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Engine-Codes – GMC – P182C 2014 GMC Sierra

P182C 2014 GMC Sierra Code - Internal Mode Switch 'B' Circuit High Voltage

Quick Answer

The P182C diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates an issue with the Internal Mode Switch 'B' Circuit High Voltage. Common causes include Faulty Internal Mode Switch, Wiring issues or shorts in the IMS circuit, Malfunctioning Transmission Control Module (TCM). 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
P182C 2014 GMC Sierra indicates Internal Mode Switch 'B' Circuit High Voltage.
Common causes
Common causes include Faulty Internal Mode Switch, Wiring issues or shorts in the IMS circuit, Malfunctioning Transmission Control Module (TCM).
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 P182C 2014 GMC Sierra Description

The P182C diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates an issue with the Internal Mode Switch 'B' Circuit High Voltage. The Internal Mode Switch (IMS) is a component of the transmission system that helps the vehicle's onboard computer determine the current gear selection. In this case, the 'B' circuit refers to a specific part of the IMS that is experiencing high voltage, which can disrupt the proper functioning of the transmission system.

OBDII Code P182C 2014 GMC Sierra - Internal Mode Switch 'B' Circuit High Voltage
P182C 2014 GMC Sierra Code - Internal Mode Switch 'B' Circuit High Voltage

Common Causes of P182C 2014 GMC Sierra

  1. Faulty Internal Mode Switch
  2. Wiring issues or shorts in the IMS circuit
  3. Malfunctioning Transmission Control Module (TCM)
  4. Electrical system problems
  5. Corrosion or damage to IMS connectors

Symptoms of P182C 2014 GMC Sierra

  1. Erratic shifting behavior
  2. Incorrect gear selection
  3. Transmission slipping
  4. Illumination of the check engine light
  5. Reduced fuel efficiency

How to Fix P182C 2014 GMC Sierra

  1. Begin by conducting a thorough inspection of the Internal Mode Switch and its circuitry to identify any visible damage or faults.
  2. Test the voltage levels in the IMS 'B' circuit to confirm the high voltage issue and pinpoint the exact source of the problem.
  3. Replace the Internal Mode Switch if it is found to be faulty, ensuring proper installation and connection to the transmission system.
  4. Check and repair any damaged wiring or connectors in the IMS circuit to prevent future electrical issues.
  5. Clear the DTC codes from the vehicle's computer system and test drive the vehicle to ensure proper transmission operation.

Cost to Fix P182C 2014 GMC Sierra

The typical repair costs for addressing the Internal Mode Switch 'B' Circuit High Voltage issue in a 2014 GMC Sierra can range from $200 to $500, depending on the extent of the repairs needed. This estimate includes the cost of parts, such as a new Internal Mode Switch, as well as labor charges for diagnosis and repair. It's important to note that actual repair costs may vary based on the specific diagnosis time and labor rates at auto repair shops, which can range from $80 to $150 per hour. Factors such as location, vehicle make and model, and engine type can also influence the final repair bill. It's advisable to consult with a trusted mechanic or repair shop for a more accurate cost estimate tailored to your specific situation.

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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 P182C 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code P182C in a 2014 GMC Sierra?

- Common symptoms include issues with shifting gears, hesitation or jerking when accelerating, and the vehicle not starting.

2. What does the OBDII code P182C 'Internal Mode Switch B Circuit High Voltage' mean for a 2014 GMC Sierra?

- This code indicates a problem with the internal mode switch B circuit in the transmission, specifically that the voltage is too high.

3. What are the possible causes of OBDII code P182C in a 2014 GMC Sierra?

- Potential causes 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 P182C in my 2014 GMC Sierra?

- Diagnosis typically involves using a scan tool to read the code, checking the internal mode switch for proper operation, inspecting wiring and connectors for damage, and testing the transmission fluid level.

5. Can I continue driving my 2014 GMC Sierra with OBDII code P182C present?

- It is not recommended to continue driving with this code present, as it can cause further damage to the transmission and may lead to more serious issues.

6. Is it possible to repair OBDII code P182C in a 2014 GMC Sierra myself?

- While some DIY enthusiasts may attempt to address this code by checking wiring and connectors, it is recommended to seek professional help for accurate diagnosis and proper repair.

7. How much does it typically cost to repair OBDII code P182C in a 2014 GMC Sierra?

- The cost of repair can vary depending on the exact cause of the code, but it may range from a few hundred to a couple of thousand dollars, including parts and labor.

8. Can resetting the OBDII code P182C in my 2014 GMC Sierra make it go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the code is not fixed, it is likely to reappear after some driving cycles.

9. Will OBDII code P182C affect the overall performance of my 2014 GMC Sierra?

- Yes, this code can impact the transmission's performance and overall drivability of the vehicle, so it is important to address it promptly.

10. How long does it take to repair OBDII code P182C in a 2014 GMC Sierra?

- The repair time can vary depending on the exact cause of the code and the availability of parts, but it typically takes a few hours to a day for a professional mechanic to diagnose and fix the issue.

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