1. Chevrolet Climate Controls & Control Units To Buy
  2. sku: 11399605341518604
  3. AUTOPART PREMIUM 77TYSV

AUTOPART PREMIUM 77TYSV Hvac Control Module

fits make: Chevy. year: 1996–1999.

77tysv Autopart Premium Hvac Control Module Fits Chevy C1500 1996-1999

( Brand: Autopart Premium ), ( Manufacturer Part Number: 77TYSV ), ( Part Type: Hvac Control Module ), ( Engine: 6.5l V8, 5.7l V8, 4.3l V6, 5.0l V8, 4.1l 6 Cyl ), ( Trim: Extended, Cab, Pickup, Base, Standard, Wt, Silverado, Cheyenne ), ( Compatible Make/model: Chevrolet C1500 ), ( Compatible Years: 1997 1998 1996 1999 97 98 96 99 ), ( Fitment Info: Hvac Control Module Location ), ( Manufacturer Warranty: 12 Month Warranty ), ( Attention: Read Full Description To Confirm Fitment ), ( Cs-sku: 400 )

Review AUTOPART PREMIUM Hvac Control Module Chevy fits C1500 1996–1999

The **Autopart 77TYSV HVAC Control Module** is a high-quality, direct-fit replacement designed specifically for **Chevrolet C1500 pickup trucks** manufactured between **1996 and 1999**, ensuring seamless integration with your vehicle s climate control system. This module serves as the central hub for your truck s heating, ventilation, and air conditioning functions, allowing you to adjust temperature, fan speed, and airflow direction with precision. Crafted with durable components and engineered to meet or exceed OEM standards, this module eliminates common issues such as erratic temperature fluctuations, unresponsive controls, or complete HVAC system failure, which often plague aging or faulty factory units. The 77TYSV is built to withstand the rigors of daily use, featuring robust wiring connections and a sturdy housing that resists wear from vibration and temperature variations, a common concern in heavy-duty applications like truck cabins. Whether your HVAC system is exhibiting intermittent malfunctions, displaying error codes, or simply failing to respond to your inputs, this replacement module provides a reliable, long-lasting solution that restores full functionality to your climate control system. Installation is straightforward, requiring only basic tools and a few minutes of your time, as it is designed to drop right into place without the need for modifications. With its direct-fit compatibility, this module ensures that your Chevy C1500 s interior remains comfortable year-round, whether you're navigating harsh winter conditions or battling the heat of a summer road trip. Upgrade to the Autopart 77TYSV HVAC Control Module and experience the peace of mind that comes with a fully operational, responsive climate control system tailored to your truck s exact specifications.

### **Pros and Cons of Buying a Used Automotive HVAC Control Module (Part #77TYS-V) for a 1996-1999 Chevrolet C1500**

#### **Pros:**

1. **Cost-Effective Replacement** Purchasing a used or aftermarket module is significantly cheaper than buying a new OEM part, which can cost $150 $300 or more. A used module may be available for $30 $80, depending on condition and source.

2. **Compatibility** The **77TYS-V** module is designed specifically for the **1996 1999 Chevrolet C1500 (and some GMC Sierra)** with the **4.3L V6 or 5.0L V8 engines**, ensuring direct fitment without modification.

3. **Common Failure Point** Many owners of these trucks experience **HVAC control module failures** due to age, electrical issues, or water damage. Replacing it often restores proper climate control functionality, including **fan speed, temperature settings, and defroster operation**.

4. **Easy Installation** The module is typically located behind the glove compartment or under the dashboard and is connected via a **10 15 pin connector**. Replacement usually requires basic tools and minimal wiring knowledge.

5. **Prevents Further Damage** A failing HVAC module can sometimes cause **intermittent electrical issues** or **short circuits** that may affect other systems. Replacing it early can prevent secondary problems.

6. **Aftermarket & Remanufactured Options** If buying new, some **remanufactured or upgraded modules** (from brands like **Delco, ACDelco, or local auto parts stores**) may offer better reliability than a used unit.

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#### **Cons:**

1. **Reliability Concerns with Used Modules** A used module may have **pre-existing damage** (burnt traces, corroded pins, or internal failure) that isn t immediately visible. Testing with a **multimeter or scan tool** is recommended before purchase.

2. **Potential for Counterfeit or Mismatched Parts** Some online sellers may offer **fake or incompatible modules**, leading to **no functionality or further electrical issues**. Always verify the part number and source.

3. **Electrical Issues Persist** If the problem stems from **corroded wiring, a bad fuse, or a failing blower motor resistor**, replacing just the module may not solve the issue. A **full HVAC system diagnosis** is advisable.

