AC DELCO 64512QTZN Hvac Blower Motor Resistor Connector

( Brand: Ac Delco ), ( Manufacturer Part Number: 64512QTZN ), ( Part Type: Hvac Blower Motor Resistor ), ( Manufacturer Warranty: 12 Month Warranty ), ( Notes: Gold New; Black; 7 Terminal. Female; 7 Terminal. ), ( Years: 1999 2000 ), ( Application: Chevrolet K2500 Hvac Blower Motor Resistor Connector ), ( Cs-sku: 400 )

Review AC DELCO Chevrolet Hvac Blower Motor Resistor Connector fits K2500 1999–2000

The **AC Delco 64512QTZN** is a high-quality, direct-fit replacement blower motor resistor connector designed specifically for the HVAC system of Chevrolet K2500 models, ensuring seamless integration and optimal performance. Engineered to meet or exceed OEM specifications, this resistor connector plays a critical role in regulating the airflow speed of the vehicle s blower motor, allowing drivers to adjust ventilation levels from minimal to maximum with precision. Crafted from durable, corrosion-resistant materials, this component is built to withstand the demanding conditions of daily driving, including exposure to moisture, temperature fluctuations, and electrical stress, which helps prevent premature failure and ensures long-term reliability. The connector features a robust, secure mounting design that minimizes vibration-induced wear, while its precise wiring configuration guarantees a clean, interference-free connection to the blower motor and HVAC control module. Whether used in cold climates where defrosting is essential or in hot weather for efficient cooling, this resistor connector maintains consistent performance, contributing to a comfortable cabin environment. Ideal for both professional mechanics and DIY enthusiasts, the **AC Delco 64512QTZN** is a straightforward, no-fuss upgrade that restores proper airflow control, eliminates erratic blower motor behavior, and helps avoid costly HVAC system malfunctions. With its compatibility across select Chevrolet K2500 trims and its reputation for durability, this part is a trusted solution for restoring the full functionality of your vehicle s climate control system.

The **AC Delco 64512QTZN** is a replacement blower motor resistor/connector assembly designed for Chevrolet K2500 vehicles with HVAC systems. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

---

### **Pros of buying a AC Delco 64512QTZN**

1. **OEM Quality and Compatibility**

The part is manufactured by **AC Delco**, a trusted brand known for producing high-quality aftermarket components that meet or exceed OEM specifications. It is specifically designed for the Chevrolet K2500, ensuring a proper fit and reliable performance.

2. **Direct Replacement**

This is a **complete resistor/connector assembly**, meaning it replaces the entire unit rather than just a single component. This eliminates the need to source individual parts (e.g., resistors, connectors, wiring harnesses) separately, simplifying the installation process.

3. **Reliability and Durability**

AC Delco parts are built to last, often featuring robust materials and construction that reduce the risk of early failure. The resistor assembly is designed to handle the electrical load of the blower motor without overheating or degrading quickly.

4. **Warranty Coverage**

AC Delco typically offers a **limited warranty** (usually 1 2 years) on their parts, providing some assurance against manufacturing defects. This can be valuable if the part fails prematurely due to a flaw.

5. **Ease of Installation**

Since it is a direct replacement, the installation process is straightforward for most mechanics or DIYers. The part comes pre-assembled, reducing the time and effort required compared to sourcing and wiring individual components.

6. **Compatibility with Aftermarket Upgrades**

If you plan to upgrade your blower motor or HVAC system, this resistor assembly is likely compatible with aftermarket components, as it adheres to industry standards.

7. **Availability and Support**

AC Delco is widely available through auto parts stores (e.g., AutoZone, O Reilly, RockAuto) and online retailers. Customer support and technical resources are also readily accessible for troubleshooting or installation guidance.

---

### **Cons of buying a AC Delco 64512QTZN**

1. **Cost**

As an OEM-quality part, the **AC Delco 64512QTZN is more expensive** than generic or no-name aftermarket alternatives. For budget-conscious buyers, this may be a significant drawback, especially if the original part was already failing due to normal wear rather than a defect.

