Details
Location : MainComponents : (2) HVAC Heater Blend Door ActuatorProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Quantity Sold : Set of 2Warranty : 1-year Replacement unlimited-mileage warrantyInterchange Part Number : 604120, 89018678, 52474795, 89018373Replaces OE Number : 89018678, 52474795, 89018373Product Fit : Direct FitReturns Policy : 30-Day Return Policy
HVAC Heater Blend Door Actuator - Sold individually
Replacement
HVAC Heater Blend Door Actuator - Sold individually
Part Number: REPC410209
Guaranteed to Fit
$16.99
Vehicle Fitment
  • 2001 GMC Sierra 1500 C3 8 Cyl 6.0L Temperature
  • 2001 GMC Sierra 1500 SL 8 Cyl 4.8L Temperature
  • 2001 GMC Sierra 1500 SLT 8 Cyl 4.8L Temperature
  • 2001 GMC Sierra 1500 SLT 6 Cyl 4.3L Temperature
  • 2001 GMC Sierra 1500 SLE 8 Cyl 5.3L Temperature
  • 2001 GMC Sierra 1500 SL 8 Cyl 5.3L Temperature
  • 2001 GMC Sierra 1500 SL 6 Cyl 4.3L Temperature
  • 2001 GMC Sierra 1500 SLT 8 Cyl 5.3L Temperature
  • 2001 GMC Sierra 1500 SLE 6 Cyl 4.3L Temperature
  • 2001 GMC Sierra 1500 SLE 8 Cyl 4.8L Temperature
Product Details
Location : Main, LowerProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Quantity Sold : Sold individuallyWarranty : 1-year Replacement unlimited-mileage warrantyInterchange Part Number : 604101, 52474810Replaces OE Number : 52474810Product Fit : Direct FitReturns Policy : 30-Day Return Policy
Blend Door Motor - Sold individually
GPD®
Blend Door Motor - Sold individually
Part Number: GPD1712077
Guaranteed to Fit
$44.49
Vehicle Fitment
  • 2001 GMC Sierra 1500 C3 8 Cyl 6.0L Air Inlet Recirculating Actuator
  • 2001 GMC Sierra 1500 SLT 6 Cyl 4.3L Air Inlet Recirculating Actuator
  • 2001 GMC Sierra 1500 SLE 8 Cyl 5.3L Air Inlet Recirculating Actuator
  • 2001 GMC Sierra 1500 SL 6 Cyl 4.3L Air Inlet Recirculating Actuator
  • 2001 GMC Sierra 1500 SLE 8 Cyl 4.8L Air Inlet Recirculating Actuator
  • 2001 GMC Sierra 1500 SL 8 Cyl 4.8L Air Inlet Recirculating Actuator
  • 2001 GMC Sierra 1500 SLT 8 Cyl 4.8L Air Inlet Recirculating Actuator
  • 2001 GMC Sierra 1500 SL 8 Cyl 5.3L Air Inlet Recirculating Actuator
  • 2001 GMC Sierra 1500 SLT 8 Cyl 5.3L Air Inlet Recirculating Actuator
  • 2001 GMC Sierra 1500 SLE 6 Cyl 4.3L Air Inlet Recirculating Actuator
Product Details
Prop 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Quantity Sold : Sold individuallySeries : GPD Heater Blend Door ActuatorWarranty : 1 year GPD limited warrantyProduct Fit : Direct Fit
Heater Blend Door Actuator - Sold individually
GPD®
Heater Blend Door Actuator - Sold individually
Part Number: GPD1712071
Guaranteed to Fit
$40.49
Vehicle Fitment
  • 2001 GMC Sierra 1500 C3 8 Cyl 6.0L Mode Valve
  • 2001 GMC Sierra 1500 SLT 6 Cyl 4.3L Mode Valve
  • 2001 GMC Sierra 1500 SLE 8 Cyl 5.3L Mode Valve
  • 2001 GMC Sierra 1500 SL 6 Cyl 4.3L Mode Valve
  • 2001 GMC Sierra 1500 SLE 8 Cyl 4.8L Mode Valve
  • 2001 GMC Sierra 1500 SL 8 Cyl 4.8L Mode Valve
  • 2001 GMC Sierra 1500 SLT 8 Cyl 4.8L Mode Valve
  • 2001 GMC Sierra 1500 SL 8 Cyl 5.3L Mode Valve
  • 2001 GMC Sierra 1500 SLT 8 Cyl 5.3L Mode Valve
  • 2001 GMC Sierra 1500 SLE 6 Cyl 4.3L Mode Valve
Product Details
Prop 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Quantity Sold : Sold individuallySeries : GPD Heater Blend Door ActuatorWarranty : 1 year GPD limited warrantyProduct Fit : Direct Fit
HVAC Heater Blend Door Actuator - Sold individually
GPD®
HVAC Heater Blend Door Actuator - Sold individually
Part Number: GPD1712062
Guaranteed to Fit
$37.99
Vehicle Fitment
  • 2001 GMC Sierra 1500 C3 8 Cyl 6.0L Bottom; Actuator; Temp Valve
  • 2001 GMC Sierra 1500 SL 8 Cyl 4.8L Bottom; Actuator; Temp Valve
  • 2001 GMC Sierra 1500 SLT 8 Cyl 4.8L Bottom; Actuator; Temp Valve
  • 2001 GMC Sierra 1500 SLT 6 Cyl 4.3L Bottom; Actuator; Temp Valve
  • 2001 GMC Sierra 1500 SLE 8 Cyl 5.3L Bottom; Actuator; Temp Valve
