P182C 2015 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 2015 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.
Code P182C 2015 GMC Sierra Description
What are the Possible Causes of the DTC P182C 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 P182C 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 P182C 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.
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Frequently Asked Questions about P182C 2015 GMC Sierra Code
1. What does the OBDII code P182C mean on a 2015 GMC Sierra?
P182C indicates an issue with the Internal Mode Switch (IMS) 'B' Circuit, specifically a high voltage condition detected by the transmission control module (TCM).
2. What are the common symptoms of code P182C on a 2015 GMC Sierra?
Common symptoms include erratic shifting, the vehicle being stuck in one gear, reduced power mode activation, and the check engine light being illuminated.
3. What causes the P182C code on a GMC Sierra?
Causes may include a faulty internal mode switch, damaged wiring or connectors in the IMS circuit, a malfunctioning TCM, or corrosion in the electrical connections.
4. How do I diagnose the P182C code on my 2015 GMC Sierra?
Start by checking the wiring and connectors for damage or corrosion, test the internal mode switch for proper function, and use a scan tool to monitor voltage readings on the IMS 'B' circuit.
5. Can I drive my GMC Sierra with the P182C code?
It is not recommended to drive with this code active, as it can lead to transmission issues, poor performance, and potential damage to the drivetrain.
6. How do I fix the P182C code on a 2015 GMC Sierra?
Repairs may include replacing the internal mode switch, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the transmission control module if necessary.
7. Is the P182C code specific to the GMC Sierra?
No, the P182C code can occur in other GM vehicles with similar transmission systems, but the exact diagnosis and repair steps may vary by make and model.
8. How much does it cost to fix the P182C code on a GMC Sierra?
Repair costs can range from $100 to $500 or more, depending on whether the issue is with wiring, the internal mode switch, or the TCM.
9. What tools are needed to troubleshoot the P182C code on a 2015 GMC Sierra?
You'll need a scan tool capable of reading transmission codes, a multimeter to test voltage, and possibly wiring diagrams for the IMS circuit.
10. Can a software update fix the P182C code on my GMC Sierra?
In some cases, a software update for the TCM may resolve the issue, but this is usually only effective if the problem is not hardware-related.
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