2. **Potential Overkill for Minor Issues**

If the failure is isolated to a single resistor or connector (rather than the entire assembly), replacing the whole unit may be unnecessary. In such cases, a **cheaper resistor-only replacement** (if available) could be a more cost-effective solution.

3. **Mixed Reviews on Longevity**

While AC Delco parts are generally reliable, some users report that the resistor assemblies in certain vehicles (including some K2500 models) may still fail over time, particularly if the vehicle is driven in harsh conditions (e.g., extreme heat, frequent short trips). This is not unique to AC Delco but is a general issue with resistor assemblies.

4. **Installation Complexity for Non-Mechanics**

While the part is designed for easy replacement, some users may find the process challenging if they lack mechanical experience, particularly if the wiring harness or mounting points are corroded or damaged. Professional installation may be required.

5. **Limited Customization**

Unlike some aftermarket alternatives, this part does not offer customizable resistance settings or additional features. If you need specific blower motor speeds or adjustments, you may need to pair it with a compatible motor.

6. **Potential Counterfeit Concerns**

When purchasing online (especially from third-party sellers), there is a risk of receiving a **counterfeit or low-quality AC Delco part**. To mitigate this, always buy from reputable sellers (e.g., RockAuto, Amazon with verified sellers) and check for authenticity markings.

---

### **Conclusion**

The **AC Delco 64512QTZN** is a **strong choice** for replacing a faulty blower motor resistor/connector assembly in a Chevrolet K2500, particularly if you prioritize **reliability, ease of installation, and OEM compatibility**. Its pros such as high-quality construction, direct replacement functionality, and warranty coverage make it a dependable option for most users. However, the **higher cost** and the fact that it may be an overkill for minor failures are valid considerations.

If your budget is tight or the failure is isolated to a single component, exploring **generic resistor replacements** or checking for aftermarket alternatives (e.g., from brands like **Dorman, Motorcraft, or local specialty shops**) could save money without sacrificing too much quality. Conversely, if you value **long-term reliability and ease of installation**, the AC Delco part is a safe and practical investment.

---

### **Recommendation**

- You want an **OEM-quality, hassle-free replacement** with minimal risk of compatibility issues.

- You are replacing the **entire resistor assembly** (not just a single resistor).

- You value **warranty coverage** and brand reputation.

- You are comfortable with a **slightly higher upfront cost** for peace of mind.

- The failure is **isolated to a single resistor or connector**, and you want to save money.

- You find a **highly rated generic or aftermarket resistor assembly** (e.g., from Dorman or a trusted local supplier) at a significantly lower price.

- You are unsure about the exact cause of the failure and want to diagnose it further before purchasing.

**Final Verdict:** For most Chevrolet K2500 owners, the **AC Delco 64512QTZN is the best all-around choice** due to its reliability and ease of use. However, always verify the exact symptoms of failure and compare prices to ensure you are making the most cost-effective decision.

Details:

Weather Resistant: No Meets or Exceeds OEM Specifications: Yes Features: Manufactured to meet expectations for fit, form, and function. 12 Month Warranty Fitment Notes: Vehicle: 1999 - 2000 Chevrolet K2500. Parts Geek - For Chevrolet K2500 HVAC Blower Motor Resistor Connector AC Delco 64512QTZN: Review Fitment Notes to Ensure Proper Fit condition: New Brand: Notes: Gold New; BlAck; 7 TERMINAL. Female; 7 TERMINAL.

part #: 64512qtzn prices

• $29.18-$57.45

specifications chvyblowermotor:

• for makes: Chevrolet
• for years: 1999-2000
• brand: Ac Delco
• mpn: 64512qtzn
• part type: Hvac Blower Motor Resistor
• manufacturer warranty: 12 Month Warranty
• notes: Gold New; Black; 7 Terminal. Female; 7 Terminal.
• years: 1999 2000
• application: Chevrolet K2500 Hvac Blower Motor Resistor Connector
• cs-sku: 400

returns chvyblowermotor:

