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P0706 2017 GMC Sierra Code - Transmission Range Switch Performance

Quick Answer

The P0706 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates an issue with the Transmission Range Switch (TRS) performance. Common causes include Faulty Transmission Range Switch, Wiring issues or electrical connections, Misaligned or damaged TRS sensor. 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 2017 GMC Sierra indicates Transmission Range Switch Performance.
Common causes
Common causes include Faulty Transmission Range Switch, Wiring issues or electrical connections, Misaligned or damaged TRS sensor.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P0706 2017 GMC Sierra Description

The P0706 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates an issue with the Transmission Range Switch (TRS) performance. The TRS, also known as the Neutral Safety Switch or Range Sensor, is a critical component of the vehicle's transmission system. It is responsible for informing the engine control module (ECM) about the gear position selected by the driver, such as Park, Reverse, Neutral, Drive, etc. When the TRS malfunctions or fails to provide accurate data to the ECM, it can lead to various performance issues and potentially compromise the safety and drivability of the vehicle.

OBDII Code P0706 2017 GMC Sierra - Transmission Range Switch Performance
P0706 2017 GMC Sierra Code - Transmission Range Switch Performance

Common Causes of P0706 2017 GMC Sierra

  1. Faulty Transmission Range Switch
  2. Wiring issues or electrical connections
  3. Misaligned or damaged TRS sensor
  4. Corrosion in the TRS circuit
  5. ECM communication error

Symptoms of P0706 2017 GMC Sierra

  1. Check Engine Light illuminated on the dashboard
  2. Erratic shifting behavior
  3. Transmission slippage
  4. Difficulty starting the vehicle
  5. Inability to start the engine

How to Fix P0706 2017 GMC Sierra

  1. Begin by conducting a thorough diagnosis using a scan tool to retrieve the specific trouble code and identify the root cause of the issue.
  2. Inspect the TRS sensor and its wiring for any visible damage, corrosion, or misalignment. Clean the connections if necessary.
  3. Test the TRS sensor's functionality using a multimeter to ensure it is sending accurate signals to the ECM.
  4. Replace the TRS sensor if it is found to be faulty or malfunctioning. Ensure proper installation and alignment of the new sensor.
  5. Clear the DTC and test drive the vehicle to confirm that the issue has been resolved and that the transmission is operating correctly.

Cost to Fix P0706 2017 GMC Sierra

The typical repair costs for addressing a P0706 code related to Transmission Range Switch performance can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. On average, the parts cost for a new TRS sensor ranges from $50 to $150, while the labor cost can range from $100 to $300. Overall, the total repair cost for this issue may fall between $150 and $450. It is important to note that these estimates are approximate and actual costs may differ based on the location, vehicle make and model, and the repair shop's rates. It is recommended to obtain quotes from multiple shops to compare prices and ensure a fair deal.

What does this mean?

Tech Notes for P0706 2017 GMC Sierra

The Internal Mode Switch (IMS) is mounted to the manual shift shaft detent lever as an assembly. The components of the detent lever/IMS assembly cannot be individually serviced. When the IMS needs replacing, the entire assembly must be replaced.

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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 P0706 2017 GMC Sierra Code

1. What does the OBDII code P0706 mean on a 2017 GMC Sierra?

P0706 indicates an issue with the Transmission Range Sensor (TRS), which monitors the position of the gear selector. The code suggests a performance problem or an incorrect signal from the sensor.

2. What are common symptoms of code P0706 in a 2017 GMC Sierra?

Symptoms may include the check engine light turning on, difficulty shifting gears, improper gear indication on the dashboard, or the vehicle going into "limp mode."

3. What causes code P0706 in a 2017 GMC Sierra?

Common causes include a faulty transmission range sensor, damaged wiring or connectors, corrosion in the sensor circuit, or misaligned gear linkage.

4. Can I drive my 2017 GMC Sierra with a P0706 code?

It is not recommended to drive with this code for extended periods, as it can lead to gear shifting issues, reduced performance, or potential damage to the transmission.

5. How is code P0706 diagnosed on a 2017 GMC Sierra?

A technician will use a scan tool to confirm the code, inspect the transmission range sensor and related wiring, and verify the alignment of the gear selector linkage.

6. How do you fix the P0706 code on a 2017 GMC Sierra?

Repair options include replacing a faulty transmission range sensor, repairing or replacing damaged wiring, cleaning corroded connections, or adjusting the gear selector linkage.

7. How much does it cost to repair code P0706 on a 2017 GMC Sierra?

Repair costs can range from $150 to $400, depending on whether the issue is related to the sensor, wiring, or linkage adjustment.

8. Can a dirty or low transmission fluid level trigger code P0706?

While not a direct cause, dirty or low transmission fluid can contribute to poor transmission performance, potentially leading to related issues. Checking and maintaining proper fluid levels is important.

9. Is code P0706 related to other transmission codes on a 2017 GMC Sierra?

Yes, P0706 can sometimes appear alongside other transmission-related codes, such as P0705 or P0707, which also indicate problems with the transmission range sensor circuit.

10. Can I reset code P0706 without fixing the problem on my 2017 GMC Sierra?

While you can clear the code with a scan tool, it will likely return if the underlying issue is not addressed. Proper diagnosis and repair are necessary to resolve the problem permanently.

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