AutoCodes – GMC – P182B 2014 GMC Sierra

P182B 2014 GMC Sierra Code - Internal Mode Switch 'B' Circuit Low 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: P182B 2014 GMC Sierra indicates Internal Mode Switch 'B' Circuit Low 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 193

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 P182B 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 less than 0.7 V, for 1.75 s.

OBDII Code P182B 2014 GMC Sierra - Internal Mode Switch 'B' Circuit Low Voltage - AutoCodes.com — P182B 2014 GMC Sierra Code - Internal Mode Switch 'B' Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P182B 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 P182B 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 P182B 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 P182B 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 P182B 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code P182B in a 2014 GMC Sierra?

- Common symptoms include issues with shifting gears, hesitation or jerking during acceleration, and the transmission not engaging properly.

2. What does the OBDII code P182B 'Internal Mode Switch 'B' Circuit Low Voltage' mean for a 2014 GMC Sierra?

- This code indicates a low voltage condition in the internal mode switch 'B' circuit, which is part of the transmission control system.

3. What are the possible causes of OBDII code P182B in a 2014 GMC Sierra?

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

4. How can I diagnose the Internal Mode Switch 'B' Circuit Low Voltage issue in my 2014 GMC Sierra?

- Diagnosing this issue typically involves checking the internal mode switch for proper operation, inspecting the wiring and connectors for damage, and testing the voltage in the circuit.

5. Can I continue to drive my 2014 GMC Sierra with OBDII code P182B present?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the transmission and potentially unsafe driving conditions.

6. How can I repair OBDII code P182B in my 2014 GMC Sierra?

- Repair options may include replacing the internal mode switch, repairing damaged wiring or connectors, ensuring proper transmission fluid levels, or reprogramming the transmission control module.

7. Will resetting the OBDII code P182B 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 addressed, it is likely to reappear.

8. Is it safe to ignore OBDII code P182B in my 2014 GMC Sierra?

- Ignoring this code can lead to transmission issues and potential safety hazards while driving, so it is best to address the problem as soon as possible.

9. How much does it typically cost to repair OBDII code P182B in a 2014 GMC Sierra?

- The cost of repairs can vary depending on the specific cause of the issue, but it is recommended to consult a professional mechanic for an accurate diagnosis and cost estimate.

10. Can a DIY enthusiast fix OBDII code P182B in a 2014 GMC Sierra?

- While some basic troubleshooting and repairs may be possible for DIY enthusiasts, diagnosing and repairing issues related to the transmission control system is best left to experienced mechanics with the proper tools and knowledge.