P2537 2016 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 2016 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.
Code P2537 2016 GMC Sierra Description
What are the Possible Causes of the DTC P2537 2016 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 2016 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 2016 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.
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Frequently Asked Questions about P2537 2016 GMC Sierra Code
1. What does the OBDII code P2537 mean on a 2016 GMC Sierra?
P2537 indicates that the Powertrain Control Module (PCM) has detected low voltage in the ignition accessory switch circuit.
2. What are the common symptoms of code P2537 in a 2016 GMC Sierra?
Common symptoms include difficulty starting the vehicle, intermittent accessory power loss, dim or unresponsive interior electronics, and the illumination of the check engine light.
3. What causes the P2537 code to appear on a 2016 GMC Sierra?
Possible causes include a faulty ignition switch, damaged or corroded wiring, a weak battery, or a malfunctioning PCM.
4. Can a weak battery trigger the P2537 code?
Yes, a weak or failing battery can cause low voltage in the ignition accessory switch circuit, which may trigger the P2537 code.
5. How do I diagnose the P2537 code on my 2016 GMC Sierra?
Start by checking the battery voltage, inspecting the ignition switch for damage, examining the wiring and connectors for corrosion or wear, and testing the PCM for proper operation.
6. Can I drive my 2016 GMC Sierra with the P2537 code active?
While the vehicle may still be drivable, it is not recommended to ignore the code as it may lead to further electrical issues or affect starting and accessory functions.
7. How do I fix the P2537 code on a 2016 GMC Sierra?
Repairs may include replacing the ignition switch, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming or replacing the PCM if necessary.
8. How much does it cost to fix the P2537 code on a 2016 GMC Sierra?
Repair costs can vary widely depending on the root cause, but replacing an ignition switch typically costs between $150 and $300, while wiring repairs or PCM replacement could increase the cost.
9. Can a blown fuse cause the P2537 code?
Yes, a blown fuse in the ignition circuit can disrupt voltage flow and trigger the P2537 code.
10. Will clearing the P2537 code solve the problem?
Clearing the code may turn off the check engine light temporarily, but the underlying issue must be addressed to prevent the code from returning.
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