P0706 2015 GMC Sierra Code - Transmission Range Switch Performance
Quick Answer
The Transmission Internal Mode Switch (IMS) consists of 5 internal switches, A, B, C, P, and Neutral Start. Common causes include Faulty Transmission Internal Mode Switch (IMS), 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
- P0706 2015 GMC Sierra indicates Transmission Range Switch Performance.
- Common causes
- Common causes include Faulty Transmission Internal Mode Switch (IMS), 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 P0706 2015 GMC Sierra Description
The Engine Control Module (ECM) supplies a signal circuit to the neutral start switch. The ECM uses the state of the neutral start switch state as confirmation that the transmission is in neutral or park before the engine starter is engaged.
The Diagnostic Trouble Code (DTC) will be set when the TCM detects engine cranking when the IMS does not indicate park or neutral for 0.2 s.
What are the Possible Causes of the DTC P0706 2015 GMC Sierra?
- Faulty Transmission Internal Mode Switch (IMS)
- 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 P0706 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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0706 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 P0706 2015 GMC Sierra Code
1. What does the OBDII code P0706 mean on a 2015 GMC Sierra?
P0706 indicates an issue with the Transmission Range Switch, suggesting it is providing an invalid or inconsistent signal to the vehicle’s computer.
2. What are the common symptoms of code P0706 on a 2015 GMC Sierra?
Symptoms may include difficulty shifting gears, the vehicle being stuck in one gear, erratic transmission behavior, a check engine light, or the inability to start the vehicle.
3. What causes the P0706 code to appear on my 2015 GMC Sierra?
Common causes include a faulty transmission range switch, worn or damaged wiring, corroded or loose electrical connections, or issues with the transmission control module (TCM).
4. Can a P0706 code cause transmission damage if ignored?
Yes, ignoring this code can lead to further transmission issues, poor drivability, and potential long-term damage to the transmission system.
5. How is code P0706 diagnosed on a 2015 GMC Sierra?
A technician will typically use a scan tool to verify the code, inspect the transmission range switch and its wiring, and check for proper alignment, continuity, and signal output.
6. Can I still drive my 2015 GMC Sierra with a P0706 code?
Driving with this code is not recommended as it can cause unsafe driving conditions and further damage to the transmission if the issue worsens.
7. How do I fix the P0706 code on my 2015 GMC Sierra?
Repairs may include replacing the transmission range switch, repairing or replacing damaged wiring, cleaning corroded connections, or reprogramming the TCM if necessary.
8. How much does it cost to fix code P0706 on a 2015 GMC Sierra?
The cost can vary but typically ranges from $200 to $500, depending on whether the switch, wiring, or other components need to be replaced.
9. Can a low transmission fluid level cause a P0706 code?
While not a common cause, low or dirty transmission fluid can sometimes contribute to transmission range sensor issues and should be checked as part of the diagnosis.
10. Is the P0706 code specific to the 2015 GMC Sierra?
No, P0706 is a generic OBDII code that can appear on various vehicles, but its specific symptoms and causes may vary depending on the make and model.
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