P1775 2016 GMC Sierra Code - Transmission Range Request Signal Message Counter Incorrect
Quick Answer
The P1775 diagnostic trouble code (DTC) for a 2016 GMC Sierra 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 GMC Sierra 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1775 2016 GMC Sierra Description
The P1775 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates that the Transmission Range Request Signal Message Counter is incorrect. This code is related to the transmission control module (TCM) and is typically triggered when the TCM receives an incorrect number of messages related to the transmission range request signal. The transmission range request signal is used to inform the TCM of the gear selection (Park, Reverse, Neutral, Drive, etc.) made by the driver. When the message counter is incorrect, it can lead to issues with gear shifting, transmission performance, and overall drivability of the vehicle.
Common Causes of P1775 2016 GMC Sierra
- Faulty transmission range sensor
- Wiring issues or loose connections in the transmission range sensor circuit
- Malfunctioning TCM
- Software glitches in the TCM
- Electrical interference or communication errors within the vehicle's network
Symptoms of P1775 2016 GMC Sierra
- Harsh or delayed shifting
- Transmission slipping
- Inability to shift gears
- Illumination of the Check Engine Light
- Reduced fuel efficiency
How to Fix P1775 2016 GMC Sierra
- Begin by conducting a thorough inspection of the transmission range sensor and its wiring harness to check for any visible damage or loose connections.
- Use a diagnostic scan tool to retrieve and clear the fault codes stored in the TCM.
- Test the transmission range sensor using a multimeter to ensure it is functioning within specifications.
- If the sensor is faulty, replace it with a new one and recalibrate as necessary.
- If the issue persists, further diagnostics may be required to pinpoint the exact cause, such as testing the TCM for proper operation or checking for software updates.
Cost to Fix P1775 2016 GMC Sierra
The cost of repairing a P1775 code on a 2016 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of parts for a transmission range sensor replacement can range from $100 to $300, while labor costs can add an additional $100 to $200. Overall, the total repair cost for addressing this code may fall within the range of $200 to $500. However, it is essential to note that these estimates are approximate, and actual costs may vary based on factors such as location, labor rates, and any additional repairs or diagnostics needed. It is advisable to consult with a qualified mechanic or repair shop for a more accurate cost estimate.
Need more information about the P1775 2016 GMC Sierra code?
Need more information on how to fix the P1775 2016 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1775 2016 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1775 2016 GMC Sierra Code
1. What are the common symptoms of OBDII code P1775 in a 2016 GMC Sierra?
- Common symptoms include erratic shifting, difficulty shifting gears, transmission slippage, and the vehicle going into limp mode.
2. What does the OBDII code P1775 "Transmission Range Request Signal Message Counter Incorrect" mean for a 2016 GMC Sierra?
- This code indicates a discrepancy between the signal sent by the transmission range sensor and the expected value stored in the vehicle's computer.
3. What are the possible causes of OBDII code P1775 in a 2016 GMC Sierra?
- The possible causes include a faulty transmission range sensor, damaged wiring or connectors in the transmission range sensor circuit, or issues with the vehicle's computer.
4. How serious is OBDII code P1775 in a 2016 GMC Sierra?
- This code can lead to drivability issues and potential transmission damage if left unresolved. It is recommended to address this issue promptly.
5. Can OBDII code P1775 in a 2016 GMC Sierra be fixed without professional help?
- Depending on your mechanical skills, you may be able to fix this issue by checking and repairing the transmission range sensor circuit. However, professional diagnosis and repair are recommended for accurate and lasting solutions.
6. How can I diagnose OBDII code P1775 in a 2016 GMC Sierra?
- Diagnosis involves using a scan tool to read the code, checking the transmission range sensor for proper operation, inspecting the wiring and connectors for damage, and verifying the signal values with manufacturer specifications.
7. Are there any DIY repair tips for addressing OBDII code P1775 in a 2016 GMC Sierra?
- DIY repair tips include checking and cleaning the transmission range sensor connectors, inspecting the wiring for damage, and ensuring proper alignment of the sensor.
8. Will driving with OBDII code P1775 in a 2016 GMC Sierra cause further damage?
- Continuing to drive with this code may lead to further transmission issues and potential damage. It is best to address the underlying problem as soon as possible.
9. How much does it typically cost to repair OBDII code P1775 in a 2016 GMC Sierra?
- The cost of repair can vary depending on the cause of the issue and whether professional help is required. Repairs may range from a few hundred to over a thousand dollars.
10. Can resetting the OBDII code P1775 in a 2016 GMC Sierra resolve the issue temporarily?
- Resetting the code may temporarily clear the warning light, but if the underlying issue is not fixed, the code is likely to reappear once the problem is detected again by the vehicle's computer.
Discuss the causes and fixes for P1775 2016 GMC Sierra OBDII Code
Code P1775 2016 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.