P0717 2018 GMC Sierra Code - Transmission Input Speed Sensor Circuit No Signal
Quick Answer
The P0717 diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates a Transmission Input Speed Sensor Circuit No Signal. Common causes include Faulty Input Speed Sensor: The most common cause of this code is a malfunctioning input speed sensor that is not sending a signal to the vehicle's computer, Wiring Issues: Damage or corrosion to the wiring harness connected to the input speed sensor can disrupt the signal transmission, Connector Problems: Poor connection or loose connectors between the input speed sensor and the vehicle's computer can lead to a no signal issue. 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
- P0717 2018 GMC Sierra indicates Transmission Input Speed Sensor Circuit No Signal.
- Common causes
- Common causes include Faulty Input Speed Sensor: The most common cause of this code is a malfunctioning input speed sensor that is not sending a signal to the vehicle's computer, Wiring Issues: Damage or corrosion to the wiring harness connected to the input speed sensor can disrupt the signal transmission, Connector Problems: Poor connection or loose connectors between the input speed sensor and the vehicle's computer can lead to a no signal issue.
- 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 P0717 2018 GMC Sierra Description
The P0717 diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates a Transmission Input Speed Sensor Circuit No Signal. This means that the vehicle's onboard computer is not receiving any signal from the transmission input speed sensor, which is responsible for monitoring the speed of the input shaft into the transmission. The input speed sensor plays a crucial role in the transmission's operation by providing data to the vehicle's computer to help determine shift points, torque converter lockup, and other transmission functions. When the input speed sensor fails to send a signal, it can lead to erratic shifting, poor fuel economy, and potential damage to the transmission if not addressed promptly.
Common Causes of P0717 2018 GMC Sierra
- Faulty Input Speed Sensor: The most common cause of this code is a malfunctioning input speed sensor that is not sending a signal to the vehicle's computer.
- Wiring Issues: Damage or corrosion to the wiring harness connected to the input speed sensor can disrupt the signal transmission.
- Connector Problems: Poor connection or loose connectors between the input speed sensor and the vehicle's computer can lead to a no signal issue.
- Transmission Control Module (TCM) Failure: A malfunctioning TCM can prevent the input speed sensor signal from being properly interpreted by the vehicle's computer.
Symptoms of P0717 2018 GMC Sierra
- Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the vehicle's dashboard.
- Erratic Shifting: The transmission may experience erratic shifting, such as delayed or harsh shifts, due to the lack of input speed sensor signal.
- Decreased Fuel Efficiency: A faulty input speed sensor can cause the transmission to operate inefficiently, leading to decreased fuel economy.
- Stalling: In severe cases, the vehicle may stall when coming to a stop due to the transmission not receiving accurate input speed data.
How to Fix P0717 2018 GMC Sierra
- Diagnose the Issue: Use a diagnostic scanner to confirm the P0717 code and perform a visual inspection of the input speed sensor and its wiring.
- Replace Input Speed Sensor: If the sensor is faulty, replace it with a new one and ensure proper installation.
- Check Wiring and Connectors: Inspect the wiring harness for any damage or corrosion, repair or replace as needed, and ensure secure connections.
- Test Drive: After repairs are completed, test drive the vehicle to ensure the code does not return and that the transmission is operating correctly.
Cost to Fix P0717 2018 GMC Sierra
The typical repair costs for addressing a P0717 code on a 2018 GMC Sierra can range from $150 to $400, including parts and labor. However, specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.
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