4. **Limited Warranty on New/Remanufactured Parts** If purchasing a new or remanufactured module, warranties may be short (30 90 days), leaving you exposed if it fails soon after installation.

5. **Skill Dependency** If you re not comfortable with **electrical work or wiring diagnostics**, improper installation could lead to **short circuits or permanent damage** to the system.

6. **Age of the Truck May Affect Longevity** If the rest of the HVAC system (blower motor, resistor, vents) is **old and worn**, replacing just the module may only provide temporary relief.

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### **Conclusion & Recommendation**

#### **Best Approach:** 1. **Diagnose First** Before buying, confirm that the **HVAC control module is indeed the issue** by checking for:

- **No response** from climate control buttons.

- **Random fan speeds** or **temperature fluctuations**.

- **Burnt smell** near the module (sign of electrical failure).

Use a **multimeter** to test for **continuity and voltage** at the module s connector.

2. **Source the Module Carefully:**

- **Used Module (Cheapest Option)** Buy from a **trusted local auto parts dealer, junkyard, or reputable online seller** (e.g., eBay, Facebook Marketplace). Inspect for **physical damage** and test if possible.

- **Remanufactured/New Module (Best Balance)** Brands like **Delco, ACDelco, or local auto electric shops** often sell **rebuilt modules with warranties**. This is the **most reliable middle ground**.

- **Avoid No-Name Brands** Cheap generic modules may not work or could cause **further electrical problems**.

3. **Install Properly** Follow **Chevy-specific wiring diagrams** (available on **Chilton, Haynes, or YouTube tutorials**) to ensure correct connector alignment and secure mounting.

4. **Consider a Full HVAC Check** If the issue persists after replacement, inspect:

- **Blower motor resistor** (common failure point).

- **Wiring harness** for corrosion or breaks.

- **Fuses and relays** related to the HVAC system.

#### **Final Recommendation:**

- **If on a tight budget and confident in sourcing a quality used module**, proceed with caution and test before installing.

- **For best long-term reliability**, invest in a **remanufactured OEM or high-quality aftermarket module** (e.g., **Delco 77TYS-V or equivalent**) with a warranty.

- **If unsure about electrical work**, consult a **trusted mechanic** to diagnose and install the part properly.

A **failing HVAC control module** is a common and fixable issue in these trucks, but **proper sourcing and installation** are key to avoiding frustration and additional costs.

Details:

Autopart Premium HVAC Control Module fits Chevy C1500 1996 - 1999 77TYSV: Brand: condition: New Notes: Location: Front; Without Rear Window Defogger Detailed AC Heater Climate for Tahoe GMC Yukon K2500 1996 20 Specifications Terminal Quantity: 7. Mounting Type: Bolt On. 1996 - 1998 Chevrolet C1500 WT Standard Cab Pickup 5.7L V8. Rear Defrost Option Included: No.

Terminal Type: Blade. 1999 Chevrolet C1500 LS Extended Cab Pickup 5.0L V8. 1996 - 1998 Chevrolet C1500 Silverado Extended Cab Pickup 5.0L V8. Control Type: Manual.

part #: 77tysv price

  • $68.25

specifications chvyacheatercontrols:

  • for makes: Chevy
  • for years: 1996-1999
  • brand: Autopart Premium
  • mpn: 77tysv
  • part type: Hvac Control Module
  • engine: 6.5l V8, 5.7l V8, 4.3l V6, 5.0l V8, 4.1l 6 Cyl
  • trim: Extended, Cab, Pickup, Base, Standard, Wt, Silverado, Cheyenne
  • compatible make/model: Chevrolet C1500
  • compatible years: 1997 1998 1996 1999 97 98 96 99
  • fitment info: Hvac Control Module Location
  • manufacturer warranty: 12 Month Warranty
  • attention: Read Full Description To Confirm Fitment
  • cs-sku: 400

general chvyacheatercontrols:

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

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for makes: chevy, for years: 1996-1999, part type: hvac control module, engine: 6.5l v8, 5.7l v8, 4.3l v6, 5.0l v8, 4.1l 6 cyl, trim: extended, cab, pickup, base, standard, wt, silverado, cheyenne, compatible make/model: chevrolet c1500, compatible years: 1997 1998 1996 1999 97 98 96 99, fitment info: hvac control module location, manufacturer warranty: 12 month warranty, attention: read full description to confirm fitment, cs-sku: 400,
category: auto parts > car truck parts accessories > air conditioning heating > hvac controls control units, sku: 11399605341518604,
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