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Engine-Codes – GMC – P182B 2015 GMC Sierra

P182B 2015 GMC Sierra Code - Internal Mode Switch 'B' Circuit Low Voltage

Quick Answer

The P182B diagnostic trouble code (DTC) for a 2015 GMC Sierra refers to the Internal Mode Switch 'B' Circuit Low Voltage. Common causes include Faulty internal mode switch, Damaged wiring or connectors, Malfunctioning 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
P182B 2015 GMC Sierra indicates Internal Mode Switch 'B' Circuit Low Voltage.
Common causes
Common causes include Faulty internal mode switch, Damaged wiring or connectors, Malfunctioning 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 27, 2024
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Code P182B 2015 GMC Sierra Description

The P182B diagnostic trouble code (DTC) for a 2015 GMC Sierra refers to the Internal Mode Switch 'B' Circuit Low Voltage. This code indicates a problem with the internal mode switch, which is responsible for communicating the gear position to the transmission control module (TCM). The internal mode switch is a critical component that helps the TCM determine the current gear selection and make necessary adjustments for optimal performance and efficiency.

OBDII Code P182B 2015 GMC Sierra - Internal Mode Switch 'B' Circuit Low Voltage
P182B 2015 GMC Sierra Code - Internal Mode Switch 'B' Circuit Low Voltage

Common Causes of P182B 2015 GMC Sierra

  1. Faulty internal mode switch
  2. Damaged wiring or connectors
  3. Malfunctioning TCM
  4. Corrosion or debris affecting electrical connections
  5. Electrical system issues

Symptoms of P182B 2015 GMC Sierra

  1. Erratic shifting behavior
  2. Delayed engagement when shifting gears
  3. Inaccurate gear display on the dashboard
  4. Transmission slipping
  5. Illumination of the Check Engine Light

How to Fix P182B 2015 GMC Sierra

  1. Begin by conducting a thorough diagnostic scan to confirm the P182B code and pinpoint the exact cause of the issue.
  2. Inspect the internal mode switch and its wiring for any signs of damage or corrosion. Replace the switch if necessary.
  3. Check the TCM for proper functionality and address any faults or malfunctions.
  4. Clear the DTC and reset the TCM to ensure proper communication with the internal mode switch.
  5. Test drive the vehicle to verify that the issue has been resolved and that the transmission is operating smoothly.

Cost to Fix P182B 2015 GMC Sierra

The typical repair costs for addressing the Internal Mode Switch 'B' Circuit Low Voltage issue can range from $200 to $500, depending on the extent of the repairs needed and the cost of parts. It's important to note that labor rates at auto repair shops can vary, with hourly rates typically falling between $80 and $150. Factors such as location, vehicle make and model, and engine type can also impact the overall cost of the repair. For a more accurate estimate, it is recommended to consult with a local auto repair shop.

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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 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P182B in a 2015 GMC Sierra?

The common symptoms of OBDII code P182B in a 2015 GMC Sierra include issues with shifting gears, hesitation or jerking during acceleration, and illuminated warning lights on the dashboard.

2. What does the Internal Mode Switch 'B' Circuit Low Voltage mean in the context of this OBDII code?

The Internal Mode Switch 'B' Circuit Low Voltage indicates a potential problem with the internal mode switch within the transmission, specifically related to low voltage being detected.

3. What are the possible causes of the Internal Mode Switch 'B' Circuit Low Voltage OBDII code in a 2015 GMC Sierra?

Possible causes of OBDII code P182B in a 2015 GMC Sierra include a faulty internal mode switch, damaged wiring or connectors, low transmission fluid levels, or a malfunctioning transmission control module.

4. How can I diagnose the Internal Mode Switch 'B' Circuit Low Voltage issue in my 2015 GMC Sierra?

Diagnosing the P182B code may involve conducting a visual inspection of wiring and connectors, checking transmission fluid levels, testing the internal mode switch, and using a scan tool to retrieve additional diagnostic trouble codes.

5. Can I continue driving my 2015 GMC Sierra with the P182B OBDII code present?

It is not recommended to continue driving your GMC Sierra with the P182B OBDII code present, as it can lead to further transmission issues and potential safety hazards. It is advisable to address the problem promptly.

6. How can I repair the Internal Mode Switch 'B' Circuit Low Voltage issue in my 2015 GMC Sierra?

Repairing the P182B code may involve replacing the internal mode switch, repairing or replacing damaged wiring or connectors, ensuring proper transmission fluid levels, and resetting the transmission control module.

7. Is it necessary to visit a mechanic to fix the P182B OBDII code in my 2015 GMC Sierra?

While some DIY enthusiasts may attempt to diagnose and repair the P182B code, it is recommended to seek professional help from a qualified mechanic to ensure accurate diagnosis and proper repair of the transmission issue.

8. How much does it typically cost to fix the Internal Mode Switch 'B' Circuit Low Voltage problem in a 2015 GMC Sierra?

The cost of repairing the P182B code in a 2015 GMC Sierra can vary depending on the root cause of the issue, the required parts, and labor costs. It is advisable to obtain quotes from different mechanics for an accurate estimate.

9. Can a low battery voltage cause the Internal Mode Switch 'B' Circuit Low Voltage error code in a 2015 GMC Sierra?

Yes, a low battery voltage can potentially contribute to triggering the P182B code in a 2015 GMC Sierra. Ensuring that the vehicle's battery is in good condition and properly charged is important to prevent voltage-related issues.

10. How long does it take to fix the Internal Mode Switch 'B' Circuit Low Voltage issue in a 2015 GMC Sierra?

The time taken to fix the P182B code in a 2015 GMC Sierra can vary depending on the complexity of the problem, availability of parts, and the mechanic's expertise. It is recommended to consult with your mechanic for a projected timeline.

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