CHEVROLET 655-01046 Temperature Climate Control Unit S15

( Part Type: Control Unit ), ( Mounting Style: Screw-on ), ( Years: 1982 1983 1984 1985 82 83 84 85 ), ( Color: Black ), ( Material: Plastic ), ( Vintage Part: Yes ), ( Ipn: 655-01046 ), ( Drive Side: Left-hand Drive ), ( Manufacturer Warranty: 1 Month ), ( Features: No Drilling Or Modifications Needed For Installation ), ( Universal Fitment: No )

Review CHEVROLET S15 Pickup Temperature Climate Control Unit Oem fits BLAZER S10 1982–1985

The **Chevrolet 655-01046 Temperature Climate Control Unit**, produced for the **1982 through 1985 Chevrolet Blazer and S-10/S-15 models**, represents a critical yet often overlooked component of these iconic mid-sized trucks and compact SUVs. This robust, vacuum-actuated climate control module was engineered to regulate cabin temperature and airflow with precision, ensuring passenger comfort in a wide range of driving conditions from the scorching heat of a desert highway to the biting chill of a winter morning. Designed with a durable, black plastic housing, the unit houses a sophisticated network of dials, switches, and vacuum lines that work in tandem with the vehicle s engine-driven vacuum pump to adjust the blower motor speed, air distribution (floor, defrost, or face vents), and temperature mixing via the heater core. The front panel features a classic, utilitarian layout, with a **temperature dial** (ranging from cold to hot) positioned centrally, flanked by **air distribution levers** for controlling airflow direction and a **fan speed control** knob that adjusts the blower motor s output through varying vacuum pressures. Beneath the dashboard, the unit connects to the vehicle s HVAC system via a series of vacuum hoses, which channel engine vacuum to operate the internal diaphragm actuators, while electrical wiring powers the blower motor and temperature sensors. Built to withstand the demands of rugged off-road use and daily commuting alike, this climate control unit exemplifies the functional yet slightly dated engineering of its era, offering a blend of simplicity and effectiveness that was characteristic of Chevrolet s approach to vehicle comfort in the early 1980s. Whether restoring a classic S-10 for weekend adventures or maintaining a well-loved Blazer as a daily driver, this **655-01046 unit** serves as a foundational element in ensuring that the cabin remains a haven of controlled climate, blending reliability with the nostalgic charm of a bygone automotive era.

### **Pros and Cons of Buying a Chevrolet 655-01046 (1982-1985 Blazer/S10/S15) Temperature/Climate Control Unit**

1. **Common and Widely Available** This unit is a standard component for late '80s Chevrolet trucks and SUVs, meaning parts and labor are easy to find. Aftermarket and OEM replacements are readily accessible, reducing long wait times for repairs.

2. **Repairable and Upgradable** Unlike modern electronic climate control systems, this mechanical/hydraulic unit can often be repaired rather than replaced. Common issues like failing relays, worn seals, or vacuum leaks can be fixed with basic mechanical knowledge or a skilled technician.

3. **Lower Cost of Replacement** Since it s an older model, a new or refurbished unit is significantly cheaper than modern climate control systems. Prices typically range from **$100 $300** for a used/refurbished unit, compared to **$500 $1,500 ** for newer systems.

4. **Simpler Troubleshooting** The system relies on vacuum or basic electrical components rather than complex computer modules. This makes diagnosing issues (e.g., no heat, weak airflow) more straightforward with a multimeter or vacuum gauge.

5. **Compatibility with Modifications** If you plan to modify your truck (e.g., aftermarket stereo, lighting, or performance upgrades), this climate control unit won t interfere with those changes as much as a modern system might.

6. **Potential for DIY Replacement** With basic tools and patience, an experienced DIYer can swap out the unit themselves, saving on labor costs (typically **$150 $300** at a shop).

7. **Durability (If Well-Maintained)** Many of these units last decades if the vacuum hoses, seals, and electrical connections are kept in good condition. Rust and corrosion are the main enemies, but they re manageable with proper care.

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1. **Reliability Issues Over Time** The unit itself may fail due to **aging seals, vacuum leaks, or electrical component wear**. The **blower motor resistor** and **temperature control actuator** are common failure points. Expect to replace these parts eventually.