  • 2001 GMC Sierra 1500 SL 8 Cyl 5.3L Bottom; Actuator; Temp Valve
  • 2001 GMC Sierra 1500 SL 6 Cyl 4.3L Bottom; Actuator; Temp Valve
  • 2001 GMC Sierra 1500 SLT 8 Cyl 5.3L Bottom; Actuator; Temp Valve
  • 2001 GMC Sierra 1500 SLE 6 Cyl 4.3L Bottom; Actuator; Temp Valve
  • 2001 GMC Sierra 1500 SLE 8 Cyl 4.8L Bottom; Actuator; Temp Valve
Product Details
Location : LowerProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Quantity Sold : Sold individuallyWarranty : 1 year GPD limited warrantyProduct Fit : Direct Fit
HVAC Heater Blend Door Actuator - Sold individually
Vemo®
HVAC Heater Blend Door Actuator - Sold individually
Part Number: Z8YV57770025
Guaranteed to Fit
$41.49
Vehicle Fitment
  • 2001 GMC Sierra 1500 C3 8 Cyl 6.0L With OE No. 52474810
  • 2001 GMC Sierra 1500 SL 8 Cyl 4.8L With OE No. 52474810
  • 2001 GMC Sierra 1500 SLT 8 Cyl 4.8L With OE No. 52474810
  • 2001 GMC Sierra 1500 SLT 6 Cyl 4.3L With OE No. 52474810
  • 2001 GMC Sierra 1500 SLE 8 Cyl 5.3L With OE No. 52474810
  • 2001 GMC Sierra 1500 SL 8 Cyl 5.3L With OE No. 52474810
  • 2001 GMC Sierra 1500 SL 6 Cyl 4.3L With OE No. 52474810
  • 2001 GMC Sierra 1500 SLT 8 Cyl 5.3L With OE No. 52474810
  • 2001 GMC Sierra 1500 SLE 6 Cyl 4.3L With OE No. 52474810
  • 2001 GMC Sierra 1500 SLE 8 Cyl 4.8L With OE No. 52474810
Product Details
Prop 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Promotions : European Vehicle PartsQuantity Sold : Sold individuallyWarranty : 24-month or 24,000-mile Vemo limited warrantyInterchange Part Number : 52474810Replaces OE Number : 52474810Product Fit : Direct Fit
4-Seasons HVAC Heater Blend Door Actuator HVAC Heater Blend Door Actuator - Sold individually
4-Seasons®
4-Seasons HVAC Heater Blend Door Actuator HVAC Heater Blend Door Actuator - Sold individually
Part Number: FS37539
Guaranteed to Fit
$35.49
Vehicle Fitment
  • 2001 GMC Sierra 1500 All Submodels All Engines
Product Details
Location : Lower MainProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Quantity Sold : Sold individuallySeries : 4-Seasons HVAC Heater Blend Door ActuatorWarranty : 120-day 4-Seasons limited warrantyProduct Fit : Direct Fit
HVAC Heater Blend Door Actuator - Sold individually
Standard®
HVAC Heater Blend Door Actuator - Sold individually
Part Number: SIADR102
Guaranteed to Fit
$48.49
Vehicle Fitment
  • 2001 GMC Sierra 1500 All Submodels All Engines
Product Details
Prop 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Quantity Sold : Sold individuallyWarranty : 3-year or 36,000-mile Standard limited warrantyProduct Fit : Direct Fit
Standard OE Replacement HVAC Heater Blend Door Actuator - Sold individually
Standard®
Standard OE Replacement HVAC Heater Blend Door Actuator - Sold individually
Part Number: SIF04004
Guaranteed to Fit
$51.49
Vehicle Fitment
  • 2001 GMC Sierra 1500 All Submodels All Engines
Product Details
Notes : (1) Female Connector; (3) Male Pin TerminalsProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Quantity Sold : Sold individuallySeries : Standard OE ReplacementWarranty : 3-year or 36,000-mile Standard limited warrantyInterchange Part Number : REPC410209Product Fit : Direct Fit
Standard OE Replacement HVAC Heater Blend Door Actuator - Sold individually
Standard®
Standard OE Replacement HVAC Heater Blend Door Actuator - Sold individually
Part Number: SIF04020
Guaranteed to Fit
$74.99
Vehicle Fitment
  • 2001 GMC Sierra 1500 All Submodels All Engines
Product Details
Notes : HVAC Floor Mode Door Actuator; (1) Female Connector; (8) Male Pin TerminalsProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Quantity Sold : Sold individuallySeries : Standard OE ReplacementWarranty : 3-year or 36,000-mile Standard limited warrantyProduct Fit : Direct Fit
GM Original Equipment Series HVAC Heater Blend Door Actuator - Sold individually
AC Delco®
GM Original Equipment Series HVAC Heater Blend Door Actuator - Sold individually
