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P2536 2017 GMC Sierra Code - Ignition Accessory Switch Circuit

Quick Answer

The P2536 diagnostic trouble code (DTC) in a 2017 GMC Sierra refers to an issue with the ignition accessory switch circuit. Common causes include Faulty ignition accessory switch, Wiring issues or shorts in the ignition accessory switch circuit, Loose or corroded electrical connections. 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
P2536 2017 GMC Sierra indicates Ignition Accessory Switch Circuit.
Common causes
Common causes include Faulty ignition accessory switch, Wiring issues or shorts in the ignition accessory switch circuit, Loose or corroded electrical connections.
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 16, 2024
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Code P2536 2017 GMC Sierra Description

The P2536 diagnostic trouble code (DTC) in a 2017 GMC Sierra refers to an issue with the ignition accessory switch circuit. This code indicates that there is a malfunction in the circuit that controls the ignition accessory switch, which is responsible for powering accessories such as the radio, power windows, and interior lights when the vehicle is in the accessory or on position.

OBDII Code P2536 2017 GMC Sierra - Ignition Accessory Switch Circuit
P2536 2017 GMC Sierra Code - Ignition Accessory Switch Circuit

Common Causes of P2536 2017 GMC Sierra

  1. Faulty ignition accessory switch
  2. Wiring issues or shorts in the ignition accessory switch circuit
  3. Loose or corroded electrical connections
  4. Faulty ignition switch
  5. Issues with the body control module

Symptoms of P2536 2017 GMC Sierra

  1. Accessories not working when the ignition is in the accessory or on position
  2. Interior lights not turning on
  3. Power windows not functioning
  4. Radio not powering on
  5. Dashboard lights flickering or dimming

How to Fix P2536 2017 GMC Sierra

  1. Diagnose the issue by using a scan tool to read the DTC and inspecting the ignition accessory switch circuit for any visible damage or loose connections.
  2. Test the ignition accessory switch to determine if it is functioning correctly.
  3. Check the wiring for any signs of damage, corrosion, or shorts, and repair or replace as needed.
  4. Inspect and clean any electrical connections related to the ignition accessory switch circuit.
  5. If necessary, replace the faulty ignition accessory switch or any other components contributing to the issue.

Cost to Fix P2536 2017 GMC Sierra

The typical repair costs for addressing the P2536 code in a 2017 GMC Sierra can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts for this repair can range from $50 to $200, while labor costs can range from $100 to $300. Overall, the total repair cost for addressing this code may fall between $150 and $500. It is important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the rates of the auto repair shop. It is advisable to consult with a qualified mechanic or repair shop for a more accurate cost estimate.

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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 P2536 2017 GMC Sierra Code

1. What does the OBDII code P2536 indicate on a 2017 GMC Sierra?

The P2536 code signals an issue with the Ignition Accessory Switch Circuit, indicating that the powertrain control module (PCM) has detected a fault or abnormal voltage reading within the circuit.

2. What are the common symptoms of code P2536 in a 2017 GMC Sierra?

Symptoms may include difficulty starting the engine, the engine stalling when accessories are used, accessories not functioning when the ignition is in the "Accessory" position, and possibly the illumination of the check engine light.

3. What can cause the P2536 code to appear in a 2017 GMC Sierra?

Causes might include faulty or damaged wiring in the ignition accessory switch circuit, a defective ignition switch, issues with the PCM, or a poor electrical connection in the ignition accessory switch circuit.

4. How can I diagnose the P2536 code in my 2017 GMC Sierra?

Diagnosis should start with a visual inspection of the wiring and connectors in the ignition accessory switch circuit. Use a multimeter to check for proper voltage and continuity. If wiring appears intact, further testing of the ignition switch and PCM may be necessary.

5. What are the steps to repair or resolve the P2536 code on a 2017 GMC Sierra?

Repair steps typically involve first repairing or replacing any damaged wiring or connectors found during the diagnostic process. If the ignition switch is found to be faulty, replacing it would be the next step. If all else fails, a PCM check or replacement might be required.

6. Is it safe to drive a 2017 GMC Sierra with the P2536 code?

While you may be able to drive with this code, it is advisable to address the issue promptly as it can affect the functionality of vehicle accessories and potentially the overall drivability of the vehicle.

7. Could a faulty battery or alternator trigger the P2536 code in a 2017 GMC Sierra?

While a faulty battery or alternator can cause various electrical issues, they are unlikely to specifically trigger the P2536 code unless they lead to significant voltage irregularities affecting the ignition accessory switch circuit.

8. Will resetting the PCM clear the P2536 code on a 2017 GMC Sierra?

Resetting the PCM might temporarily clear the code, but unless the underlying issue is resolved, the code is likely to return. It's important to address the root cause of the code for a permanent solution.

9. How urgent is it to fix a P2536 code on a 2017 GMC Sierra?

It is moderately urgent to fix this issue, especially if it affects the vehicle's ability to start or causes it to stall, as these can compromise safety and the overall functionality of your vehicle.

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