P1775 GMC 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 GMC 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.
Code P1775 GMC Description
What are the Possible Causes of the DTC P1775 GMC?
- 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 GMC?
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 GMC 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.
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Information for Specific GMC Models
- P1775 2014 GMC Sierra — Transmission Range Request Signal Message Counter Incorrect
- P1775 2015 GMC Sierra — Transmission Range Request Signal Message Counter Incorrect
- P1775 2016 GMC Sierra — Transmission Range Request Signal Message Counter Incorrect
- P1775 2017 GMC Sierra — Transmission Range Request Signal Message Counter Incorrect
- P1775 2018 GMC Sierra — Transmission Range Request Signal Message Counter Incorrect
Frequently Asked Questions about P1775 GMC Code
1. What are the common symptoms of OBDII code P1775 in a GMC vehicle?
- Common symptoms of code P1775 include harsh shifting, transmission slipping, and the inability to shift gears properly.
2. What could be causing the OBDII code P1775 to appear in a GMC vehicle?
- The code P1775 in a GMC vehicle is typically triggered by a faulty transmission range sensor, damaged wiring in the transmission range sensor circuit, or a malfunctioning transmission control module.
3. How can I diagnose the OBDII code P1775 in my GMC vehicle?
- To diagnose code P1775, you can use an OBDII scanner to retrieve the trouble codes, inspect the transmission range sensor and its wiring for any damage, and test the transmission control module for proper functionality.
4. Is it safe to continue driving my GMC vehicle with the OBDII code P1775 present?
- It is not recommended to drive your GMC vehicle with the code P1775 present, as it can lead to further damage to the transmission system and potentially cause safety issues on the road.
5. How can I repair OBDII code P1775 in my GMC vehicle?
- Repairing code P1775 in a GMC vehicle involves replacing the faulty transmission range sensor, repairing any damaged wiring in the sensor circuit, or reprogramming the transmission control module.
6. Can a DIY enthusiast fix the OBDII code P1775 issue in a GMC vehicle?
- While some DIY enthusiasts may have the skills to diagnose and repair code P1775, it is recommended to seek professional help due to the complexity of transmission system repairs.
7. How much does it typically cost to repair OBDII code P1775 in a GMC vehicle?
- The cost of repairing code P1775 in a GMC vehicle can vary depending on the extent of the damage and the specific parts that need to be replaced, but it can range from $200 to $600.
8. Are there any preventive measures to avoid OBDII code P1775 in a GMC vehicle?
- To prevent code P1775 in a GMC vehicle, it's important to perform regular maintenance checks on the transmission system, address any warning signs promptly, and avoid driving aggressively.
9. Can a faulty battery or alternator cause the OBDII code P1775 to appear in a GMC vehicle?
- While a faulty battery or alternator can cause electrical issues, they are not common causes of code P1775. It is more likely related to the transmission range sensor or its circuit.
10. How long does it take to repair OBDII code P1775 in a GMC vehicle?
- The repair time for code P1775 in a GMC vehicle can vary depending on the extent of the damage and the availability of parts, but it typically takes a few hours to half a day for a professional mechanic to complete the repair.
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