FOUR SEASONS 37640 Hvac Blower Control Switch 096361143579

( Brand: Four Seasons ), ( Manufacturer Part Number: 37640 ), ( Part Type: Hvac Control Switch Blower ), ( Product Type: A/c Heating ), ( UPC: 096361143579 ), ( Fitment Type: Vehicle Specific ), ( Compatible Make S : Chevrolet, Gmc ), ( Compatible Model S : Astro, Express 1500, Express 2500, Express 3500, G30, Safari ), ( Fitnote: W/o Rear A/c. Will Not Fit Cargo Van Models., W/o Rear A/c ), ( Product Subtype: A/c Relays, Sensors Switches ), ( Product Details: Hvac Blower Control Switch ), ( Department: Replacement )

Review FOUR SEASONS Chevy Hvac Blower Control Switch fits ASTRO 1996–2004

The **Seasons 37640 HVAC Blower Control Switch** is a high-quality, direct-fit replacement part designed specifically for Chevrolet Astro vans and GMC Savana models manufactured between **1996 and 2004**. This durable, precision-engineered component replaces the original factory blower control switch, ensuring reliable operation of the vehicle s climate control system. Crafted from robust, corrosion-resistant materials, this switch is built to withstand the demands of daily use, providing smooth and consistent blower motor control across all speed settings from low to high while maintaining a secure, interference-free connection. The switch features a **metal housing** for added durability and a **tactile, ergonomic lever** that offers a satisfying, responsive feel, reducing the risk of accidental misadjustments. Compatible with the vehicle s existing wiring harness, this aftermarket part eliminates the need for complex modifications, making installation straightforward for both DIY enthusiasts and professional mechanics. Whether replacing a worn-out original component or upgrading for improved performance, the **Seasons 37640** ensures seamless integration with the Astro s HVAC system, delivering consistent airflow and enhancing overall comfort. Built to meet or exceed OEM standards, this switch is an excellent choice for restoring functionality to aging climate control systems, ensuring long-term reliability and peace of mind.

Buying the **Seasons 37640 HVAC Blower Control Switch** for a **1996-2004 Chevrolet Astro** has both advantages and disadvantages. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.

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### **Pros of buying a Seasons 37640 Switch**

1. **Direct Fitment and Compatibility**

The Seasons 37640 is specifically designed as an **OEM replacement** for the Chevrolet Astro s HVAC blower control switch, ensuring a seamless fit without modifications. This reduces the risk of installation issues that can arise with aftermarket parts that may not align perfectly.

2. **Reliability and Durability**

Seasons is a reputable brand known for producing **high-quality automotive electrical components**. The switch is built to withstand frequent use, reducing the likelihood of premature failure compared to cheaper, no-name alternatives. Many users report long-term reliability, especially if the vehicle s wiring remains intact.

3. **Easy Installation**

The switch is designed for straightforward replacement, requiring minimal tools (typically just a screwdriver). The wiring harness is pre-connected, which simplifies the process for DIYers. Instructions are usually clear, and the part is often sold with mounting hardware.

4. **Cost-Effective Compared to OEM**

While not an exact OEM part, the Seasons switch is **significantly cheaper** than purchasing a genuine GM replacement. For most owners, this represents a **good balance between affordability and quality**, avoiding the higher cost of dealer-sourced parts.

5. **Wider Availability**

The Seasons 37640 is widely stocked by **auto parts retailers** (both online and in-store), making it easier to purchase than rare OEM parts. This ensures quicker access, especially for those who need the part urgently.

6. **Positive User Feedback**

Many reviews from Chevrolet Astro owners highlight that this switch **eliminates common issues** like intermittent blower operation, dead switches, or resistance when adjusting settings. Users appreciate that it restores smooth functionality without additional modifications.

7. **Compatibility with Aftermarket Upgrades**

If the vehicle has been modified (e.g., with a **blower motor resistor upgrade** or **remote control switches**), the Seasons switch often integrates well, provided the wiring is correctly routed. This makes it a versatile choice for both stock and slightly modified vehicles.

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### **Cons of buying a Seasons 37640 Switch**

1. **Potential Quality Variations**

While Seasons is generally reliable, **counterfeit or lower-quality knockoffs** can sometimes slip into the market, especially on third-party platforms. Buying from **authorized dealers or reputable sellers** (e.g., RockAuto, Amazon, or local auto parts stores with return policies) helps mitigate this risk.

2. **Limited Customization**

The switch is a **standard replacement** and does not offer additional features like **remote control compatibility** or **variable speed adjustments** beyond the original design. If the owner seeks upgrades (e.g., a **multi-speed switch with LED indicators**), this part may not suffice.

3. **Wiring Concerns in Older Vehicles**

If the vehicle s **wiring harness or connectors** are degraded (common in older Astros), the new switch may not function properly due to **corrosion, loose connections, or damaged wires**. In such cases, additional repairs (e.g., cleaning terminals, replacing wiring) may be necessary.