Part Number: AC1573599
Guaranteed to Fit
$52.99
Vehicle Fitment
  • 2001 GMC Sierra 1500 All Submodels All Engines Air Conditioning Manual Control(C60)
Product Details
Notes : (6) Terminals; Pin Terminal Type; Rectangle Connector Shape; Female Connector Gender; Male Terminal GenderProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Quantity Sold : Sold individuallySeries : GM Original Equipment SeriesWarranty : 24-months or unlimited mile AC Delco limited warrantyReplaces OE Number : 1572506, 89018678Product Fit : Direct Fit
OE Solutions Series HVAC Heater Blend Door Actuator - Sold individually
Dorman®
OE Solutions Series HVAC Heater Blend Door Actuator - Sold individually
Part Number: RB604101
Guaranteed to Fit
$46.99
Vehicle Fitment
  • 2001 GMC Sierra 1500 C3 8 Cyl 6.0L Temperature
  • 2001 GMC Sierra 1500 SL 8 Cyl 4.8L Temperature
  • 2001 GMC Sierra 1500 SLT 8 Cyl 4.8L Temperature
  • 2001 GMC Sierra 1500 SLT 6 Cyl 4.3L Temperature
  • 2001 GMC Sierra 1500 SLE 8 Cyl 5.3L Temperature
  • 2001 GMC Sierra 1500 SL 8 Cyl 5.3L Temperature
  • 2001 GMC Sierra 1500 SL 6 Cyl 4.3L Temperature
  • 2001 GMC Sierra 1500 SLT 8 Cyl 5.3L Temperature
  • 2001 GMC Sierra 1500 SLE 6 Cyl 4.3L Temperature
  • 2001 GMC Sierra 1500 SLE 8 Cyl 4.8L Temperature
Product Details
Location : Main, LowerProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Quantity Sold : Sold individuallySeries : OE Solutions SeriesWarranty : Lifetime Dorman limited warrantyInterchange Part Number : REPC410209, ADA117ááááááááááááááááááá, ADS103, DA1042, 15-72139, 15-72507, 37539, ADS102, F04004, 52474810, GM0613013, ADR102, SK604101á, 604101Replaces OE Number : ADA117ááááááááááááááááááá, ADS103, DA1042, 15-72139, 15-72507, 37539, ADS102, F04004, 52474810, GM0613013, ADR102, SK604101á, 604101Product Fit : Direct Fit
OE Solutions Series HVAC Heater Blend Door Actuator - Sold individually
Dorman®
OE Solutions Series HVAC Heater Blend Door Actuator - Sold individually
Part Number: RB604120
Guaranteed to Fit
$39.49
Vehicle Fitment
  • 2001 GMC Sierra 1500 C3 8 Cyl 6.0L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SLE 8 Cyl 5.3L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SL 6 Cyl 4.3L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SLE 8 Cyl 4.8L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SLT 6 Cyl 4.3L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SL 8 Cyl 4.8L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SLT 8 Cyl 4.8L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SL 8 Cyl 5.3L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SLT 8 Cyl 5.3L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
  • 2001 GMC Sierra 1500 SLE 6 Cyl 4.3L Air Inlet; With Rpo Code C60 Front Manual Temperature Controls)
Product Details
Location : MainNotes : 3-Pin ConnectorsProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Quantity Sold : Sold individuallySeries : OE Solutions SeriesWarranty : Lifetime Dorman limited warrantyInterchange Part Number : REPC410211, ADS113, 73013, DA1059, 15-72506, 15-73599, F04015, 52474795, 89018373, 89018678, ADR113, SK604120Replaces OE Number : ADS113, 73013, DA1059, 15-72506, 15-73599, F04015, 52474795, 89018373, 89018678, ADR113, SK604120Product Fit : Direct Fit
GM Original Equipment Series HVAC Heater Blend Door Actuator - Sold individually
AC Delco®
GM Original Equipment Series HVAC Heater Blend Door Actuator - Sold individually
Part Number: AC1572507
Guaranteed to Fit
$76.99
Vehicle Fitment
  • 2001 GMC Sierra 1500 All Submodels All Engines Bottom
Product Details
Prop 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Quantity Sold : Sold individuallySeries : GM Original Equipment SeriesWarranty : 24-months or unlimited mile AC Delco limited warrantyReplaces OE Number : 52474810Product Fit : Direct Fit
Page 1 of 2 | Showing 1 - 15 of 19 results

