AutoCodes – GMC – P2534 2014 GMC Sierra

P2534 2014 GMC Sierra Code - Ignition On/Start Switch Circuit Low Voltage

Quick Answer

The Body Control Module (BCM) controls the ignition main relay through the control circuit by applying a voltage to the circuit. Common causes include Faulty Ignition On/Start Switch, Ignition On/Start Switch harness is open or shorted, Ignition On/Start Switch 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: P2534 2014 GMC Sierra indicates Ignition On/Start Switch Circuit Low Voltage.
Common causes: Common causes include Faulty Ignition On/Start Switch, Ignition On/Start Switch harness is open or shorted, Ignition On/Start Switch 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 327

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 Aug 12, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2534 2014 GMC Sierra Description

The Body Control Module (BCM) controls the ignition main relay through the control circuit by applying a voltage to the circuit. The control module samples the system voltage on the Ignition 1 voltage circuit from the ignition main relay every 0.1 s.
The Diagnostic Trouble Code (DTC) will be set when the control module detects 6 V or less on the ignition voltage circuit, with the ignition, turned ON.

OBDII Code P2534 2014 GMC Sierra - Ignition On/Start Switch Circuit Low Voltage - AutoCodes.com — P2534 2014 GMC Sierra Code - Ignition On/Start Switch Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2534 2014 GMC Sierra?

Faulty Ignition On/Start Switch
Ignition On/Start Switch harness is open or shorted
Ignition On/Start Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC P2534 2014 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 P2534 2014 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 P2534 2014 GMC Sierra code?

Need more information on how to fix the P2534 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the 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 P2534 2014 GMC Sierra Code

1. What does the OBDII code P2534 mean on a 2014 GMC Sierra?

The P2534 code indicates a low voltage issue in the Ignition On/Start Switch Circuit, which can affect the vehicle's ability to start or run properly.

2. What are common symptoms of the P2534 code in a 2014 GMC Sierra?

Symptoms may include difficulty starting, the engine stalling, a no-start condition, or an illuminated check engine light.

3. What causes the P2534 code to appear in a GMC Sierra?

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

4. Can a weak battery trigger the P2534 code in a 2014 GMC Sierra?

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

5. How do I diagnose the P2534 code on my GMC Sierra?

Start by checking the battery voltage and condition, inspect the ignition switch and its wiring for damage, and test the circuit for proper voltage and continuity.

6. Is it safe to drive a 2014 GMC Sierra with the P2534 code?

Driving with this code is not recommended, as it may lead to engine stalling or failure to start, potentially leaving you stranded.

7. How can I fix the P2534 code on my GMC Sierra?

Repair steps may include replacing the ignition switch, repairing damaged wiring or connectors, charging or replacing the battery, or reprogramming the PCM if needed.

8. How much does it cost to fix the P2534 code on a 2014 GMC Sierra?

Repair costs vary but typically range from $100 to $300, depending on whether the issue is with the ignition switch, wiring, or battery.

9. Can a faulty PCM cause the P2534 code on a GMC Sierra?

While rare, a malfunctioning PCM can cause this code if it fails to properly control the ignition circuit.

10. Do I need special tools to fix the P2534 code on a 2014 GMC Sierra?

Basic tools like a multimeter are often sufficient for diagnosing this code, but a professional OBDII scanner may be needed to clear it after repairs.