P0708 2017 Chevrolet Silverado Code - Transmission Range Switch Circuit High Voltage
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
- P0708 2017 Chevrolet Silverado indicates Transmission Range Switch Circuit High Voltage.
- 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 P0708 2017 Chevrolet Silverado 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 the internal mode switch is reporting an illegal range for greater than 1 s.
What are the Possible Causes of the DTC P0708 2017 Chevrolet Silverado?
- 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 P0708 2017 Chevrolet Silverado?
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 P0708 2017 Chevrolet Silverado 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 P0708 2017 Chevrolet Silverado Code
1. What does the OBDII code P0708 mean on a 2017 Chevrolet Silverado?
P0708 indicates a problem with the Transmission Range Switch Circuit, specifically that it is reading high voltage, which can affect the vehicle's ability to detect the correct gear.
2. What are the common symptoms of code P0708 on a 2017 Chevy Silverado?
Symptoms may include difficulty shifting gears, the transmission being stuck in one gear, erratic shifting, or the vehicle failing to start.
3. What causes the P0708 code to appear on a 2017 Chevrolet Silverado?
Common causes include a faulty transmission range sensor, damaged wiring or connectors, or an issue with the vehicle’s powertrain control module (PCM).
4. Can a P0708 code cause drivability issues?
Yes, it can cause problems such as improper gear shifting, reduced performance, or a failure of the transmission to engage correctly.
5. How can I diagnose the P0708 code on my 2017 Silverado?
Start by inspecting the transmission range sensor, its wiring, and connectors for damage or corrosion. Use a multimeter to check voltage levels and a scan tool to monitor live data.
6. Is it safe to drive a 2017 Chevrolet Silverado with the P0708 code?
Driving with this code is not recommended, as it can lead to further transmission damage and unsafe driving conditions.
7. How do I fix the P0708 code on a 2017 Chevy Silverado?
Repairs may include replacing the transmission range sensor, repairing or replacing damaged wiring, or reprogramming the PCM if necessary.
8. How much does it cost to repair the P0708 code on a 2017 Silverado?
Repair costs vary but typically range from $150 to $400 depending on whether the sensor, wiring, or other components need replacement.
9. Can a faulty Transmission Range Sensor trigger the P0708 code?
Yes, a malfunctioning sensor is one of the most common causes of this code.
10. Will clearing the P0708 code fix the issue on a 2017 Chevrolet Silverado?
Clearing the code may temporarily remove it, but the underlying issue must be resolved to prevent the code from returning.
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