AutoCodes – GMC – P182A 2015 GMC Sierra

P182A 2015 GMC Sierra Code - Internal Mode Switch 'A' 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: P182A 2015 GMC Sierra indicates Internal Mode Switch 'A' 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 359

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P182A 2015 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 A signal circuit voltage is less than 0.7 V, for 1.75 s.

OBDII Code P182A 2015 GMC Sierra - Internal Mode Switch 'A' Circuit Low Voltage - AutoCodes.com — P182A 2015 GMC Sierra Code - Internal Mode Switch 'A' Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P182A 2015 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 P182A 2015 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 P182A 2015 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 P182A 2015 GMC Sierra code?

Need more information on how to fix the P182A 2015 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P182A 2015 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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.