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Popular Products

Product Questions & Answers

AC Delco GM Original Equipment Series HVAC Heater Blend Door Actuator - Sold individually
$76.99
Q:is this part the 5 pin?
OLIVER P.
A:BEST ANSWERHi Oliver, I'm glad to assist you. Yes. It is with a 5-pin terminal socket connector. It is a guaranteed fit part if your truck appears in the vehicle fitment information below (after selecting the year, make, model, submodel, and engine size). Grab our sale offer and click the link below to buy it today. Happy shopping! https://www.carparts.com/hvac-heater-blend-door-actuator/ac-delco/ac1572507?can=cpje1043_CSQA_20240812 Show less
Jeonino E.
 
1 Question, 1 AnswerView all Q&As >
Dorman OE Solutions Series HVAC Heater Blend Door Actuator - Sold individually
$39.49
Q:Will this stop the passenger side from blowing hot air out when it's supposed to be cold? Show Less
Danny H.
A:BEST ANSWERHi Danny, I'm glad to assist you. Yes. The blend door actuator flap regulates the flow of air between the heater core and the a/c evaporator, allowing the system to deliver either warm or cold air into the cabin. Grab our sale price and click the link below to buy it today. Happy shopping! https://www.carparts.com/hvac-heater-blend-door-actuator/dorman/rb604120?can=cpje1043_CSQA_20230723 Show less
Jeonino E.
 
1 Question, 1 AnswerView all Q&As >
Dorman OE Solutions Series HVAC Heater Blend Door Actuator - Sold individually
$46.99
Q:I have a 2002 Chevy Silverado 1500, it’s making a click, click noise.My mechanic told me it’s these part . Controls the door for the air to pass, top bottom and middle.My question is does it have on one part or it’s more than one? Show Less
Rafael C.
A:BEST ANSWERHi Rafael, This heater blend door actuator is guaranteed to fit the 2002 Chevrolet Silverado 1500 All Submodels All Engines. The mechanic was right to have suggested replacing this part and described the function of the part correctly. As to your question, if there is anything else needed, that depends on the condition of the other related parts on the vehicle. Show less
Grace G.
 
1 Question, 1 AnswerView all Q&As >

Helpful Automotive Resources

Heating System Parts
Heating System Parts Pro Tip: The heater core can clog internally with rust or externally with dust and leaves.
Bad Blend Door Actuator: Symptoms, Location, & Replacement FAQ
Bad Blend Door Actuator: Symptoms, Location, & Replacement FAQA typical air management system has three primary types of doors: an inlet door, a mode door, and one or more blend doors. The inlet door determines whether fresh air or recirculated air travels through the system. Meanwhile, the mode door controls the air discharge location (i.e., panel or floor).