fits model: C10, Suburban. make: Chevy. year: 1973–1986.

( Brand: Standard Motor Products ), ( Manufacturer Part Number: 31QQWGJK ), ( Part Type: Blower Resistor Motor ), ( Compatible Make/model: Chevrolet C10 Suburban ), ( Compatible Years: 1975 1981 1973 1974 1976 1977 1978 1979 1980 1982 1983 1984 1985 ), ( Fitment Info: Hvac Blower Motor Resistor ), ( Manufacturer Warranty: 12 Month Warranty ), ( Attention: Read Full Description To Confirm Fitment ), ( Cs-sku: 400 )
The **Standard Motor 31QQWGJK Blower Resistor** is a high-quality, precision-engineered component designed specifically for Chevrolet C10 and Suburban models produced between 1973 and 1986, ensuring reliable and efficient operation of the vehicle s heating and air conditioning (HVAC) blower motor system. This resistor is meticulously crafted to regulate the airflow speed of the blower motor by gradually increasing or decreasing electrical resistance, allowing drivers to adjust the fan settings from low to high with smooth, consistent performance. Built to withstand the demands of daily use, this resistor is constructed from durable, heat-resistant materials that prevent overheating and ensure long-term reliability, even under prolonged operation. Its compact yet robust design fits seamlessly into the vehicle s electrical system, maintaining compatibility with the original wiring and connections without requiring modifications. Whether used for routine maintenance, replacement after failure, or as a preventive upgrade, this resistor guarantees optimal airflow control, enhancing passenger comfort while minimizing strain on the blower motor. Ideal for both professional mechanics and DIY enthusiasts, the Standard Motor 31QQWGJK Blower Resistor delivers dependable performance, helping to keep your classic or vintage Chevrolet vehicle s climate control system running smoothly for years to come.
**Pros and Cons of Buying a Standard Motor 31QQWGJK Blower Resistor for a 1973-1986 Chevy C10 Suburban**
### **Pros:**The Standard Motor 31QQWGJK blower resistor is a well-known, high-quality replacement part for your vehicle s heating and air conditioning system. Here are the key advantages:
1. **Reliability and Durability** Standard Motor parts are designed to meet or exceed OEM specifications, ensuring long-term performance without frequent failures. The resistor is built to handle consistent use without overheating or degrading quickly.
2. **Direct Fitment** This part is specifically engineered for the 1973 1986 Chevy C10 Suburban, meaning it will install without modifications. The part number (31QQWGJK) confirms compatibility with the resistor s mounting and electrical connections.
3. **Consistent Fan Speed Control** A functioning blower resistor ensures smooth, incremental adjustments to the fan speed, preventing sudden jumps or complete failure of the blower motor. This improves comfort and prevents strain on the motor.
4. **Ease of Installation** The resistor is a straightforward component to replace, typically requiring only basic tools (screwdriver, wire connectors). No wiring harness or complex disassembly is needed, making it a DIY-friendly repair.
5. **Prevents Electrical Issues** A failing resistor can cause intermittent fan operation or complete blower failure. Replacing it early avoids more serious problems, such as a burnt-out motor or fuse blowing due to excessive current draw.
6. **Cost-Effective Repair** Compared to replacing the entire blower motor or HVAC assembly, the resistor is a low-cost fix (typically under $20 $40, depending on source). This makes it a practical solution for budget-conscious owners.
7. **Widely Available** As an aftermarket part, it is stocked by many auto parts retailers (AutoZone, RockAuto, Amazon, etc.), ensuring easy availability even for older vehicle models.
---
### **Cons:** While the Standard Motor resistor is a solid choice, there are a few potential drawbacks to consider:1. **Mixed Quality in Aftermarket Parts** Though Standard Motor is reputable, some aftermarket resistors may vary in quality. Cheaper knockoff brands might fail prematurely or lack proper heat dissipation, leading to early burnout. Always verify the seller s reputation.
2. **Potential for Counterfeit Parts** Online marketplaces occasionally list fake or mislabeled parts. Ensure the product matches the exact part number (31QQWGJK) and comes from a trusted source to avoid receiving a non-functional or incorrect resistor.
3. **Limited Lifespan** Like all electrical components, resistors degrade over time due to heat and electrical stress. While Standard Motor parts are durable, they are not indestructible and may eventually fail, especially if the vehicle is driven frequently in extreme climates.
4. **Requires Basic Electrical Knowledge** While installation is simple, miswiring or improper handling can damage the resistor or other components. Those unfamiliar with electrical work may need to consult a manual or seek professional help.
5. **No Warranty on Some Retailers** Some online sellers offer no return or warranty policies. Purchasing from a retailer with a return window (e.g., Amazon, RockAuto) mitigates this risk but isn t guaranteed.
6. **Compatibility with Modified Systems** If your vehicle has aftermarket modifications (e.g., upgraded blower motors, custom wiring), the resistor may not integrate perfectly. Always check compatibility with any additional components.
7. **Environmental Factors** Exposure to moisture, dust, or extreme temperatures can accelerate wear. Ensuring the resistor is properly sealed and the vehicle s HVAC system is maintained will extend its life.
---
### **Conclusion:**The **Standard Motor 31QQWGJK blower resistor** is an excellent choice for restoring proper fan speed control in your 1973 1986 Chevy C10 Suburban. Its reliability, direct fitment, and ease of installation make it a practical and cost-effective solution for a common but critical HVAC issue. The part s widespread availability and reputation for durability outweigh the minor risks, provided you source it from a trusted supplier.
However, the potential for counterfeit parts or quality variations in aftermarket components underscores the importance of verifying the seller and part authenticity. If you re comfortable with basic repairs, replacing the resistor yourself is a straightforward and rewarding project. For those less experienced, consulting a mechanic or auto electrician ensures proper installation and avoids common pitfalls.
**Final Recommendation:**Purchase the **Standard Motor 31QQWGJK blower resistor** from a reputable retailer such as **RockAuto, AutoZone, or Amazon** to ensure authenticity and quality. If possible, compare it with the original part for a visual inspection before installation. Replace it promptly if symptoms of failure (e.g., single fan speed, intermittent operation) arise, as this prevents further damage to the blower motor or wiring. For long-term reliability, consider pairing this repair with regular HVAC system maintenance, such as cleaning the blower motor and inspecting connections. This will maximize the lifespan of both the resistor and the entire system.
Harness length - cm: No wire. Notes: HVAC Blower Motor Resistor. Restores A/C and heater blower motor variable speed control, helping to optimize HVAC performance passenger comfort. Product Specifications Mounting Bracket Included: Yes.
Harness length - inches: No wire. Terminal Quantity: 4. Number Of Speeds: 3-5 Speed. Detailed Applications Years: Vehicle: 1973-1974Chevrolet C10 Suburban.
Specifically designed for GM applications. Our research and design process leads to seamless integration with the vehicles HVAC system. This improves resistor performance as well offering a longer part life. Years: Vehicle: Fitment Notes: With AC, 1975 1982, 1986 Chevrolet C10 Suburban.
Wiring Harness Included: No.