P0708 2018 Chevrolet Silverado Code - Transmission Range Switch Circuit High Voltage
Quick Answer
The P0708 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates a problem with the Transmission Range Switch Circuit High Voltage. Common causes include Faulty transmission range switch, Damaged or corroded wiring in the transmission range switch circuit, Malfunctioning transmission control module. 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 2018 Chevrolet Silverado indicates Transmission Range Switch Circuit High Voltage.
- Common causes
- Common causes include Faulty transmission range switch, Damaged or corroded wiring in the transmission range switch circuit, Malfunctioning transmission control module.
- 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 2018 Chevrolet Silverado Description
The P0708 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates a problem with the Transmission Range Switch Circuit High Voltage. This code specifically relates to the transmission range switch, which is responsible for telling the vehicle's computer which gear the transmission is in. The transmission range switch, also known as the neutral safety switch or transmission position switch, plays a crucial role in ensuring the proper operation of the transmission.
Common Causes of P0708 2018 Chevrolet Silverado
- Faulty transmission range switch.
- Damaged or corroded wiring in the transmission range switch circuit.
- Malfunctioning transmission control module.
- Loose or poor electrical connections.
- Water or moisture intrusion in the transmission range switch circuit.
Symptoms of P0708 2018 Chevrolet Silverado
- Trouble shifting gears or inability to shift into certain gears.
- Harsh or erratic shifting patterns.
- Vehicle stalling or difficulty starting.
- Check Engine Light illuminated on the dashboard.
- Transmission slipping or jerking during acceleration.
How to Fix P0708 2018 Chevrolet Silverado
- Begin by connecting a diagnostic scanner to the vehicle's OBD-II port to retrieve the specific trouble codes, including P0708.
- Inspect the transmission range switch and its wiring for any visible signs of damage, corrosion, or loose connections.
- Test the transmission range switch using a multimeter to check for proper voltage output and continuity.
- If the transmission range switch is faulty, replace it with a new OEM or aftermarket unit.
- Clear the trouble codes from the vehicle's computer using the diagnostic scanner, and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0708 2018 Chevrolet Silverado
The typical repair costs for addressing a P0708 code in a 2018 Chevrolet Silverado can vary depending on the specific cause of the issue and the cost of replacement parts. On average, the cost for parts such as a new transmission range switch can range from $50 to $150, while labor costs for diagnosis and repair may add another $100 to $200. Overall, the total repair cost for addressing a P0708 code could range from $150 to $350, excluding any additional fees or taxes.
Tech Notes for P0708 2018 Chevrolet Silverado
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Frequently Asked Questions about P0708 2018 Chevrolet Silverado Code
What does the OBDII code P0708 mean for a 2018 Chevrolet Silverado?
1. The code P0708 indicates a high voltage issue in the Transmission Range Switch Circuit, which monitors the position of the gear selector. 2.
What are the common symptoms of the P0708 code on a 2018 Chevrolet Silverado?
Symptoms may include the transmission not shifting properly, the gear position not displaying correctly, the vehicle going into limp mode, or the check engine light turning on. 3.
What causes the P0708 code to appear on a 2018 Chevrolet Silverado?
Common causes include a faulty transmission range sensor, damaged wiring or connectors in the circuit, or a problem with the Powertrain Control Module (PCM). 4.
Can I continue driving my 2018 Chevrolet Silverado with the P0708 code?
It is not recommended to drive with this code active, as it can lead to transmission damage or unsafe driving conditions due to gear selection issues. 5.
How do I diagnose the P0708 code on a 2018 Chevrolet Silverado?
Start by inspecting the transmission range sensor, wiring, and connectors for damage or corrosion. Use a multimeter to test circuit voltage and continuity, and scan the PCM for related codes. 6.
How is the P0708 code typically fixed on a 2018 Chevrolet Silverado?
Repairs may include replacing the transmission range sensor, repairing or replacing damaged wiring or connectors, or reprogramming/updating the PCM if necessary. 7.
How much does it cost to repair the P0708 code on a 2018 Chevrolet Silverado?
The repair cost can range from $150 to $400, depending on whether the issue is with the sensor, wiring, or PCM. 8.
Can a dead battery cause the P0708 code on a 2018 Chevrolet Silverado?
A dead or weak battery is unlikely to directly cause this code, but low voltage can sometimes lead to electrical issues that trigger transmission-related codes. 9.
Does the P0708 code require reprogramming the PCM on a 2018 Chevrolet Silverado?
Reprogramming the PCM is only necessary if the issue stems from a software glitch or if recommended by a service bulletin. 10.
Can I reset the P0708 code on my 2018 Chevrolet Silverado without repairs?
Clearing the code without addressing the underlying issue may temporarily turn off the check engine light, but the code will likely return if the problem persists.
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