HomeHVAC > Motors, Core, Case and Related ComponentsFour Seasons 20077 HVAC Blower Motor Resistor - Front
Part #: 20077

Four Seasons 20077 HVAC Blower Motor Resistor - Front

Resistor Block, Front
⚙️ 54 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Resistor Block, Front
🚗Fitment: Buick, Chevrolet, Pontiac, and Oldsmobile, Century, LaCrosse, Regal, Impala, Monte Carlo, Grand Prix, Corvette, Intrigue, Venture, Silhouette, Montana, and Trans Sport
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Overview of Four Seasons Resistor Block 20077

The Four Seasons Resistor Block 20077 is a critical HVAC blower motor resistor designed for select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. This resistor block ensures proper blower motor speed control, maintaining consistent climate control performance in your vehicle.

  • Connector Gender: Female
  • Connector Shape: Rectangular
  • Number of Terminals: 9
  • Terminal Type: Pin/wire lead
  • Speed Setting: Fixed #4
  • Meets or exceeds OEM specifications

About the Four Seasons Resistor Block Product Line

The Four Seasons Resistor Block product line focuses on providing reliable HVAC blower motor resistors that meet or exceed original equipment manufacturer standards. The 20077 resistor block is engineered to deliver consistent electrical resistance and durability, ensuring proper blower motor speed regulation for compatible vehicles.

Detailed Product Description

This HVAC blower motor resistor from Four Seasons features a female rectangular connector with nine terminals, designed for secure and precise electrical connections. The fixed speed #4 setting allows for stable blower motor operation, contributing to effective climate control in vehicles such as the Buick Century, Chevrolet Impala, and Pontiac Grand Prix. The pin/wire lead terminal type supports straightforward installation and reliable conductivity.

Compatible Vehicles and Common Applications

This resistor block is compatible with a range of Buick, Chevrolet, Oldsmobile, and Pontiac models, including Century, Corvette, Grand Prix, Impala, Intrigue, LaCrosse, Montana, Monte Carlo, Regal, Riviera, Silhouette, and Trans Sport. It is commonly used to address HVAC blower motor issues such as:

  • Inconsistent blower motor speeds
  • Blower motor only working on certain speed settings
  • Complete loss of blower motor function
  • Intermittent HVAC fan operation
  • Electrical resistance failure within the blower motor circuit

Installation Notes and Tips

When installing the Four Seasons Resistor Block 20077, ensure the vehicle’s HVAC system is powered off to avoid electrical hazards. Verify the connector orientation matches the female rectangular shape and that all nine terminals align correctly. Properly secure the resistor block to prevent vibration damage and confirm all wire leads are firmly connected to maintain optimal electrical contact.

Quality Assurance and Warranty

The Four Seasons Resistor Block 20077 meets or exceeds OEM specifications, providing dependable performance and durability. This part is manufactured to rigorous quality standards to ensure long-lasting operation in your Buick, Chevrolet, Oldsmobile, or Pontiac vehicle. Warranty coverage details should be confirmed with the product documentation or manufacturer.

BrandFour Seasons
Part Number20077
PositionResistor Block, Front
Connector GenderFemale
Connector ShapeRectangular
DescriptionResistor Block
Meets / Exceeds OEM?Yes
Number of Terminals9
SpeedFixed # 4
Terminal TypePin/ Wire Lead
TypeSwitches

This part fits 54 vehicles. Search below:

YearMakeModelBody TypeLitersCylindersPositionNotes
2005BuickCenturySedan3.1LV6N/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2005BuickLaCrosseN/A7 Blade Term.; Resistor Block
2004BuickCenturySedan3.1LV6N/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2004BuickRegalSedan3.8LV6N/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2003BuickCenturySedan3.1LV6N/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2003BuickRegalSedan3.8LV6N/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2003ChevroletImpalaN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2003ChevroletMonte CarloN/AFits HVAC blower control switch with manual control.; Resistor Block
2003PontiacGrand PrixN/AResistor Block
2002BuickCenturySedan3.1LV6N/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2002BuickRegalSedan3.8LV6N/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2002ChevroletCorvetteN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2002ChevroletImpalaN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2002ChevroletMonte CarloN/AFits HVAC blower control switch with manual control.; Resistor Block
2002OldsmobileIntrigueN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2002PontiacGrand PrixN/AResistor Block
2001BuickCenturySedan3.1LV6N/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2001BuickRegalSedan3.8LV6N/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2001ChevroletCorvetteN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2001ChevroletImpalaN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2001ChevroletMonte CarloN/AFits HVAC blower control switch with manual control.; Resistor Block
2001OldsmobileIntrigueN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2001PontiacGrand PrixN/AResistor Block
2000BuickCenturySedan3.1LV6N/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2000BuickRegalSedan3.8LV6N/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2000ChevroletCorvetteN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2000ChevroletImpalaN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2000ChevroletMonte CarloN/AFits HVAC blower control switch with manual control.; Resistor Block
2000OldsmobileIntrigueN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2000OldsmobileSilhouetteN/AResistor Block
2000PontiacGrand PrixN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
2000PontiacMontanaN/AResistor Block
1999BuickCenturySedan3.1LV6N/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
1999BuickRegalSedan3.8LV6N/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
1999BuickRivieraN/Aw/o ATC (Automatic Temperature Control); Motor Resistor
1999ChevroletCorvetteN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
1999OldsmobileIntrigueN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
1999OldsmobileSilhouetteN/AResistor Block
1999PontiacGrand PrixN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
1999PontiacMontanaN/AResistor Block
1999PontiacTrans SportN/AResistor Block
1998BuickCenturySedan3.1LV6N/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
1998BuickRegalSedan3.8LV6N/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
1998ChevroletCorvetteN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
1998OldsmobileIntrigueN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
1998OldsmobileSilhouetteN/AResistor Block
1998PontiacGrand PrixN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
1998PontiacTrans SportN/AResistor Block
1997BuickCenturySedan3.1LV6N/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
1997BuickRegalSedan3.8LV6N/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
1997ChevroletCorvetteN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
1997OldsmobileSilhouetteN/AResistor Block
1997PontiacGrand PrixN/AATC relay connector incompatible with HVAC blower motor resistor harness.; Resistor Block
1997PontiacTrans SportN/AResistor Block

* 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:

1112007712135102153048911539382915805711711730200775248170789018437890185018901864389019101973000973408A07886ACD1580571DR783MT18051MT1819SW9956SW9956C

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