P182C 2017 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 2017 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 2017 GMC Sierra Description
What are the Possible Causes of the DTC P182C 2017 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 2017 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 2017 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 2017 GMC Sierra Code
1. What does the OBDII code P182C mean on a 2017 GMC Sierra?
P182C indicates a high voltage issue in the Internal Mode Switch 'B' circuit, which is part of the transmission range sensor system.
2. What are the common symptoms of the P182C code?
Symptoms may include the transmission stuck in one gear, erratic shifting, a check engine light, or the inability to move the vehicle.
3. What causes the P182C code to appear?
Possible causes include a faulty internal mode switch, damaged wiring or connectors in the circuit, or a malfunctioning transmission control module (TCM).
4. Can I drive my 2017 GMC Sierra with the P182C code?
Driving with this code is not recommended as it can cause transmission performance issues and may lead to further damage.
5. How is the P182C code diagnosed?
A mechanic will use a scan tool to monitor the transmission range sensor data, inspect wiring and connectors, and test the internal mode switch for proper operation.
6. What repairs are typically needed for a P182C code?
Repairs may include replacing the internal mode switch, repairing or replacing damaged wiring, or reprogramming or replacing the TCM if necessary.
7. How much does it cost to fix the P182C code?
Repair costs vary but may range from $150 to $700 depending on the extent of the issue and labor costs.
8. Can a weak battery cause the P182C code?
While unlikely, low voltage from the battery or charging system issues can sometimes affect electrical circuits and should be ruled out.
9. How do I prevent the P182C code from recurring?
Regularly inspect and maintain the transmission wiring and connectors, and address any shifting issues promptly to prevent electrical failures.
10. Does the P182C code require a software update?
In some cases, a TCM software update may be necessary after repairs to ensure proper operation of the transmission system.
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