P0708 2017 GMC Sierra Code - Transmission Range Switch Circuit High Voltage
Quick Answer
The P0708 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a Transmission Range Switch Circuit High Voltage. Common causes include Faulty transmission range sensor, Damaged or corroded wiring in the transmission range switch circuit, A loose or poor connection between the sensor and the vehicle's computer. 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
- P0708 2017 GMC Sierra indicates Transmission Range Switch Circuit High Voltage.
- Common causes
- Common causes include Faulty transmission range sensor, Damaged or corroded wiring in the transmission range switch circuit, A loose or poor connection between the sensor and the vehicle's computer.
- 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.
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Code P0708 2017 GMC Sierra Description
The P0708 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates a Transmission Range Switch Circuit High Voltage. This code is specifically related to the transmission range sensor, also known as the neutral safety switch or transmission range switch. This sensor is responsible for detecting the position of the gear shift lever and communicating this information to the vehicle's computer system. When the sensor detects a high voltage in the circuit, it triggers the P0708 code.
Common Causes of P0708 2017 GMC Sierra
- Faulty transmission range sensor.
- Damaged or corroded wiring in the transmission range switch circuit.
- A loose or poor connection between the sensor and the vehicle's computer.
- Issues with the vehicle's computer system or software programming.
Symptoms of P0708 2017 GMC Sierra
- Difficulty shifting gears or the inability to shift at all.
- Incorrect gear readings on the dashboard display.
- Engine stalling when shifting gears.
- Vehicle starting in a gear other than Park or Neutral.
- The transmission slipping or jerking during gear changes.
How to Fix P0708 2017 GMC Sierra
- Start by performing a thorough diagnostic scan to confirm the P0708 code and pinpoint the exact cause of the issue.
- Inspect the wiring and connections in the transmission range switch circuit for any damage or corrosion. Repair or replace any damaged components as needed.
- Test the transmission range sensor to determine if it is functioning correctly. Replace the sensor if it is found to be faulty.
- Clear the DTC from the vehicle's computer system and test drive the vehicle to ensure that the issue has been resolved.
- If the problem persists after the repair, consider seeking assistance from a professional mechanic or transmission specialist for further diagnosis and repair.
Cost to Fix P0708 2017 GMC Sierra
The typical repair costs for addressing a P0708 code on a 2017 GMC Sierra can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of replacing a transmission range sensor ranges from $100 to $300, including parts and labor. However, additional costs may apply if wiring repairs or computer system diagnostics are required. It is recommended to consult with a local auto repair shop for a more accurate estimate based on the specific circumstances of your vehicle. Keep in mind that labor rates can vary between different locations and types of repair facilities.
Tech Notes for P0708 2017 GMC Sierra
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Frequently Asked Questions about P0708 2017 GMC Sierra Code
1. What are the common symptoms of OBDII code P0708 in a 2017 GMC Sierra?
- Common symptoms include issues shifting gears, incorrect gear indication on the dashboard, and the vehicle not starting.
2. What does the OBDII code P0708 mean for a 2017 GMC Sierra?
- OBDII code P0708 indicates a problem with the Transmission Range Switch Circuit High Voltage in the vehicle's transmission system.
3. What are the possible causes of OBDII code P0708 in a 2017 GMC Sierra?
- Possible causes include a faulty transmission range switch, damaged wiring or connectors, low transmission fluid levels, or a malfunctioning PCM.
4. How can I diagnose the OBDII code P0708 in my 2017 GMC Sierra?
- Diagnosis involves using a scan tool to retrieve the trouble code, inspecting the transmission range switch and its circuit, checking for damaged wiring, and testing the switch's voltage.
5. How serious is OBDII code P0708 in a 2017 GMC Sierra?
- OBDII code P0708 can lead to transmission-related issues and should be addressed promptly to prevent further damage to the transmission system.
6. Can I drive my 2017 GMC Sierra with OBDII code P0708?
- It is not recommended to drive the vehicle with OBDII code P0708 as it can result in transmission problems and potential safety hazards.
7. How do I repair OBDII code P0708 in my 2017 GMC Sierra?
- Repair typically involves replacing the faulty transmission range switch, repairing any damaged wiring or connectors, ensuring proper transmission fluid levels, and clearing the trouble code.
8. Are there any DIY tips for fixing OBDII code P0708 in a 2017 GMC Sierra?
- DIY tips include checking and cleaning the connectors, inspecting the wiring for any visible damage, and ensuring the transmission fluid is at the correct level.
9. Can resetting the OBDII code P0708 in my 2017 GMC Sierra fix the issue temporarily?
- Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear.
10. How much does it cost to repair OBDII code P0708 in a 2017 GMC Sierra at a mechanic?
- The cost of repair can vary depending on the exact cause of the code, but it typically ranges from $200 to $500, including parts and labor.
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