P182A 2017 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 2017 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.
Code P182A 2017 GMC Sierra Description
What are the Possible Causes of the DTC P182A 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 P182A 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 P182A 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 P182A 2017 GMC Sierra Code
1. What does the OBDII code P182A mean on a 2017 GMC Sierra?
P182A indicates a low voltage issue in the Internal Mode Switch 'A' circuit, which is part of the transmission range sensor system responsible for monitoring gear selection.
2. What are the common symptoms of code P182A in a GMC Sierra?
Symptoms may include the transmission not shifting correctly, the vehicle being stuck in one gear, a check engine light, or erratic gear indicator behavior.
3. What causes the P182A code to appear on a 2017 GMC Sierra?
Common causes include a faulty internal mode switch, damaged wiring or connectors in the circuit, corrosion, or a failing transmission control module (TCM).
4. Can driving with the P182A code cause further damage to my 2017 GMC Sierra?
Yes, continuing to drive with this code can lead to transmission damage or unsafe driving conditions due to improper gear selection.
5. How can I diagnose the P182A code on my GMC Sierra?
Begin by checking the wiring and connectors for damage or corrosion. Use a multimeter to test circuit voltage and inspect the internal mode switch for proper function.
6. How do I fix the P182A code on a 2017 GMC Sierra?
Repairs may involve replacing the internal mode switch, repairing or replacing damaged wiring, cleaning corroded connections, or reprogramming the transmission control module if necessary.
7. What tools are required to troubleshoot the P182A code?
You’ll need an OBDII scanner, a multimeter, and basic tools to inspect and repair wiring or replace components in the circuit.
8. Is the P182A code specific to GMC Sierra trucks?
No, P182A can appear on other GM vehicles, but the exact symptoms and solutions may vary depending on the make and model.
9. How much does it cost to repair the P182A code on a GMC Sierra?
The cost can range from $100 to $400, depending on whether the issue is a simple wiring repair or requires replacing the internal mode switch.
10. Can a software update fix the P182A code on a 2017 GMC Sierra?
In some cases, reprogramming the transmission control module (TCM) with updated software can resolve the issue if it is related to a software glitch.
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