Engine-CodesGMC – P2534 2016 GMC Sierra

P2534 2016 GMC Sierra Code - Ignition On/Start Switch Circuit Low Voltage

Quick Answer

The diagnostic trouble code P2534 in a 2016 GMC Sierra indicates an issue with the Ignition On/Start Switch Circuit Low Voltage. Common causes include Faulty ignition switch, Damaged wiring or connectors in the ignition switch 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
P2534 2016 GMC Sierra indicates Ignition On/Start Switch Circuit Low Voltage.
Common causes
Common causes include Faulty ignition switch, Damaged wiring or connectors in the ignition switch 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.
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P2534 2016 GMC Sierra Description

The diagnostic trouble code P2534 in a 2016 GMC Sierra indicates an issue with the Ignition On/Start Switch Circuit Low Voltage. This code is triggered when the voltage in the ignition switch circuit falls below the expected range. The ignition switch is a crucial component that allows the driver to start the vehicle by turning the key. When this circuit's voltage is too low, it can lead to difficulties in starting the vehicle, erratic behavior in the electrical systems, and potential safety hazards.

OBDII Code P2534 2016 GMC Sierra - Ignition On/Start Switch Circuit Low Voltage
P2534 2016 GMC Sierra Code - Ignition On/Start Switch Circuit Low Voltage

Common Causes of P2534 2016 GMC Sierra

  1. Faulty ignition switch
  2. Damaged wiring or connectors in the ignition switch circuit
  3. Weak battery
  4. Malfunctioning ignition switch relay
  5. Corrosion in the ignition switch circuit

Symptoms of P2534 2016 GMC Sierra

  1. Intermittent starting issues
  2. Delayed engine start
  3. Erratic behavior in electrical systems
  4. Warning lights on the dashboard
  5. Inability to turn the key in the ignition switch

How to Fix P2534 2016 GMC Sierra

  1. Begin by conducting a thorough inspection of the ignition switch circuit, checking for any visible damage or corrosion.
  2. Test the voltage in the ignition switch circuit using a multimeter to determine if it falls below the expected range.
  3. Replace the ignition switch if it is found to be faulty, ensuring proper installation and connection.
  4. Repair or replace any damaged wiring or connectors in the ignition switch circuit.
  5. Test the vehicle to ensure that the issue has been resolved and that the ignition switch circuit is functioning correctly.

Cost to Fix P2534 2016 GMC Sierra

The typical repair costs for addressing the P2534 code in a 2016 GMC Sierra can vary depending on the specific cause of the issue. On average, the cost of replacing an ignition switch can range from $150 to $300, while repairing damaged wiring or connectors may cost between $100 and $200. Labor costs at auto repair shops can range from $80 to $150 per hour, so the total repair cost can vary based on the extent of the repairs needed. It is advisable to consult with a qualified mechanic to get an accurate estimate based on the specific diagnosis and repair requirements for your vehicle.

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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 P2534 2016 GMC Sierra Code

1. What does the OBDII code P2534 mean on a 2016 GMC Sierra?

P2534 indicates that the Powertrain Control Module (PCM) has detected low voltage in the Ignition On/Start Switch Circuit.

2. What are the common symptoms of code P2534 in a 2016 GMC Sierra?

Common symptoms include difficulty starting the vehicle, intermittent stalling, a no-start condition, or the Check Engine Light turning on.

3. What causes the P2534 code on a 2016 GMC Sierra?

Possible causes include a faulty ignition switch, damaged or corroded wiring in the ignition circuit, a weak battery, or a malfunctioning PCM.

4. Can a bad battery trigger code P2534 in a 2016 GMC Sierra?

Yes, a weak or failing battery can lead to low voltage in the ignition circuit, potentially triggering the P2534 code.

5. How can I diagnose code P2534 on my 2016 GMC Sierra?

Start by checking the battery voltage and connections, inspecting ignition switch wiring for damage or corrosion, and using a scan tool to monitor the ignition circuit voltage.

6. Can I drive my 2016 GMC Sierra with a P2534 code?

Driving with this code is not recommended, as it can cause starting issues or lead to stalling, which may compromise safety.

7. How do I fix code P2534 on a 2016 GMC Sierra?

Repairs may include replacing a faulty ignition switch, repairing or replacing damaged wiring, cleaning corroded connections, or recharging/replacing the battery.

8. Is the ignition switch the most common culprit for code P2534 in a 2016 GMC Sierra?

Yes, a faulty ignition switch is one of the most common causes of this code, but the issue could also stem from wiring or battery problems.

9. How much does it cost to repair code P2534 on a 2016 GMC Sierra?

Repair costs vary but may range from $150 to $500, depending on whether the issue involves the ignition switch, wiring repairs, or battery replacement.

10. Can a faulty PCM cause code P2534 on a 2016 GMC Sierra?

While rare, a malfunctioning PCM could cause this code. However, it is more likely to be an issue with the ignition switch or circuit wiring.

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