Engine-Codes.com
Engine-Codes – Chevrolet – P0647 2017 Chevrolet Silverado

P0647 2017 Chevrolet Silverado Code - Air Conditioning Compressor Clutch Relay Control Circuit High Voltage

Quick Answer

The diagnostic trouble code P0647 in a 2017 Chevrolet Silverado indicates a problem with the air conditioning compressor clutch relay control circuit having high voltage. Common causes include Faulty air conditioning compressor clutch relay, Wiring issues in the control circuit, Corrosion or loose connections in the electrical system. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
P0647 2017 Chevrolet Silverado indicates Air Conditioning Compressor Clutch Relay Control Circuit High Voltage.
Common causes
Common causes include Faulty air conditioning compressor clutch relay, Wiring issues in the control circuit, Corrosion or loose connections in the electrical system.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0647 2017 Chevrolet Silverado Description

The diagnostic trouble code P0647 in a 2017 Chevrolet Silverado indicates a problem with the air conditioning compressor clutch relay control circuit having high voltage. The air conditioning compressor clutch relay is responsible for engaging and disengaging the compressor clutch, which controls the operation of the air conditioning system. When the control circuit has high voltage, it means that there is an issue with the electrical signal that controls the relay, potentially causing the compressor clutch to engage when it shouldn't or not engage when it should.

OBDII Code P0647 2017 Chevrolet Silverado - Air Conditioning Compressor Clutch Relay Control Circuit High Voltage
P0647 2017 Chevrolet Silverado Code - Air Conditioning Compressor Clutch Relay Control Circuit High Voltage

Common Causes of P0647 2017 Chevrolet Silverado

  1. Faulty air conditioning compressor clutch relay.
  2. Wiring issues in the control circuit.
  3. Corrosion or loose connections in the electrical system.
  4. Issues with the air conditioning compressor itself.
  5. Electrical system malfunctions or shorts.

Symptoms of P0647 2017 Chevrolet Silverado

  1. Lack of cold air coming from the air conditioning system.
  2. Inconsistent cooling performance.
  3. Air conditioning system not engaging at all.
  4. Unusual noises coming from the air conditioning compressor.
  5. Check engine light illuminated on the dashboard.

How to Fix P0647 2017 Chevrolet Silverado

  1. Begin by diagnosing the specific cause of the high voltage in the air conditioning compressor clutch relay control circuit using a diagnostic scanner.
  2. Inspect the wiring and connections in the control circuit for any signs of damage, corrosion, or loose connections.
  3. Test the air conditioning compressor clutch relay to determine if it is functioning correctly. Replace the relay if necessary.
  4. Check the air conditioning compressor for any issues that may be causing the high voltage in the control circuit. Repair or replace the compressor as needed.
  5. Clear the diagnostic trouble code from the vehicle's computer system and test the air conditioning system to ensure proper operation.

Cost to Fix P0647 2017 Chevrolet Silverado

The typical repair costs for addressing a P0647 code in a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue. On average, the cost of parts for replacing a faulty air conditioning compressor clutch relay can range from $50 to $150. Labor costs for diagnosing and repairing the issue can range from $100 to $300. Overall, the total repair cost for this issue may fall between $150 and $450. It is important to note that these are rough estimates, and actual costs may vary based on factors such as location, labor rates, and the extent of the repairs needed. It is advisable to consult with a qualified mechanic or auto repair shop to get a more accurate cost estimate for addressing this specific issue.

Need more information about the P0647 2017 Chevrolet Silverado code?

Need more information on how to fix the P0647 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0647 2017 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0647 2017 Chevrolet Silverado Code

No Frequently Asked Questions about P0647 2017 Chevrolet Silverado Code found.

Discuss the causes and fixes for P0647 2017 Chevrolet Silverado OBDII Code

Submit a New Comment

Code P0647 2017 Chevrolet Silverado comments

No comments found for this page.