The 2017 Chevy Trax blower motor resistor is a critical component responsible for controlling the speed of the vehicle's blower motor, which affects the heating and air conditioning systems. Understanding how this part functions and recognizing common issues can help owners maintain their vehicle's climate control effectively.

Overview of the Blower Motor Resistor

The blower motor resistor regulates the voltage supplied to the blower motor, allowing it to operate at different speeds. When this component fails, it can lead to various symptoms, including:

  • Blower motor only functioning on high speed
  • Inconsistent blower operation across different settings
  • Complete failure of the blower motor

These issues often stem from overheating, electrical shorts, or damage to the wiring harness.

Common Symptoms of a Failing Resistor

Identifying a failing blower motor resistor can save time and money. Common symptoms include:

  • Only high-speed operation: If the blower only works on the highest setting, it typically indicates a bad resistor.

  • Intermittent operation: The blower may work sporadically or only at certain speeds.

  • No airflow: Complete failure of the blower motor can occur if the resistor is damaged.

Replacement Process

Replacing the blower motor resistor in a 2017 Chevy Trax is relatively straightforward. Here’s how to do it:

1. Disconnect the Battery: Always disconnect the negative battery cable to prevent electrical shocks.

2. Remove the Glove Box: This provides access to the blower motor resistor. Empty and lower the glove box carefully.

3. Locate the Resistor: Find the resistor near the blower motor; it is typically secured with screws.

4. Disconnect Wiring Harness: Carefully disengage the wire harness from the resistor.

5. Remove and Replace: Unscrew the old resistor and replace it with a new one. Reconnect the wiring harness securely.

6. Reassemble: Reinstall the glove box and reconnect the battery.

7. Test Functionality: Start the vehicle and test all blower settings to ensure proper operation.

Potential Issues After Replacement

Even after replacing the resistor, issues may persist due to:

  • Damaged wiring: Inspect for any burnt or damaged wires in the harness that could affect performance.

  • Faulty blower motor: If problems continue, consider testing or replacing the blower motor itself.

  • HVAC control module issues: In some cases, problems may originate from the control panel rather than just the resistor.

FAQs About 2017 Chevy Trax Blower Motor Resistor

    • What causes a blower motor resistor to fail?
      Common causes include overheating due to excessive current draw from a failing blower motor or poor connections in the wiring.
    • How can I test my blower motor resistor?
      You can test it using a multimeter to check for continuity across its terminals as per manufacturer specifications.
    • Is it necessary to replace wiring when changing the resistor?
      If there are signs of burning or damage on the wiring harness, it's advisable to replace it to prevent future failures.

Understanding these aspects of your 2017 Chevy Trax's blower motor resistor can help you troubleshoot issues effectively and ensure your vehicle's climate control system operates smoothly.