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P1775 2016 Chevrolet Silverado Code - Transmission Range Request Signal Message Counter Incorrect

Quick Answer

The P1775 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates that the Transmission Range Request Signal Message Counter is incorrect. Common causes include Faulty transmission range sensor, Wiring issues or loose connections in the transmission range sensor circuit, Malfunctioning TCM. 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
P1775 2016 Chevrolet Silverado indicates Transmission Range Request Signal Message Counter Incorrect.
Common causes
Common causes include Faulty transmission range sensor, Wiring issues or loose connections in the transmission range sensor circuit, Malfunctioning TCM.
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 11, 2024
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Code P1775 2016 Chevrolet Silverado Description

The P1775 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates that the Transmission Range Request Signal Message Counter is incorrect. This means that the transmission control module (TCM) is not receiving the proper signal from the transmission range sensor, leading to a discrepancy in the message counter. The transmission range sensor is responsible for indicating the gear position of the vehicle to the TCM, allowing it to adjust shift points and other transmission functions accordingly.

OBDII Code P1775 2016 Chevrolet Silverado - Transmission Range Request Signal Message Counter Incorrect
P1775 2016 Chevrolet Silverado Code - Transmission Range Request Signal Message Counter Incorrect

Common Causes of P1775 2016 Chevrolet Silverado

  1. Faulty transmission range sensor
  2. Wiring issues or loose connections in the transmission range sensor circuit
  3. Malfunctioning TCM
  4. Software issues with the TCM
  5. Mechanical problems within the transmission itself

Symptoms of P1775 2016 Chevrolet Silverado

  1. Erratic shifting behavior
  2. Harsh engagements when shifting gears
  3. Transmission slipping or getting stuck in a specific gear
  4. Reduced fuel efficiency
  5. Illumination of the Check Engine Light

How to Fix P1775 2016 Chevrolet Silverado

  1. Begin by connecting a diagnostic scan tool to the vehicle's OBD-II port to retrieve the specific fault codes, including P1775.
  2. Inspect the wiring and connections related to the transmission range sensor for any signs of damage or corrosion. Repair or replace as necessary.
  3. Test the transmission range sensor using a multimeter to ensure it is functioning correctly. Replace the sensor if it is faulty.
  4. Clear the DTCs from the TCM's memory using the scan tool and perform a transmission relearn procedure to recalibrate the system.
  5. Test drive the vehicle to verify that the issue has been resolved and that the transmission is operating smoothly.

Cost to Fix P1775 2016 Chevrolet Silverado

The typical repair costs for addressing a P1775 code on a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue. On average, the parts for this repair, such as a new transmission range sensor, can range from $100 to $200. Labor costs can add an additional $100 to $200, bringing the total repair bill to around $200 to $400. However, it's important to note that the actual costs may vary based on the location, the labor rates of the auto repair shop, and any additional parts or services needed. It's recommended to obtain a detailed estimate from a trusted mechanic before proceeding with the repair.

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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 P1775 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P1775 in a 2016 Chevrolet Silverado?

The common symptoms include transmission shifting issues, hesitation or jerking during gear changes, and the Check Engine light illuminated on the dashboard.

2. What does the OBDII code P1775 "Transmission Range Request Signal Message Counter Incorrect" mean for a 2016 Chevrolet Silverado?

This code indicates that the transmission control module has detected an incorrect count of signal messages related to the transmission range request.

3. What are the possible causes of OBDII code P1775 in a 2016 Chevrolet Silverado?

Possible causes include a faulty transmission range sensor, damaged wiring or connectors in the transmission range sensor circuit, or a problem with the transmission control module.

4. How can I diagnose OBDII code P1775 in my 2016 Chevrolet Silverado?

Diagnosis typically involves using an OBDII scanner to retrieve the code, checking the transmission range sensor for proper operation, inspecting related wiring and connectors for damage, and testing the transmission control module.

5. Can I continue driving my 2016 Chevrolet Silverado with OBDII code P1775 active?

It is not recommended to drive the vehicle with this code active, as it can lead to further transmission issues and potential safety hazards. It's best to address the problem promptly.

6. How can I repair OBDII code P1775 in my 2016 Chevrolet Silverado?

Repair options may include replacing the transmission range sensor, repairing or replacing damaged wiring or connectors, or reprogramming the transmission control module. It's recommended to consult a qualified mechanic for proper diagnosis and repair.

7. Is OBDII code P1775 a common issue in 2016 Chevrolet Silverado vehicles?

While it may not be as common as some other codes, P1775 can still occur in 2016 Chevrolet Silverado trucks, especially with age and wear on transmission components.

8. Can a DIY enthusiast fix OBDII code P1775 in a 2016 Chevrolet Silverado?

Depending on your skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair this code themselves. However, due to the complexity of transmission systems, it's advisable to seek professional help if unsure.

9. Will resetting the trouble codes make OBDII code P1775 disappear in my 2016 Chevrolet Silverado?

Resetting the trouble codes may temporarily clear the Check Engine light, but if the underlying issue causing P1775 is not addressed, the code is likely to reappear after some driving cycles.

10. How much does it typically cost to repair OBDII code P1775 in a 2016 Chevrolet Silverado?

The cost of repairing this code can vary depending on the specific cause, parts needed, labor rates, and whether you choose to go to a dealership or an independent mechanic. It's recommended to get a few quotes for an accurate estimate.

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