4. **Mismatched Styling (Aesthetic)**

The Seasons switch is a **functional replacement** and may not match the **original trim or finish** of the Astro s dashboard. While this is rarely a performance issue, some owners prefer the look of an OEM part for cosmetic consistency.

5. **No Warranty on Some Retailers**

While Seasons parts often come with a **limited warranty**, some online sellers (especially marketplaces) may not honor it. Buyers should **check the seller s return policy** before purchasing to ensure coverage in case of defects.

6. **Possible Compatibility with Non-Standard Installs**

If the vehicle has had **aftermarket modifications** (e.g., a **custom dash layout** or **blower motor swap**), the switch may not align perfectly. In rare cases, minor adjustments (e.g., trimming wires) may be required, though this is uncommon for this specific part.

7. **Delivery and Stock Issues**

Like many automotive parts, the **Seasons 37640 may experience stock shortages** depending on demand. Buyers should **verify availability** before ordering to avoid delays, especially if the part is needed urgently.

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### **Conclusion**

The **Seasons 37640 HVAC Blower Control Switch** is a **strong, cost-effective choice** for replacing a faulty or worn-out switch in a **1996-2004 Chevrolet Astro**. Its **direct fitment, reliability, and ease of installation** make it a practical solution for most owners. However, buyers should **prioritize purchasing from trusted sellers** to avoid counterfeit parts and **inspect the wiring** before installation to ensure long-term functionality.

For owners who need a **quick, budget-friendly fix** without sacrificing quality, this switch is highly recommended. Those seeking **customization or high-end upgrades** may need to explore additional aftermarket options, but for standard replacement needs, the Seasons part delivers **excellent value**.

### **Final Recommendation**

- You need a **direct OEM-style replacement** for a non-functioning blower switch.

- You want a **reliable, mid-range priced part** that avoids the cost of OEM replacements.

- Your vehicle s wiring is in **good condition** (or you re willing to address any issues separately).

- You prefer **easy installation** with minimal modifications.

- You suspect **counterfeit parts** (stick to verified sellers).

- Your vehicle has **significant wiring damage** that needs addressing first.

- You want **custom features** (e.g., remote control, LED indicators).

- **RockAuto** (reliable, often with warranty)

- **Amazon** (check seller ratings)

- **Local auto parts stores** (e.g., AutoZone, O Reilly, NAPA)

- **eBay (verified sellers only)**

By following these guidelines, you can confidently select the Seasons 37640 as a **solid replacement** for your Chevrolet Astro s HVAC blower control switch.

Details:

Switch-Selector /Blower. Backed by over 50 years of mobile A/C experience, fix it once and right with Four Seasons. HVAC Blower Control Switch 37640 by Four Seasons. Features: Premium parts you can rely on.

Specifications: Connector Gender: Male. Connector Shape: Round. Being a dominant leader in highly efficient climate control products and superior remanufactured compressors, Four Seasons also provides wide array of replacement engine, transmission, steering electrical parts. Type: Blower.

Unmatched quality and exceptional dependability are hammered into every Four Seasons product. Four Seasons also makes tough and reliable automotive tools you can count on for to get your job done right. Number of Terminals: designed to keep your A/C system in top shape.

The finest quality at a great price.

part #: 37640 prices

• $66.97-$102.99

specifications chvyacheatercontrols:

• for models: Astro
• for makes: Chevy
• for years: 1996-2004
• brand: Four Seasons
• mpn: 37640
• part type: Hvac Control Switch Blower
• product type: A/c Heating
• upc: 096361143579
• fitment type: Vehicle Specific
• compatible make s : Chevrolet, Gmc
• compatible model s : Astro, Express 1500, Express 2500, Express 3500, G30, Safari
• fitnote: W/o Rear A/c. Will Not Fit Cargo Van Models., W/o Rear A/c
• product subtype: A/c Relays, Sensors Switches
• product details: Hvac Blower Control Switch
• department: Replacement

offer chvyacheatercontrols:

• sold: 0
• quantity: 5
• started: April 25, 2026
• availability: In Stock
• options: Ship-to-home

general chvyacheatercontrols:

• Car Truck Parts Accessories > Air Conditioning Heating > HVAC Controls Control Units
• condition: Used

returns chvyacheatercontrols:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

seller chvyacheatercontrols:

• city: Rockville Centre, New York
• rating: 99.1%
• # reviews: 156403

payments chvyacheatercontrols:

• wallet: Paypal
• credit card: Discover
• other

shipping chvyacheatercontrols:

• service: FedEx Ground / FedEx Home Delivery
• carrier: FedEx
• type: Calculated
• class: Standard
• cost: $20.77
• transit: 4-7 Days

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