AutoCodes – GMC – P182C 2014 GMC Sierra

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

Quick Answer

The internal mode switch indicates the Transmission Control Module (TCM) which gear position the vehicle operator has selected. Common causes include Faulty Transmission Internal Mode Switch, Transmission Internal Mode Switch harness is open or shorted, Transmission Internal Mode Switch 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: P182C 2014 GMC Sierra indicates Internal Mode Switch 'B' Circuit High Voltage.
Common causes: Common causes include Faulty Transmission Internal Mode Switch, Transmission Internal Mode Switch harness is open or shorted, Transmission Internal Mode Switch 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 147

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 Mar 23, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P182C 2014 GMC Sierra Description

The internal mode switch indicates the Transmission Control Module (TCM) which gear position the vehicle operator has selected. The internal mode switch consists of 5 separate hall effect switches. Each hall effect switch is supplied with a 9 V reference circuit and a signal circuit from the TCM. Each signal circuit for each gear selector position will have either a voltage reading of 0.70–0.96 V indicating On or 1.68–2.38 V indicating Off. The voltage values on each internal mode switch circuit will change and are dependent on the position of the gear selector. The state of each internal mode switch A/B/C/P/S signal circuit is displayed on the scan tool. The Diagnostic Trouble Code (DTC) will be set when the TCM has detected the internal mode switch B signal circuit voltage is greater than 2.38 V, for 1.75 s.

OBDII Code P182C 2014 GMC Sierra - Internal Mode Switch 'B' Circuit High Voltage - AutoCodes.com — P182C 2014 GMC Sierra Code - Internal Mode Switch 'B' Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P182C 2014 GMC Sierra?

Faulty Transmission Internal Mode Switch
Transmission Internal Mode Switch harness is open or shorted
Transmission Internal Mode Switch circuit poor electrical connection
Faulty Transmission Control Module (TCM)

How to Fix the DTC P182C 2014 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 P182C 2014 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 P182C 2014 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 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.