C0387 2015 GMC Sierra Code - Unable to Complete Shift
Quick Answer
The Transfer Case Motor, also known as the transfer case range actuator, is a bi-directional, permanent magnet, DC motor. Common causes include Faulty Transfer Case Motor (Transfer Case Two/Four Wheel Drive Actuator), Transfer Case Motor harness is open or shorted, Transfer Case Motor 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
- C0387 2015 GMC Sierra indicates Unable to Complete Shift.
- Common causes
- Common causes include Faulty Transfer Case Motor (Transfer Case Two/Four Wheel Drive Actuator), Transfer Case Motor harness is open or shorted, Transfer Case Motor 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 C0387 2015 GMC Sierra Description
If the shift lever detent shaft were to bind, or there was a mechanical failure, or the transfer case clockwise circuit and the transfer case counterclockwise circuit were shorted together, the shift would not be completed. This will cause the Diagnostic Trouble Code (DTC) to be set in order to protect system components from damage.
What are the Possible Causes of the DTC C0387 2015 GMC Sierra?
- Faulty Transfer Case Motor (Transfer Case Two/Four Wheel Drive Actuator)
- Transfer Case Motor harness is open or shorted
- Transfer Case Motor circuit poor electrical connection
How to Fix the DTC C0387 2015 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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C0387 2015 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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Frequently Asked Questions about C0387 2015 GMC Sierra Code
1. What are the common symptoms of OBDII code C0387 on a 2015 GMC Sierra?
- Common symptoms include difficulty shifting gears, delays in shifting, or complete failure to shift.
2. What does OBDII code C0387 indicate in a 2015 GMC Sierra?
- OBDII code C0387 typically indicates that the vehicle's transmission is unable to complete a shift.
3. What are the possible causes of OBDII code C0387 on a 2015 GMC Sierra?
- Possible causes include low transmission fluid, a faulty shift solenoid, a malfunctioning transmission control module, or mechanical issues within the transmission.
4. How can I diagnose the issue related to OBDII code C0387 on my 2015 GMC Sierra?
- A comprehensive diagnostic scan of the transmission system using an OBDII scanner can help pinpoint the exact cause of the issue.
5. Is it safe to drive my 2015 GMC Sierra with OBDII code C0387?
- It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the transmission.
6. Can I reset OBDII code C0387 on my 2015 GMC Sierra by disconnecting the battery?
- Disconnecting the battery may clear the code temporarily, but it is important to address the underlying issue to prevent the code from reappearing.
7. How much does it typically cost to repair OBDII code C0387 on a 2015 GMC Sierra?
- The cost of repair can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars.
8. Is it possible to repair OBDII code C0387 on a 2015 GMC Sierra myself?
- Repairing this code may require advanced knowledge and tools, so it is recommended to seek assistance from a qualified mechanic or dealership.
9. Can a software update fix OBDII code C0387 on a 2015 GMC Sierra?
- In some cases, a software update from the manufacturer may address the issue, so it is worth checking with a dealership for any available updates.
10. How often does OBDII code C0387 occur in 2015 GMC Sierra vehicles?
- While not extremely common, OBDII code C0387 can occur in 2015 GMC Sierra vehicles due to various transmission-related issues.
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