P0717 2015 GMC Sierra Code - Transmission Input Speed Sensor Circuit No Signal
Quick Answer
The P0717 diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates a problem with the Transmission Input Speed Sensor Circuit, specifically that there is no signal being received. Common causes include Faulty Input Speed Sensor: The most common cause of this code is a malfunctioning input speed sensor itself, Wiring Issues: Problems with the wiring harness connecting the sensor to the ECM or TCM can also trigger this code, Sensor Alignment: If the sensor is not properly aligned or installed correctly, it may not provide a signal to the vehicle's computer system. 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 2015 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 itself, Wiring Issues: Problems with the wiring harness connecting the sensor to the ECM or TCM can also trigger this code, Sensor Alignment: If the sensor is not properly aligned or installed correctly, it may not provide a signal to the vehicle's computer system.
- 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 2015 GMC Sierra Description
The P0717 diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates a problem with the Transmission Input Speed Sensor Circuit, specifically that there is no signal being received. The input speed sensor is a crucial component of the transmission system, as it monitors the speed of the input shaft and provides this information to the vehicle's engine control module (ECM) or transmission control module (TCM). This data is essential for the proper operation of the transmission, as it helps the vehicle's computer system determine the appropriate shift points and ensure smooth gear changes.
Common Causes of P0717 2015 GMC Sierra
- Faulty Input Speed Sensor: The most common cause of this code is a malfunctioning input speed sensor itself.
- Wiring Issues: Problems with the wiring harness connecting the sensor to the ECM or TCM can also trigger this code.
- Sensor Alignment: If the sensor is not properly aligned or installed correctly, it may not provide a signal to the vehicle's computer system.
- ECM/TCM Malfunction: Issues with the engine control module or transmission control module can also lead to a lack of signal from the input speed sensor.
- Transmission Fluid Contamination: Contaminated transmission fluid can damage the sensor or affect its ability to function properly.
Symptoms of P0717 2015 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 exhibit erratic shifting behavior, such as delayed or harsh gear changes.
- Slipping Transmission: The transmission may slip, meaning it fails to engage properly or shifts unexpectedly.
- Decreased Fuel Efficiency: A malfunctioning input speed sensor can lead to decreased fuel efficiency as the transmission may not be operating optimally.
- Transmission Stuck in Gear: In severe cases, the transmission may get stuck in a particular gear, limiting the vehicle's drivability.
How to Fix P0717 2015 GMC Sierra
- Diagnose the Issue: Use a scan tool to retrieve the trouble code and perform a thorough inspection of the input speed sensor and its wiring.
- Replace the Input Speed Sensor: If the sensor is found to be faulty, replace it with a new one following the manufacturer's guidelines.
- Check Wiring and Connections: Inspect the wiring harness for any damage or corrosion, and ensure all connections are secure and free of debris.
- Reset the Code: Clear the DTC using a scan tool after completing the repair to reset the check engine light.
- Test Drive: Take the vehicle for a test drive to ensure the transmission is operating smoothly and that the code does not reappear.
Cost to Fix P0717 2015 GMC Sierra
The cost of repairing a P0717 code on a 2015 GMC Sierra can vary depending on the specific cause of the issue and the labor rates in your area. Typically, the cost of replacing the input speed sensor itself ranges from $100 to $200, while the labor cost for this repair can be around $100 to $150 per hour. Additional costs may include diagnostic time, wiring repairs, or potential ECM/TCM replacement if necessary. Overall, the total repair cost for this issue could range from $200 to $500 or more, depending on the extent of the repairs needed. It's recommended to consult with a qualified mechanic or repair shop to get an accurate estimate based on your vehicle's specific needs and location.
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