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Four Seasons 20338 HVAC Blower Motor Resistor - Front
Overview of Four Seasons Resistor Block 20338
The Four Seasons Resistor Block 20338 is designed specifically for HVAC blower motor systems in Chevrolet Astro and GMC Safari vehicles. This HVAC blower motor resistor ensures proper fan speed control and reliable operation within your vehicle's heating and cooling system.
- Connector Gender: Male
- Connector Shape: Other design
- Number of Terminals: 4
- Terminal Type: Spade
- Speed: Fixed #3
- Meets or exceeds OEM specifications
About the Four Seasons Resistor Block Product Line
The Four Seasons Resistor Block product line focuses on providing durable and precise HVAC blower motor resistors that maintain consistent fan speed control. The Resistor Block 20338 is part of this line, engineered to meet or exceed original equipment manufacturer standards, ensuring compatibility and performance for Chevrolet Astro and GMC Safari models.
Detailed Product Description
This HVAC blower motor resistor features a male connector with a unique design to fit specific blower motor assemblies. It includes four spade terminals that provide secure electrical connections and a fixed speed setting (#3) to regulate blower motor operation effectively. The resistor block is a critical component in controlling the fan speeds of your vehicle’s HVAC system, helping maintain comfortable cabin temperatures.
Common Applications and Issues Addressed
- Restores proper blower motor fan speed control in Chevrolet Astro and GMC Safari
- Resolves blower motor fan stuck on one speed
- Fixes intermittent or non-functioning blower motor speeds
- Eliminates overheating issues related to faulty resistor blocks
- Prevents blower motor resistor failure that can affect HVAC performance
Installation Notes and Tips
- Ensure vehicle ignition is off before installation
- Disconnect the battery to avoid electrical shorts
- Locate the blower motor resistor in the HVAC housing under the dashboard
- Remove the old resistor block carefully, noting terminal connections
- Install the Four Seasons Resistor Block 20338 by connecting the male spade terminals securely
- Test blower motor speeds after installation to confirm proper function
Quality Assurance and Warranty
The Four Seasons Resistor Block 20338 meets or exceeds OEM specifications, providing reliable performance for Chevrolet Astro and GMC Safari HVAC systems. This part is manufactured to strict quality standards to ensure durability and consistent operation. Please refer to Four Seasons’ warranty policy for specific coverage details.
| Brand | Four Seasons |
| Part Number | 20338 |
| Position | Resistor Block, Front |
| Connector Gender | Male |
| Connector Shape | Other design |
| Description | Resistor Block |
| Meets / Exceeds OEM? | Yes |
| Number of Terminals | 4 |
| Speed | Fixed # 3 |
| Terminal Type | Spade |
| Type | Switches |
This part fits 12 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1991 | Chevrolet | Astro | Front | Compatible with vehicles equipped with air conditioning.; Resistor Block |
| 1991 | GMC | Safari | Front | Compatible with vehicles equipped with air conditioning.; Resistor Block |
| 1990 | Chevrolet | Astro | Front | Compatible with vehicles equipped with air conditioning.; Resistor Block |
| 1990 | GMC | Safari | Front | Compatible with vehicles equipped with air conditioning.; Resistor Block |
| 1989 | Chevrolet | Astro | Front | Compatible with vehicles equipped with air conditioning.; Resistor Block |
| 1989 | GMC | Safari | Front | Compatible with vehicles equipped with air conditioning.; Resistor Block |
| 1988 | Chevrolet | Astro | Front | Compatible with vehicles equipped with air conditioning.; Resistor Block |
| 1988 | GMC | Safari | Front | Compatible with vehicles equipped with air conditioning.; Resistor Block |
| 1987 | Chevrolet | Astro | Front | Compatible with vehicles equipped with air conditioning.; Resistor Block |
| 1987 | GMC | Safari | Front | Compatible with vehicles equipped with air conditioning.; Resistor Block |
| 1986 | Chevrolet | Astro | Front | Compatible with vehicles equipped with air conditioning.; Resistor Block |
| 1986 | GMC | Safari | Front | Compatible with vehicles equipped with air conditioning.; Resistor 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.