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P182D 2015 GMC Sierra Code - Internal Mode Switch 'P' Circuit High Voltage

Quick Answer

The P182D diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates a problem with the Internal Mode Switch 'P' circuit having high voltage. Common causes include Faulty Internal Mode Switch, Wiring or connector issues in the IMS circuit, Corrosion or damage to the IMS circuit. 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
P182D 2015 GMC Sierra indicates Internal Mode Switch 'P' Circuit High Voltage.
Common causes
Common causes include Faulty Internal Mode Switch, Wiring or connector issues in the IMS circuit, Corrosion or damage to the IMS circuit.
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 12, 2024
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Code P182D 2015 GMC Sierra Description

The P182D diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates a problem with the Internal Mode Switch 'P' circuit having high voltage. The Internal Mode Switch (IMS) is a crucial component of the transmission control system in the vehicle. It is responsible for detecting the gear selector position and relaying this information to the transmission control module (TCM). The 'P' circuit specifically refers to the park position on the gear selector.

OBDII Code P182D 2015 GMC Sierra - Internal Mode Switch 'P' Circuit High Voltage
P182D 2015 GMC Sierra Code - Internal Mode Switch 'P' Circuit High Voltage

Common Causes of P182D 2015 GMC Sierra

  1. Faulty Internal Mode Switch
  2. Wiring or connector issues in the IMS circuit
  3. Corrosion or damage to the IMS circuit
  4. Software or calibration issues with the TCM
  5. Electrical issues within the transmission control system

Symptoms of P182D 2015 GMC Sierra

  1. Harsh shifting between gears
  2. Inability to shift into certain gears
  3. Transmission slipping
  4. Limp mode activation
  5. Check engine light illuminated

How to Fix P182D 2015 GMC Sierra

  1. Diagnose the issue using a scan tool to confirm the P182D DTC and pinpoint the exact cause of the high voltage in the IMS 'P' circuit.
  2. Inspect the wiring and connectors associated with the IMS for any damage or corrosion. Repair or replace as necessary.
  3. Test the Internal Mode Switch functionality and replace if found to be faulty.
  4. Clear the DTC and reset the TCM to ensure the issue has been resolved.
  5. Test drive the vehicle to verify that the transmission is shifting properly and that the IMS 'P' circuit is functioning within the correct voltage range.

Cost to Fix P182D 2015 GMC Sierra

The cost of repairing the Internal Mode Switch 'P' circuit high voltage issue can vary depending on the specific cause of the problem. In general, parts for this repair may range from $50 to $200, with labor costs adding an additional $100 to $300. Overall, the total cost could be anywhere from $150 to $500. However, it is important to note that these estimates are rough averages and actual costs may differ based on factors such as location, vehicle make and model, and labor rates at the auto repair shop. It is advisable to obtain a detailed quote from a qualified mechanic before proceeding with the repair.

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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 P182D 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P182D in a 2015 GMC Sierra?

- Common symptoms may include issues with shifting gears, the transmission not engaging properly, and the Check Engine Light being illuminated.

2. What does the OBDII code P182D 'Internal Mode Switch P Circuit High Voltage' mean for a 2015 GMC Sierra?

- This code indicates that there is a high voltage condition detected in the internal mode switch 'P' circuit of the vehicle's transmission.

3. What are the possible causes of OBDII code P182D in a 2015 GMC Sierra?

- Possible causes may include a faulty internal mode switch, damaged wiring or connectors in the circuit, low transmission fluid levels, or a malfunctioning transmission control module.

4. How can I diagnose the OBDII code P182D in my 2015 GMC Sierra?

- Diagnosing this code typically involves using a scan tool to retrieve the trouble codes, checking the internal mode switch for proper operation, inspecting the wiring and connectors for any damage, and testing the transmission fluid levels.

5. Can I continue driving my 2015 GMC Sierra with OBDII code P182D present?

- It is not recommended to continue driving with this code present, as it can lead to potential transmission issues and further damage if left unresolved.

6. How can I repair OBDII code P182D in my 2015 GMC Sierra?

- Repairing this code may involve replacing the internal mode switch, repairing any damaged wiring or connectors, ensuring proper transmission fluid levels, and resetting the trouble codes with a scan tool.

7. Is it possible to reset the OBDII code P182D in a 2015 GMC Sierra without making any repairs?

- While you can clear the trouble codes with a scan tool, it is important to address the underlying issue causing the code to prevent further problems with the transmission.

8. How much does it typically cost to fix OBDII code P182D in a 2015 GMC Sierra?

- The cost of fixing this code can vary depending on the specific cause, but it may involve parts and labor expenses ranging from $200 to $500 or more, depending on the extent of the repairs needed.

9. Are there any preventive maintenance steps to avoid OBDII code P182D in a 2015 GMC Sierra?

- Regularly checking and maintaining the transmission fluid levels, addressing any transmission issues promptly, and ensuring proper functioning of the internal mode switch can help prevent this code from appearing.

10. Can a DIY enthusiast with basic automotive knowledge repair OBDII code P182D in a 2015 GMC Sierra?

- While some basic troubleshooting steps can be performed by a knowledgeable DIY enthusiast, diagnosing and repairing this code may require specialized tools and expertise, so it is advisable to consult a professional mechanic for accurate diagnosis and repair.

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