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P0116 2017 GMC Sierra Code - Engine Coolant Temperature Sensor Performance

Quick Answer

The P0116 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the Engine Coolant Temperature (ECT) sensor's performance. Common causes include Faulty ECT sensor, Wiring or connector issues, Coolant level or quality problems. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0116 2017 GMC Sierra indicates Engine Coolant Temperature Sensor Performance.
Common causes
Common causes include Faulty ECT sensor, Wiring or connector issues, Coolant level or quality problems.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P0116 2017 GMC Sierra Description

The P0116 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the Engine Coolant Temperature (ECT) sensor's performance. The ECT sensor is a crucial component of the vehicle's engine management system, as it monitors the temperature of the engine coolant. This information is vital for the engine control module (ECM) to adjust fuel delivery and ignition timing, ensuring optimal engine performance and efficiency.

OBDII Code P0116 2017 GMC Sierra - Engine Coolant Temperature Sensor Performance
P0116 2017 GMC Sierra Code - Engine Coolant Temperature Sensor Performance

Common Causes of P0116 2017 GMC Sierra

  1. Faulty ECT sensor
  2. Wiring or connector issues
  3. Coolant level or quality problems
  4. ECM software or hardware issues
  5. Cooling system malfunctions

Symptoms of P0116 2017 GMC Sierra

  1. Check engine light illuminated
  2. Poor fuel economy
  3. Rough idling or stalling
  4. Hesitation during acceleration
  5. Engine overheating

How to Fix P0116 2017 GMC Sierra

  1. Begin by diagnosing the ECT sensor using a scan tool to verify the code and check for any related issues.
  2. Inspect the ECT sensor, wiring, and connectors for any visible damage or corrosion. Replace any damaged components.
  3. Test the ECT sensor's resistance and voltage to ensure it is functioning within specifications.
  4. If the ECT sensor is faulty, replace it with a new sensor that meets OEM specifications.
  5. Clear the DTC and perform a test drive to verify that the issue has been resolved.

Cost to Fix P0116 2017 GMC Sierra

The typical repair costs for addressing a P0116 code on a 2017 GMC Sierra can vary depending on the specific cause of the issue and the cost of parts and labor. On average, replacing an ECT sensor can range from $50 to $150, while labor costs can add an additional $80 to $150. However, it's important to note that labor rates at auto repair shops can vary based on location, vehicle make and model, and the shop's hourly rates. It's advisable to check with local shops for a more accurate estimate.

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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 P0116 2017 GMC Sierra Code

1. What does the OBDII code P0116 mean for a 2017 GMC Sierra?

P0116 indicates a problem with the Engine Coolant Temperature (ECT) sensor, specifically that its performance is out of the expected range during operation.

2. What are common symptoms of the P0116 code on a 2017 GMC Sierra?

Symptoms may include poor fuel efficiency, engine overheating or running too cool, difficulty starting, or the check engine light being illuminated.

3. What causes the P0116 code on a GMC Sierra?

Common causes include a faulty ECT sensor, wiring issues, corroded connectors, a stuck thermostat, or low coolant levels.

4. Can I drive my 2017 GMC Sierra with a P0116 code?

Driving with a P0116 code is not recommended, as it can lead to engine performance issues, overheating, or potential damage if the root cause isn’t addressed.

5. How do I fix the P0116 code on my GMC Sierra?

Repairs may involve replacing the ECT sensor, repairing damaged wiring, cleaning corroded connectors, refilling low coolant, or replacing a faulty thermostat.

6. How can I diagnose the P0116 code on a 2017 GMC Sierra?

Use an OBDII scanner to confirm the code, inspect the ECT sensor and wiring, check the thermostat operation, and ensure the coolant level is adequate.

7. Where is the ECT sensor located on a 2017 GMC Sierra?

The ECT sensor is typically located near the engine thermostat housing, where the coolant temperature is monitored.

8. How much does it cost to repair a P0116 code on a GMC Sierra?

Repair costs vary but generally range from $50 to $200 for parts and labor, depending on whether the ECT sensor, thermostat, or wiring needs replacement.

9. What happens if I ignore the P0116 code on my GMC Sierra?

Ignoring the code can result in poor engine performance, increased fuel consumption, overheating, or long-term engine damage.

10. Can low coolant cause a P0116 code on a 2017 GMC Sierra?

Yes, low coolant levels can cause inaccurate temperature readings, triggering the P0116 code. Always ensure the coolant is at the proper level.

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