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

payments chvyblowermotor:

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

seller chvyblowermotor:

• city: Louisiana, Missouri
• rating: 98.8%
• # reviews: 329636

shipping chvyblowermotor:

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

general chvyblowermotor:

• Air Conditioning Heating > Blowers Fans > HVAC Blower Motors Wheels
• condition: New

offer chvyblowermotor:

• availability: In Stock
• started: April 22, 2026
• quantity: 1
• sold: 0
• options: Ship-to-home

Ac Delco 64512QTZN Is Similar To:

• 0021625633268 Ac Delco Blower Motor Chevy Olds Chevrolet Malibu (40.6% similar) This is a pre owned Ac Delco blower motor in good condition...(March 3rd, 2018)
• Modulator Hvac V6 Impala Vacuum Ac Chevy 063515605 2000 Heater 3.4l (19.7% similar) What about broken tabs or pieces a as they are used parts scratches, blemishes and misc dirt and grime is possible. Most of the time this means the left side is the drivers side and the right is the passenger side. Q does this item have rust, scratches or blemishes. Basically if you see it in the ...(July 10th, 2015)
• Blower Ac 071877 Vin Motor 11 Option Aveo C60 10 Frm Wave (28.8% similar) 3NUMBER of . The parts compatibility list may not have all options listed...(November 16th, 2014)
• 10021027 Shinehome Updated Hvac Blower Motor Resistor Ac Control 689743129782 (47.4% similar) 4P1516 updated hvAc blower motor resistor, Ac control module for Chevy chevrolet Buick rainier Cadillac GMC envoy sierra Yukon Isuzu Oldsmobile Saab REGULATOR4P1516...(February 25th, 2019)
• 102521 Astrovan 90 91 92 93 94 95 Chevy Astro Blower Motor Front W Integral Ac (40.5% similar) If an item arrives damaged, please via message within 24 hours for instructions. No expedited shipping is available...(April 18th, 2016)
• 1135258 Delco Ac Compressor For Gm Products With Pontiac Buick Olds (32.4% similar) Pontiac G6TO 05, century 94 Malibu 97 03, impala and 04 05. Check with rock auto for a complete list...(December 3rd, 2018)
• 137174 Camaro 89 90 91 92 Chevy Blower Motor W Integral Ac (40.6% similar) We pull the part after you purchase it and inspect it for any damage. Please be understanding to the circumstances. Please be understanding to the circumstances. We pull the part after you purchase it and inspect it for any damage. Some parts may become damaged after we post them while they are in ...(January 25th, 2016)
• Resistor Ac-delco 52462693 Astro Chevrolet 93 15-71995 Motor 95 94 Blower (45.9% similar) Shipping should combine itself for multiple purchase's, if not please let me know I will combine for you. Credits take 1/2 weeks for processing. Blower motor resistor chevrolet Astor Ac Delco Ac Delco blower motor resistor for many gm vehicles see complete list below, new in the original Ac Delco ...(January 17th, 2015)
• Delco Pickup 15-80173 Chevy Gm Buick 19189064 Gmc Motor Pontiac Truck Blower Ac (32.5% similar) ...(March 29th, 2015)
• 15-80175 Ac Delco Blower Motor (40% similar) All expedited orders must be received before 12 pm PST noon Pacific standard time to leave same day. Usually this is due to the delivery location or size, weight, and dimensions of package. Return shipping is absolutely free. Why so long. Shipping price for this item is to the continental 48 states ...(March 31st, 2017)
• 15-80182 Ac Delco Blower Motor New Chevy Le Sabre 0021625484853 (39.1% similar) Each warranty gives you specific rights, and may have other rights which vary from state. Some manufacturers require that you register your product to Activate its warranty. Please for any questions. The manufacturers warranty shall be exclusive remedy for any such product defect or failure...(May 23rd, 2018)