Engine-Codes.com
Engine-Codes – GMC – B0937 GMC

B0937 GMC Code - Coolant Level Sensor Circuit Range/Performance

Quick Answer

The B0937 GMC code indicates an issue with the coolant level sensor circuit's range or performance. Common causes include Faulty coolant level sensor, Wiring issues in the coolant level sensor circuit, Corrosion or damage to the sensor connectors. 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
B0937 GMC indicates Coolant Level Sensor Circuit Range/Performance.
Common causes
Common causes include Faulty coolant level sensor, Wiring issues in the coolant level sensor circuit, Corrosion or damage to the sensor connectors.
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 27, 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 B0937 GMC Description

The B0937 GMC code indicates an issue with the coolant level sensor circuit's range or performance. The coolant level sensor is responsible for monitoring the coolant level in the vehicle's cooling system. This information is crucial for the proper functioning of the engine, as the coolant helps regulate the engine's temperature and prevent overheating. When the coolant level sensor circuit is not functioning correctly, it can lead to inaccurate readings or a complete failure to detect the coolant level. This can result in various issues with the vehicle's cooling system, potentially causing overheating, engine damage, and reduced performance.

OBDII Code B0937 GMC - Coolant Level Sensor Circuit Range/Performance
B0937 GMC Code - Coolant Level Sensor Circuit Range/Performance

Common Causes of B0937 GMC

  1. Faulty coolant level sensor
  2. Wiring issues in the coolant level sensor circuit
  3. Corrosion or damage to the sensor connectors
  4. Low coolant levels due to leaks or evaporation
  5. Electrical issues in the vehicle's system

Symptoms of B0937 GMC

  1. Dashboard warning light indicating low coolant level
  2. Engine overheating
  3. Coolant leaks under the vehicle
  4. Inaccurate coolant level readings on the dashboard
  5. Engine misfires or rough idling

How to Fix B0937 GMC

  1. Begin by diagnosing the issue using a diagnostic scanner to confirm the B0937 GMC code.
  2. Inspect the coolant level sensor and its wiring for any visible damage or corrosion.
  3. Test the coolant level sensor's functionality using a multimeter to check for proper resistance readings.
  4. Replace the coolant level sensor if it is found to be faulty, ensuring proper installation and connection.
  5. Clear the diagnostic trouble codes, reset the vehicle's computer, and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix B0937 GMC

The typical repair costs for addressing a coolant level sensor circuit range/performance issue can range from $100 to $300, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less for repairs.

Need more information about the B0937 GMC code?

Need more information on how to fix the B0937 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0937 GMC 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 B0937 GMC Code

1. What are common symptoms of OBDII code B0937 GMC?

- Common symptoms include inaccurate coolant level readings on the dashboard, warning lights related to coolant level, and potential overheating issues.

2. What causes the OBDII code B0937 GMC to trigger?

- The code is triggered when the coolant level sensor circuit is reporting a range or performance issue, which may be caused by a faulty sensor, wiring issues, or low coolant levels.

3. How can I diagnose the coolant level sensor circuit for OBDII code B0937 GMC?

- Diagnosing involves checking the sensor's electrical connections, inspecting for any visible damage to the wiring, and verifying the actual coolant level in the reservoir.

4. Can a low coolant level trigger the OBDII code B0937 GMC?

- Yes, a low coolant level can trigger the code because the sensor may not be able to accurately read the coolant level when it falls below a certain point.

5. What are the repair options for OBDII code B0937 GMC?

- Repair options include replacing the coolant level sensor, repairing any damaged wiring or connectors, and ensuring the coolant level is at the proper level.

6. Is it safe to continue driving with OBDII code B0937 GMC triggered?

- It is generally not recommended to drive with this code triggered as inaccurate coolant level readings can lead to overheating issues and potential engine damage.

7. Can a DIY enthusiast fix the OBDII code B0937 GMC issue?

- Depending on the skill level, a DIY enthusiast may be able to address the issue by replacing the coolant level sensor or checking and repairing the wiring connections.

8. How much does it typically cost to repair OBDII code B0937 GMC at a professional mechanic?

- Repair costs can vary depending on the exact cause of the issue, but replacing the coolant level sensor or fixing wiring problems may cost anywhere from $100 to $300 at a mechanic.

9. Will resetting the OBDII code B0937 GMC make the issue go away?

- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the code is not addressed, the code is likely to trigger again.

10. How often does the coolant level sensor circuit need to be replaced in GMC vehicles?

- The coolant level sensor circuit does not typically require frequent replacement unless there is a malfunction, so it is more important to monitor for symptoms and address issues promptly.

Discuss the causes and fixes for B0937 GMC OBDII Code

Submit a New Comment

Code B0937 GMC comments

No comments found for this page.