AutoCodes – Chevrolet – P1775 2017 Chevrolet Silverado

P1775 2017 Chevrolet Silverado Code - Transmission Range Request Signal Message Counter Incorrect

Quick Answer

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module circuit poor electrical connection. 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 2017 Chevrolet Silverado indicates Transmission Range Request Signal Message Counter Incorrect.
Common causes: Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module circuit poor electrical connection.
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 Popularity 269

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Sep 29, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1775 2017 Chevrolet Silverado Description

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Operating information and commands are exchanged among the control modules. Each module on the serial data circuit maintains a transmit error counter and a receive error counter. The counter values increase with detected errors and decrease with error-free messages. The Diagnostic Trouble Code (DTC) will be set when the Transmission Range Request Signal Message Counter is Incorrect.

OBDII Code P1775 2017 Chevrolet Silverado - Transmission Range Request Signal Message Counter Incorrect - AutoCodes.com — P1775 2017 Chevrolet Silverado Code - Transmission Range Request Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P1775 2017 Chevrolet Silverado?

Faulty Transmission Control Module (TCM)
Transmission Control Module harness is open or shorted
Transmission Control Module circuit poor electrical connection

How to Fix the DTC P1775 2017 Chevrolet Silverado?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1775 2017 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1775 2017 Chevrolet Silverado code?

Need more information on how to fix the P1775 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 2017 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P1775 on a 2017 Chevrolet Silverado?

Symptoms may include harsh shifting, transmission slipping, poor acceleration, and the transmission not engaging properly.

2. What does the OBDII code P1775 "Transmission Range Request Signal Message Counter Incorrect" mean on a 2017 Chevrolet Silverado?

This code indicates that the transmission control module has detected an issue with the signal message counter related to the transmission range request.

3. What are the possible causes of OBDII code P1775 on a 2017 Chevrolet Silverado?

Potential causes include a faulty transmission range sensor, damaged wiring or connectors, a malfunctioning transmission control module, or software issues.

4. How can I diagnose OBDII code P1775 on my 2017 Chevrolet Silverado?

Diagnosis typically involves using a scan tool to retrieve the trouble codes, checking the transmission range sensor, inspecting wiring and connectors for damage, and testing the transmission control module.

5. Can I still drive my 2017 Chevrolet Silverado with OBDII code P1775 present?

It is not recommended to continue driving with this code present, as it can lead to further damage to the transmission and potentially cause safety hazards on the road.

6. How can I repair OBDII code P1775 on my 2017 Chevrolet Silverado?

Repair options may include replacing the transmission range sensor, repairing or replacing damaged wiring or connectors, reprogramming the transmission control module, or addressing any software issues.

7. Is it safe to reset the OBDII code P1775 on my 2017 Chevrolet Silverado?

While clearing the code may temporarily remove the warning light, it is important to diagnose and repair the underlying issue to prevent further transmission problems.

8. Can a DIY enthusiast fix OBDII code P1775 on a 2017 Chevrolet Silverado?

Depending on your experience and tools available, some DIY enthusiasts may be able to diagnose and repair simple issues related to this code. However, complex repairs may require professional assistance.

9. How much does it typically cost to repair OBDII code P1775 on a 2017 Chevrolet Silverado?

The cost of repair can vary depending on the exact cause of the code, parts needed, and labor rates. It is recommended to obtain quotes from local mechanics or dealerships for an accurate estimate.

10. Will OBDII code P1775 on a 2017 Chevrolet Silverado affect fuel efficiency?

Since this code is related to transmission issues, it can impact the overall performance of the vehicle, potentially leading to decreased fuel efficiency if not addressed promptly.