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P2537 2015 GMC Sierra Code - Ignition Accessory Switch Circuit Low Voltage

Quick Answer

The diagnostic trouble code P2537 in a 2015 GMC Sierra indicates a problem with the ignition accessory switch circuit having low voltage. Common causes include Faulty ignition accessory switch, Damaged wiring or connectors in the circuit, Weak battery. 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
P2537 2015 GMC Sierra indicates Ignition Accessory Switch Circuit Low Voltage.
Common causes
Common causes include Faulty ignition accessory switch, Damaged wiring or connectors in the circuit, Weak battery.
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 12, 2024
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Code P2537 2015 GMC Sierra Description

The diagnostic trouble code P2537 in a 2015 GMC Sierra indicates a problem with the ignition accessory switch circuit having low voltage. The ignition accessory switch is responsible for controlling power to various electrical components in the vehicle, such as the radio, power windows, and interior lights, when the key is in the accessory position. When this circuit is experiencing low voltage, it can lead to issues with starting the vehicle, as well as affecting the functionality of these electrical components.

OBDII Code P2537 2015 GMC Sierra - Ignition Accessory Switch Circuit Low Voltage
P2537 2015 GMC Sierra Code - Ignition Accessory Switch Circuit Low Voltage

Common Causes of P2537 2015 GMC Sierra

  1. Faulty ignition accessory switch
  2. Damaged wiring or connectors in the circuit
  3. Weak battery
  4. Problem with the vehicle's charging system
  5. Corrosion or poor connections in the circuit

Symptoms of P2537 2015 GMC Sierra

  1. Intermittent starting issues
  2. Loss of power to accessories in the accessory position
  3. Dimming or flickering interior lights
  4. Electrical components not functioning properly
  5. Check engine light illuminated

How to Fix P2537 2015 GMC Sierra

  1. Begin by diagnosing the root cause of the low voltage in the ignition accessory switch circuit using a multimeter to test the voltage at various points in the circuit.
  2. Inspect the ignition accessory switch for any signs of damage or wear and replace if necessary.
  3. Check the wiring and connectors in the circuit for any damage, corrosion, or poor connections, repairing or replacing as needed.
  4. Test the battery and charging system to ensure they are functioning correctly and replace any components that are faulty.
  5. Clear the diagnostic trouble code from the vehicle's computer using a scan tool after completing the repairs.

Cost to Fix P2537 2015 GMC Sierra

The typical repair costs for addressing the ignition accessory switch circuit low voltage issue can vary depending on the specific cause of the problem. In general, parts for this repair may range from $50 to $200, while labor costs can vary between $100 and $300. It's important to note that 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 is advisable to check with local auto repair shops for a more accurate estimate of the total repair costs.

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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 P2537 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P2537 in a 2015 GMC Sierra?

- Common symptoms include difficulty starting the vehicle, intermittent stalling, or the inability to turn off the ignition.

2. What does the OBDII code P2537 indicating "Ignition Accessory Switch Circuit Low Voltage" mean for a 2015 GMC Sierra?

- This code indicates that the voltage in the ignition accessory switch circuit is below the predetermined threshold.

3. What are the possible causes of OBDII code P2537 in a 2015 GMC Sierra?

- Potential causes include a faulty ignition switch, damaged wiring in the ignition system, or a malfunctioning ignition relay.

4. How can I diagnose the issue causing OBDII code P2537 in my 2015 GMC Sierra?

- You can start by checking the wiring connections in the ignition system, testing the ignition switch for proper functionality, and inspecting the ignition relay for any signs of damage.

5. Can driving with OBDII code P2537 present cause further damage to my 2015 GMC Sierra?

- Continuously driving with this code present can potentially lead to issues with starting the vehicle or cause further damage to the ignition system components.

6. Is it safe to continue driving my 2015 GMC Sierra with OBDII code P2537?

- It is not recommended to drive the vehicle with this code present, as it may lead to unexpected stalling or other operational issues.

7. How can I repair OBDII code P2537 in my 2015 GMC Sierra?

- Repairing this code typically involves replacing a faulty ignition switch, repairing damaged wiring, or replacing a malfunctioning ignition relay.

8. Are there any DIY tips for fixing OBDII code P2537 in a 2015 GMC Sierra?

- While some basic diagnosis can be done at home, it is recommended to consult a professional mechanic for the accurate identification and repair of the issue.

9. How much can I expect to pay to fix OBDII code P2537 in my 2015 GMC Sierra?

- The cost of repairing this code can vary depending on the root cause of the issue, but it is advisable to budget for diagnostic fees, parts, and labor costs.

10. Can resetting the OBDII system clear the P2537 code in my 2015 GMC Sierra?

- Resetting the OBDII system may temporarily clear the code, but it is essential to address the underlying issue to prevent it from reoccurring.

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