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Engine-Codes – GMC – P182D 2016 GMC Sierra

P182D 2016 GMC Sierra Code - Internal Mode Switch 'P' Circuit High Voltage

Quick Answer

The diagnostic trouble code P182D in a 2016 GMC Sierra indicates an issue with the Internal Mode Switch 'P' Circuit High Voltage. Common causes include Faulty Internal Mode Switch, Damaged wiring or connectors in the circuit, Malfunctioning Transmission Control Module. 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 2016 GMC Sierra indicates Internal Mode Switch 'P' Circuit High Voltage.
Common causes
Common causes include Faulty Internal Mode Switch, Damaged wiring or connectors in the circuit, Malfunctioning Transmission Control Module.
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 13, 2024
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Code P182D 2016 GMC Sierra Description

The diagnostic trouble code P182D in a 2016 GMC Sierra indicates an issue with the Internal Mode Switch 'P' Circuit High Voltage. This code is related to the transmission control system of the vehicle. The Internal Mode Switch (IMS) is a component that communicates the gear selector position to the transmission control module (TCM). When the TCM detects a high voltage in the circuit associated with the IMS 'P' position, it triggers this code.

OBDII Code P182D 2016 GMC Sierra - Internal Mode Switch 'P' Circuit High Voltage
P182D 2016 GMC Sierra Code - Internal Mode Switch 'P' Circuit High Voltage

Common Causes of P182D 2016 GMC Sierra

  1. Faulty Internal Mode Switch
  2. Damaged wiring or connectors in the circuit
  3. Malfunctioning Transmission Control Module
  4. Corrosion in the electrical connections
  5. Water intrusion in the transmission system

Symptoms of P182D 2016 GMC Sierra

  1. Erratic shifting behavior
  2. Harsh gear engagement
  3. Transmission slippage
  4. Check Engine Light illuminated
  5. Reduced fuel efficiency

How to Fix P182D 2016 GMC Sierra

  1. Diagnose the code using a scan tool to 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 for proper operation and replace if found to be faulty.
  4. Clear the trouble code from the TCM memory and perform a test drive to ensure the issue has been resolved.
  5. If the problem persists, further diagnostics may be required to identify any underlying issues with the transmission control system.

Cost to Fix P182D 2016 GMC Sierra

The typical repair costs for addressing the Internal Mode Switch 'P' Circuit High Voltage issue in a 2016 GMC Sierra can range from $200 to $500, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It's advisable to obtain quotes from local auto repair shops for a more accurate 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 P182D 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code P182D in a 2016 GMC Sierra?

The common symptoms of OBDII code P182D (Internal Mode Switch 'P' Circuit High Voltage) in a 2016 GMC Sierra may include issues with gear shifting, transmission performance issues, and the Check Engine light illuminated on the dashboard.

2. What are the possible causes of OBDII code P182D in a 2016 GMC Sierra?

Possible causes of OBDII code P182D in a 2016 GMC Sierra include a faulty internal mode switch, damaged wiring or connectors in the circuit, or a malfunctioning transmission control module.

3. How can I diagnose OBDII code P182D in my 2016 GMC Sierra?

Diagnosing OBDII code P182D in a 2016 GMC Sierra typically involves using a diagnostic scanner to retrieve the trouble codes, inspecting the internal mode switch and its circuit for any visible damage, and testing the transmission control module for proper functioning.

4. Can I continue driving my 2016 GMC Sierra with OBDII code P182D?

It is not recommended to continue driving your 2016 GMC Sierra with OBDII code P182D, as this issue can affect the performance and reliability of your vehicle's transmission. It is advisable to address the problem promptly to prevent further damage.

5. How can OBDII code P182D in a 2016 GMC Sierra be repaired?

Repairing OBDII code P182D in a 2016 GMC Sierra often involves replacing the internal mode switch, repairing any damaged wiring or connectors in the circuit, or reprogramming the transmission control module. It is recommended to consult a professional mechanic for accurate diagnosis and repair.

6. Is OBDII code P182D a serious issue in a 2016 GMC Sierra?

OBDII code P182D (Internal Mode Switch 'P' Circuit High Voltage) in a 2016 GMC Sierra should be addressed promptly to prevent potential transmission problems and ensure the overall health of the vehicle. Ignoring this issue can lead to further complications and costly repairs.

7. Can a DIY enthusiast fix OBDII code P182D in a 2016 GMC Sierra?

While some aspects of diagnosing and repairing OBDII code P182D in a 2016 GMC Sierra can be done by a DIY enthusiast, it is recommended to seek assistance from a professional mechanic for accurate diagnosis and proper repair to ensure the issue is resolved effectively.

8. How much does it typically cost to repair OBDII code P182D in a 2016 GMC Sierra?

The cost of repairing OBDII code P182D in a 2016 GMC Sierra can vary depending on the specific cause of the issue, the labor rates of the repair shop, and the cost of any parts that need replacement. It is advisable to obtain quotes from multiple mechanics for an accurate estimate.

9. Will resetting the Check Engine light resolve OBDII code P182D in a 2016 GMC Sierra?

Simply resetting the Check Engine light will not resolve OBDII code P182D in a 2016 GMC Sierra. The underlying issue causing the code needs to be diagnosed and repaired to ensure the problem is fixed and the Check Engine light does not come back on.

10. How can I prevent OBDII code P182D from recurring in my 2016 GMC Sierra?

To prevent OBDII code P182D from recurring in your 2016 GMC Sierra, it is essential to perform regular maintenance on your vehicle, address any transmission-related issues promptly, and ensure the internal mode switch and its circuit are in good condition. Regularly servicing your vehicle can help prevent such issues from arising.

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