AutoCodes – GMC – C0765 2018 GMC Sierra

C0765 2018 GMC Sierra Code - Right Rear Low Tire Pressure Sensor

Quick Answer

The Tire Pressure Monitor System (TPMS) has a Radio Frequency (RF) transmitting pressure sensor in each wheel/tire assembly. Common causes include Perform the Tire Pressure Indicator Sensor Learn, Faulty Right Rear Low Tire Pressure Sensor, Right Rear Low Tire Pressure Sensor harness is open or shorted. 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: C0765 2018 GMC Sierra indicates Right Rear Low Tire Pressure Sensor.
Common causes: Common causes include Perform the Tire Pressure Indicator Sensor Learn, Faulty Right Rear Low Tire Pressure Sensor, Right Rear Low Tire Pressure Sensor harness is open or shorted.
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 385

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 Jul 17, 2023

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code C0765 2018 GMC Sierra Description

The Tire Pressure Monitor System (TPMS) has a Radio Frequency (RF) transmitting pressure sensor in each wheel/tire assembly. As vehicle speed increases, centrifugal force puts the sensor into Drive mode. The sensors send the tire pressure data to the Remote Control Door Lock Receiver (RCDLR) which in turn translates the received sensor data into sensor presence, sensor mode, and tire pressure before passing it onto the Body Control Module (BCM). Once vehicle speed is greater than 40 km/h (25 MPH), the BCM waits for the first sensor to go into Drive mode, then checks if all sensors have gone into Drive mode. If one or more sensors do not go into these modes or do not transmit at all, the BCM will set DTC C0750, C0755, C0760, or C0765 respectively.

OBDII Code C0765 2018 GMC Sierra - Right Rear Low Tire Pressure Sensor - AutoCodes.com — C0765 2018 GMC Sierra Code - Right Rear Low Tire Pressure Sensor

What does this mean?

What are the Possible Causes of the DTC C0765 2018 GMC Sierra?

Perform the Tire Pressure Indicator Sensor Learn
Faulty Right Rear Low Tire Pressure Sensor
Right Rear Low Tire Pressure Sensor harness is open or shorted
Right Rear Low Tire Pressure Sensor circuit poor electrical connection

How to Fix the DTC C0765 2018 GMC Sierra?

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 does this mean?

Code Tech Notes

A sensor may have been damaged due to a previous wheel/tire service or flat tire event.
Some aftermarket wheel valve stem holes are located further from the wheel rim than the original equipment wheels. When using the tire pressure monitor special tool to activate a sensor, ensure the tool is placed along the tire sidewall and no further than 15 cm (6 in) from the sensor and the antenna is aiming upward.
Occasionally sensors can become mislocated due to previous tire rotations where the sensor learn procedure was not performed. Always learn the sensors to ensure the DTC set is for that actual physical corner of the vehicle.
A sensor with low battery condition will set a sensor DTC but will not illuminate the low tire pressure indicator or display a message on the driver information center if equipped. The sensor battery condition can be verified in the scan tool BCM data list. If a sensor's low battery condition is indicated on the scan tool, the sensor will need to be replaced.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0765 2018 GMC Sierra 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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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 C0765 2018 GMC Sierra Code

1. What does OBDII code C0765 on a 2018 GMC Sierra indicate?

The OBDII code C0765 specifically pertains to the Right Rear Low Tire Pressure Sensor on a 2018 GMC Sierra.

2. How can I identify if the Right Rear Low Tire Pressure Sensor is faulty?

Common symptoms of a faulty Right Rear Low Tire Pressure Sensor include inaccurate tire pressure readings, warning lights on the dashboard, or a persistent low tire pressure message.

3. What are some possible causes of the C0765 OBDII code on a 2018 GMC Sierra?

The C0765 code is often triggered by issues such as a malfunctioning tire pressure sensor, damaged wiring or connectors, low tire pressure in the right rear tire, or a faulty tire pressure monitoring system module.

4. Can I still drive my 2018 GMC Sierra with the C0765 code triggered?

It is generally safe to drive with the C0765 code triggered, but it is recommended to address the issue promptly to ensure accurate tire pressure monitoring for optimal safety and performance.

5. How can I troubleshoot and repair the Right Rear Low Tire Pressure Sensor issue on my 2018 GMC Sierra?

To troubleshoot and repair the C0765 code, start by checking the tire pressure in the right rear tire, inspecting the sensor and its connections for any visible damage, and using a diagnostic tool to reset the system or replace the faulty sensor if necessary.

6. Is it possible to reset the C0765 code on a 2018 GMC Sierra without professional help?

Yes, you can attempt to reset the C0765 code by using an OBDII scanner to clear the fault codes. However, if the issue persists, it is recommended to seek professional assistance for a thorough diagnosis and repair.

7. How much does it typically cost to repair the Right Rear Low Tire Pressure Sensor on a 2018 GMC Sierra?

The cost of repairing the Right Rear Low Tire Pressure Sensor can vary depending on the extent of the issue and whether you choose to replace the sensor yourself or have it done by a professional. Costs can range from around $50 for a DIY sensor replacement to over $200 for professional repairs.

8. Are there any DIY tips for addressing the C0765 code on a 2018 GMC Sierra?

DIY tips for addressing the C0765 code include checking the tire pressure, inspecting the sensor and wiring for damage, ensuring proper connections, and using an OBDII scanner to clear the fault codes. If unsure, it's best to consult a professional mechanic.

9. Can the C0765 code on a 2018 GMC Sierra cause any other issues besides the tire pressure sensor malfunction?

While the C0765 code primarily indicates a Right Rear Low Tire Pressure Sensor issue, ignoring the problem could lead to inaccurate tire pressure readings, potential safety hazards, and increased fuel consumption due to improper tire pressure maintenance.

10. How often should I check and maintain the tire pressure sensors on my 2018 GMC Sierra to prevent C0765 code recurrence?

It is recommended to regularly check and maintain the tire pressure sensors on your 2018 GMC Sierra as part of routine vehicle maintenance. Checking monthly or before long trips can help prevent issues like the C0765 code from occurring and ensure optimal tire performance and safety.