AutoCodes – GMC – P2537 2015 GMC Sierra

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

Quick Answer

The control module continuously monitors the voltage on the Ignition Accessory/Run circuit from the Body Control Module (BCM). Common causes include Faulty Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control Module circuit poor electrical connection. 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 Body Control Module (BCM), Body Control Module harness is open or shorted, Body Control Module circuit poor electrical connection.
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.

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Code Popularity 255

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 21, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2537 2015 GMC Sierra Description

The control module continuously monitors the voltage on the Ignition Accessory/Run circuit from the Body Control Module (BCM). When the ignition is in the ACCESSORY or RUN position, the BCM sends a 12 V wake-up signal to the control module. This wake-up signal allows the control module to power up and start functioning before the engine is started. The Diagnostic Trouble Code (DTC) will be set when the control module detects the Ignition Accessory/Run circuit is less than 6 V for 1 min.

OBDII Code P2537 2015 GMC Sierra - Ignition Accessory Switch Circuit Low Voltage - AutoCodes.com — P2537 2015 GMC Sierra Code - Ignition Accessory Switch Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2537 2015 GMC Sierra?

Faulty Body Control Module (BCM)
Body Control Module harness is open or shorted
Body Control Module circuit poor electrical connection

How to Fix the DTC P2537 2015 GMC Sierra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2537 2015 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P2537 2015 GMC Sierra code?

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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.