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P0717 GMC Code - Transmission Input Speed Sensor Circuit No Signal

Quick Answer

The P0717 GMC diagnostic trouble code (DTC) indicates that there is a problem with the Transmission Input Speed Sensor Circuit, specifically that there is no signal being received by the vehicle's engine control module (ECM) from the sensor. Common causes include Faulty transmission input speed sensor, Damaged or corroded wiring/connectors in the input speed sensor circuit, ECM software or hardware issues. 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 GMC indicates Transmission Input Speed Sensor Circuit No Signal.
Common causes
Common causes include Faulty transmission input speed sensor, Damaged or corroded wiring/connectors in the input speed sensor circuit, ECM software or hardware issues.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P0717 GMC Description

The P0717 GMC diagnostic trouble code (DTC) indicates that there is a problem with the Transmission Input Speed Sensor Circuit, specifically that there is no signal being received by the vehicle's engine control module (ECM) from the sensor. The input speed sensor is responsible for monitoring the speed of the transmission input shaft, which is crucial for the proper operation of the transmission.

OBDII Code P0717 GMC - Transmission Input Speed Sensor Circuit No Signal
P0717 GMC Code - Transmission Input Speed Sensor Circuit No Signal

Common Causes of P0717 GMC

  1. Faulty transmission input speed sensor
  2. Damaged or corroded wiring/connectors in the input speed sensor circuit
  3. ECM software or hardware issues
  4. Transmission control module (TCM) failure
  5. Mechanical issues with the transmission

Symptoms of P0717 GMC

  1. Erratic or harsh shifting
  2. Transmission slipping
  3. Transmission fails to engage
  4. Vehicle goes into limp mode
  5. Check Engine Light illuminated

How to Fix P0717 GMC

  1. Begin by diagnosing the issue using a scan tool to confirm the P0717 code.
  2. Inspect the wiring and connectors in the transmission input speed sensor circuit for any damage or corrosion. Repair or replace as necessary.
  3. Test the transmission input speed sensor for proper operation using a multimeter. Replace if faulty.
  4. If the sensor is functioning correctly, check the ECM and TCM for any software or hardware issues. Update or replace as needed.
  5. Clear the DTC and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0717 GMC

The typical repair costs for addressing a P0717 GMC code can vary depending on the specific cause of the issue. On average, the cost of replacing a transmission input speed sensor can range from $100 to $300, including parts and labor. However, if additional repairs or replacements are needed for the ECM or TCM, the total cost could increase significantly. It's recommended to consult with a professional mechanic to get an accurate estimate based on the specific circumstances of the vehicle.

What does this mean?

Tech Notes for P0717 GMC

There is a factory service bulletin for the following GMC Models:

2007-2009 GMC Acadia

2007-2009 GMC Acadia Factory Service Bulletin OBDII Code P0717

Need more information about the P0717 GMC code?

Need more information on how to fix the P0717 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0717 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0717 GMC Code

1. What are the common symptoms of OBDII code P0717 in a GMC vehicle?

- Common symptoms include erratic shifting, transmission slipping, speedometer issues, and the illumination of the Check Engine Light.

2. What could cause the OBDII code P0717 to appear in a GMC vehicle?

- The code may be triggered due to a faulty transmission input speed sensor, damaged wiring or connectors, low transmission fluid level, or a malfunctioning PCM.

3. How can I diagnose the Transmission Input Speed Sensor Circuit No Signal issue in my GMC vehicle?

- Diagnosis typically involves checking the sensor and its wiring for damage, testing the sensor's resistance, and using a scan tool to monitor sensor data while the vehicle is running.

4. Can I continue driving my GMC with the P0717 code present?

- It is not recommended to drive the vehicle with the P0717 code as it can lead to further transmission issues and potential damage. It is advisable to address the problem promptly.

5. What are the repair options for fixing the Transmission Input Speed Sensor Circuit No Signal problem in a GMC?

- Repair options may include replacing the faulty input speed sensor, repairing damaged wiring or connectors, ensuring proper transmission fluid levels, and resetting the trouble codes.

6. Is it possible to reset the P0717 code in a GMC without fixing the underlying issue?

- While clearing the trouble code may temporarily turn off the Check Engine Light, the code is likely to reappear until the root cause of the problem is addressed.

7. Can a DIY enthusiast fix the P0717 code in a GMC, or is professional help necessary?

- Depending on the individual's mechanical skills and tools available, it may be possible to address the issue DIY. However, if unsure, it is recommended to seek professional assistance.

8. Are there any preventive measures to avoid encountering the P0717 code in a GMC?

- Regularly servicing the vehicle, checking transmission fluid levels, and addressing any transmission-related issues promptly can help prevent the occurrence of the P0717 code.

9. How long does it typically take to repair the Transmission Input Speed Sensor Circuit No Signal problem in a GMC?

- The repair time can vary depending on the exact cause of the issue, availability of parts, and the individual's familiarity with the repair process. In general, it may take a few hours to complete.

10. Will fixing the P0717 code improve the overall performance and efficiency of my GMC vehicle?

- Addressing the P0717 code and ensuring the proper functioning of the transmission input speed sensor can help restore smooth shifting, improve fuel efficiency, and prevent further transmission damage.

Discuss the causes and fixes for P0717 GMC OBDII Code

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  • I took my 2016 GMC Acadia for a full diagnostic because the vehicle didn't want to drive. When I checked the code with my OBD reader, it gave me an error code of P0717. After further diagnostic, they found internal transmission failure in the 3-5-Reverse clutch drum that "needed replacement or overhaul". I had to replace my transmission w/ GM serta unit, fill w/ atf and program transmission for over $8900.

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  • Expensive repair. Thank you for sharing!

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