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P182A 2015 GMC Sierra Code - Internal Mode Switch 'A' Circuit Low Voltage

Quick Answer

The P182A diagnostic trouble code (DTC) for a 2015 GMC Sierra refers to an issue with the Internal Mode Switch 'A' Circuit Low Voltage. Common causes include Faulty Internal Mode Switch, Wiring or connector issues in the IMS circuit, ECM malfunction. 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
P182A 2015 GMC Sierra indicates Internal Mode Switch 'A' Circuit Low Voltage.
Common causes
Common causes include Faulty Internal Mode Switch, Wiring or connector issues in the IMS circuit, ECM malfunction.
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 17, 2024
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Code P182A 2015 GMC Sierra Description

The P182A diagnostic trouble code (DTC) for a 2015 GMC Sierra refers to an issue with the Internal Mode Switch 'A' Circuit Low Voltage. The Internal Mode Switch (IMS) is a component within the transmission that communicates gear selection information to the vehicle's engine control module (ECM). In this case, the low voltage detected in the circuit indicates a potential problem with the IMS, which can lead to various issues with the vehicle's performance.

OBDII Code P182A 2015 GMC Sierra - Internal Mode Switch 'A' Circuit Low Voltage
P182A 2015 GMC Sierra Code - Internal Mode Switch 'A' Circuit Low Voltage

Common Causes of P182A 2015 GMC Sierra

  1. Faulty Internal Mode Switch
  2. Wiring or connector issues in the IMS circuit
  3. ECM malfunction
  4. Low battery voltage affecting the circuit
  5. Corrosion or damage to the IMS components

Symptoms of P182A 2015 GMC Sierra

  1. Erratic shifting patterns
  2. Hesitation during acceleration
  3. Transmission slipping
  4. Warning light on the dashboard

How to Fix P182A 2015 GMC Sierra

  1. Begin by conducting a thorough inspection of the IMS and its circuitry to identify any visible signs of damage or wear.
  2. Test the voltage output of the IMS to determine if it is within the specified range. If the voltage is low, consider replacing the IMS.
  3. Check the wiring and connectors associated with the IMS circuit for any corrosion, loose connections, or damage. Repair or replace as necessary.
  4. Clear the DTC from the vehicle's ECM using a diagnostic scanner and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, consult a professional mechanic or dealership for further diagnosis and repair.

Cost to Fix P182A 2015 GMC Sierra

The typical repair costs for addressing the Internal Mode Switch 'A' Circuit Low Voltage issue can vary depending on the extent of the problem and the specific components that need to be replaced. In general, replacing the IMS or repairing the circuitry can range from $200 to $500, including parts and labor. However, it is essential to note that diagnosis time and labor rates at auto repair shops can fluctuate based on various factors, so it is advisable to inquire locally 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 P182A 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P182A in a 2015 GMC Sierra?

The common symptoms of OBDII code P182A, Internal Mode Switch 'A' Circuit Low Voltage, in a 2015 GMC Sierra may include erratic shifting, trouble selecting gears, or the transmission not responding properly.

2. What can cause the Internal Mode Switch 'A' Circuit Low Voltage code on a 2015 GMC Sierra?

Possible causes of OBDII code P182A in a 2015 GMC Sierra include a faulty internal mode switch, damaged wiring or connectors related to the switch, or a malfunction within the transmission control module.

3. How serious is the Internal Mode Switch 'A' Circuit Low Voltage fault in a 2015 GMC Sierra?

While the vehicle may still be operable with this fault, it is recommended to address the issue promptly to prevent further damage to the transmission or other related components in the long run.

4. Can I drive my 2015 GMC Sierra with OBDII code P182A?

It is not advisable to drive the vehicle extensively with OBDII code P182A present, as it can lead to transmission issues and potential safety hazards. It's best to have the problem diagnosed and repaired as soon as possible.

5. How can I diagnose and repair OBDII code P182A in my 2015 GMC Sierra?

Diagnosing and repairing OBDII code P182A typically involves scanning the vehicle with a diagnostic tool to confirm the code, inspecting the internal mode switch and related wiring for damage, and replacing any faulty components as needed.

6. Is it possible to reset the OBDII code P182A in a 2015 GMC Sierra?

While you can clear the fault code temporarily with a scan tool, it is crucial to address the underlying issue causing the code to prevent it from reoccurring. Simply clearing the code without fixing the problem may lead to further complications.

7. How much does it cost to fix the Internal Mode Switch 'A' Circuit Low Voltage fault in a 2015 GMC Sierra?

The cost of repairing OBDII code P182A can vary depending on the cause of the issue, the labor rates of the repair shop, and the cost of any replacement parts needed. It's recommended to get a diagnostic and repair quote from a qualified mechanic.

8. Can a DIY enthusiast fix the Internal Mode Switch 'A' Circuit Low Voltage fault in a 2015 GMC Sierra?

While some DIY enthusiasts may have the skills to diagnose and repair this issue, dealing with transmission-related problems can be complex. It's generally advisable to seek help from a professional mechanic with experience in handling transmission faults.

9. Will OBDII code P182A cause my 2015 GMC Sierra to fail an emissions test?

If the Check Engine Light is on due to OBDII code P182A, your vehicle may fail an emissions test depending on the regulations in your area. It's best to address the fault and have the vehicle properly repaired before undergoing an emissions test.

10. How long does it typically take to repair OBDII code P182A in a 2015 GMC Sierra?

The repair time for OBDII code P182A can vary based on the specific cause of the issue and the availability of parts. In general, the repair process can take a few hours to a full day, depending on the complexity of the repair needed.

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