2. **Vacuum System Dependence** The climate control relies on a **vacuum pump** (often driven by the engine) to operate the temperature and fan controls. If the vacuum pump fails or hoses crack, the entire system can malfunction. Replacing the vacuum pump adds to maintenance costs.

3. **Limited Climate Control Features** Unlike modern systems, this unit offers **basic temperature and fan speed control only**. There s no **defrost/defog**, **air recirculation**, or **multi-zone** functionality. Heating performance may also be weaker compared to newer systems.

4. **Potential for Rust and Corrosion** If the truck has been exposed to moisture (e.g., off-roading, snow, or poor storage), the unit may suffer from **internal rust**, especially in the **temperature actuator** or **housing**. This can lead to sticky controls or complete failure.

5. **No Electronic Diagnostics** Unlike modern systems with error codes, troubleshooting requires **manual testing** (checking fuses, vacuum lines, and electrical connections). This can be time-consuming for those unfamiliar with older systems.

6. **Aftermarket Parts May Not Fit Perfectly** While many aftermarket replacements exist, some may not align perfectly with the original unit, leading to **leaks, improper sealing, or electrical issues**. Always verify compatibility before purchasing.

7. **Labor Intensity for Replacement** While the unit itself is relatively simple to remove, **reconnecting vacuum lines, wiring, and hoses** can be fiddly. If the truck has been modified (e.g., lifted, aftermarket steering wheel), routing wires may require extra effort.

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The **Chevrolet 655-01046 temperature/climate control unit** is a **practical and cost-effective solution** for restoring basic climate control to a **1982 1985 Blazer, S10, or S15**. It s **easy to find, repair, and replace**, making it ideal for **budget-conscious owners** who prioritize functionality over modern conveniences.

However, it s not a **long-term bulletproof solution** expect to **replace worn components** (resistor, actuator, vacuum pump) over time. If your truck sees **heavy use, off-roading, or extreme weather**, plan for **additional maintenance** to prevent rust and vacuum leaks.

For those who want **full modern climate control**, upgrading to a **new or remanufactured unit** (or even a **used unit from a newer truck**) may be worth the higher cost. But for **basic heating and cooling**, this unit is a **solid, affordable choice**.

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- You need **basic climate control** and can accept **limited features**.

- You re on a **tight budget** and want a **quick, cheap fix**.

- You re comfortable with **basic mechanical/electrical troubleshooting**.

- You plan to **replace the unit eventually** (as a temporary solution).

- You want **modern climate control features** (defrost, recirculation, multi-zone).

- Your truck is **heavily modified** (lifted, aftermarket steering wheel), making installation difficult.

- You **hate dealing with vacuum systems** and prefer plug-and-play solutions.

- You want **long-term reliability** without future repairs.

- **Test the unit before buying** (if possible) to ensure it s **functional and not rusted internally**.

- **Keep spare parts** (blower motor resistor, temperature actuator, vacuum pump) on hand.

- **Consider a used/refurbished unit** from a **trusted source** (eBay, junkyard, or a mechanic you trust).

- **Budget for future maintenance** this isn t a "set it and forget it" component.

If you re **not intimidated by basic repairs**, this is a **great budget-friendly option**. If you want **full modern functionality**, research **aftermarket upgrades** or **remanufactured units** for a smoother experience.

Details:

specifications chvyacheatercontrols:

• for models: S10, Blazer
• for makes: Chevrolet
• for years: 1982-1985
• part type: Control Unit
• mounting style: Screw-on
• years: 1982 1983 1984 1985 82 83 84 85
• color: Black
• material: Plastic
• vintage part: Yes
• ipn: 655-01046
• drive side: Left-hand Drive
• manufacturer warranty: 1 Month
• features: No Drilling Or Modifications Needed For Installation
• universal fitment: No

shipping chvyacheatercontrols:

• type: Fixed
• carrier: FedEx
• class: Standard
• service: FedEx Ground / FedEx Home Delivery
• cost: $0.00
• transit: 3-7 Days

offer chvyacheatercontrols:

• quantity: 1
• started: April 27, 2026
• options: Ship-to-home
• sold: 0
• availability: In Stock

returns chvyacheatercontrols:

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

general chvyacheatercontrols:

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

payments chvyacheatercontrols:

• credit card: Discover
• other
• wallet: Google-pay

seller chvyacheatercontrols:

• city: Albany, Oregon
• rating: 99.8%
• # reviews: 3581

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