AutoCodes – GMC – C0392 GMC

C0392 GMC Code - Transfer Case Range Position Sensor Circuit

Quick Answer

The Transfer Case Control Module receives input from the Transfer Case Gear Position Sensor, also known as the range position sensor or the rotational position sensor. Common causes include Faulty Transfer Case Range Position Sensor, Transfer Case Range Position Sensor harness is open or shorted, Transfer Case Range Position Sensor 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: C0392 GMC indicates Transfer Case Range Position Sensor Circuit.
Common causes: Common causes include Faulty Transfer Case Range Position Sensor, Transfer Case Range Position Sensor harness is open or shorted, Transfer Case Range Position Sensor 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 5,428

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 11, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code C0392 GMC Description

The Transfer Case Control Module receives input from the Transfer Case Gear Position Sensor, also known as the range position sensor or the rotational position sensor. The Gear Position Senso receives a 5-volt reference signal from the Transfer Case Control Module. In return the Gear Position Senso sends the Transfer Case Control Module a variable pulse width modulated signal indicating the position of the transfer case. The Gear Position Sensor works in conjunction with the range actuator position sensor, inside the A16 Transfer Case Motor, also known as the transfer case range actuator, to confirm the transfer case position. The Gear Position Sensor is more sensitive than the range actuator position sensor and is able to indicate to the Transfer Case Control Module the exact position of the transfer case between range changes. It is also able to show how much clutch activation is being commanded at any time.

OBDII Code C0392 GMC - Transfer Case Range Position Sensor Circuit - AutoCodes.com — C0392 GMC Code - Transfer Case Range Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC C0392 GMC?

Faulty Transfer Case Range Position Sensor
Transfer Case Range Position Sensor harness is open or shorted
Transfer Case Range Position Sensor circuit poor electrical connection
Faulty Transfer Case Control Module

How to Fix the DTC C0392 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 does this mean?

Code Tech Notes

C0392:08 Transfer Case Range Position Sensor Circuit Performance Signal Invalid
C0392:28 Transfer Case Range Position Sensor Circuit Incorrect Frequency

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0392 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.

Need more information about the C0392 GMC code?

Need more information on how to fix the C0392 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific GMC Models

C0392 2014 GMC Sierra — Transfer Case Range Position Sensor Circuit
C0392 2015 GMC Sierra — Transfer Case Range Position Sensor Circuit
C0392 2016 GMC Sierra — Transfer Case Range Position Sensor Circuit
C0392 2017 GMC Sierra — Transfer Case Range Position Sensor Circuit
C0392 2018 GMC Sierra — Transfer Case Range Position Sensor Circuit

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 C0392 GMC Code

1. What are the common symptoms of OBDII code C0392 GMC?

The common symptoms of OBDII code C0392 GMC include erratic behavior of the transfer case, difficulty shifting gears, and an illuminated check engine light.

2. What does the OBDII code C0392 GMC indicate?

OBDII code C0392 GMC indicates a problem with the Transfer Case Range Position Sensor Circuit.

3. What are the possible causes of OBDII code C0392 GMC?

Possible causes of OBDII code C0392 GMC include a faulty transfer case range position sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning transfer case control module.

4. How can I diagnose the issue related to OBDII code C0392 GMC?

Diagnosing the issue related to OBDII code C0392 GMC involves using an OBDII scanner to retrieve the code, inspecting the transfer case range position sensor and its circuit for any visible damage, and testing the sensor's resistance and voltage output.

5. How can I repair OBDII code C0392 GMC?

To repair OBDII code C0392 GMC, you may need to replace the transfer case range position sensor, repair any damaged wiring or connectors in the sensor circuit, or reprogram the transfer case control module if necessary.

6. Is it safe to continue driving with OBDII code C0392 GMC?

It is not recommended to continue driving with OBDII code C0392 GMC as it can lead to further damage to the transfer case components and potentially compromise vehicle safety.

7. Can I reset the OBDII code C0392 GMC on my own?

You can reset the OBDII code C0392 GMC on your own using an OBDII scanner, but it is important to diagnose and address the underlying issue causing the code before resetting it.

8. How much does it typically cost to repair OBDII code C0392 GMC?

The cost to repair OBDII code C0392 GMC can vary depending on the specific cause of the issue, but it may range from $100 to $500 for parts and labor.

9. Are there any preventative maintenance steps to avoid OBDII code C0392 GMC?

To prevent OBDII code C0392 GMC, it is recommended to perform regular inspections of the transfer case components, address any warning signs promptly, and follow the manufacturer's maintenance schedule.

10. Can a DIY enthusiast fix OBDII code C0392 GMC at home?

While some DIY enthusiasts may be able to diagnose and repair OBDII code C0392 GMC at home, it is advisable to consult a professional mechanic for accurate diagnosis and proper repair to ensure the issue is resolved effectively.