AutoCodes – GMC – P2536 2017 GMC Sierra

P2536 2017 GMC Sierra Code - Ignition Accessory Switch Circuit

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: P2536 2017 GMC Sierra indicates Ignition Accessory Switch Circuit.
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 235

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 P2536 2017 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 P2536 2017 GMC Sierra - Ignition Accessory Switch Circuit - AutoCodes.com — P2536 2017 GMC Sierra Code - Ignition Accessory Switch Circuit

What does this mean?

What are the Possible Causes of the DTC P2536 2017 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 P2536 2017 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 P2536 2017 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 P2536 2017 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 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.