C0387 Chevrolet 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 Chevrolet 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 Chevrolet 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 Chevrolet?
- 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 Chevrolet?
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 Chevrolet 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 Chevrolet Models
- C0387 2014 Chevrolet Silverado — Unable to Complete Shift
- C0387 2015 Chevrolet Silverado — Unable to Complete Shift
- C0387 2016 Chevrolet Silverado — Unable to Complete Shift
- C0387 2017 Chevrolet Silverado — Unable to Complete Shift
- C0387 2018 Chevrolet Silverado — Unable to Complete Shift
Frequently Asked Questions about C0387 Chevrolet Code
What does OBDII code C0387 mean for a Chevrolet vehicle?
OBDII code C0387 indicates that the vehicle's transmission control module (TCM) is unable to complete a shift, often due to issues with the transmission system or related components.
What are common symptoms associated with code C0387?
Common symptoms include harsh or erratic shifting, slipping of the transmission, warning lights on the dashboard (such as the check engine light), and potential loss of power during acceleration.
What could cause the C0387 code to trigger?
Possible causes include low transmission fluid, a faulty transmission control module, issues with the shift solenoid, wiring problems, or mechanical failures within the transmission itself.
How can I diagnose the C0387 code?
To diagnose the code, start by checking the transmission fluid level and condition. Then, inspect the wiring and connectors related to the transmission control module and shift solenoid. Scanning the vehicle for additional trouble codes can also provide more context.
What steps can I take to repair the issue indicated by code C0387?
Repairs may involve replacing low transmission fluid, fixing any damaged wiring, replacing a faulty shift solenoid, or reprogramming or replacing the transmission control module, depending on what the diagnosis reveals.
Can I drive my vehicle if it has the C0387 code?
While it may be possible to drive with code C0387, it is not recommended as it could lead to further transmission damage or decreased vehicle performance. It's best to have it assessed and repaired promptly.
Is there a risk of further damage if I ignore code C0387?
Yes, ignoring code C0387 can lead to more severe transmission problems, possibly resulting in costly repairs or complete transmission failure. Prompt attention is advisable.
Will clearing the code C0387 fix the problem?
Clearing the code may temporarily turn off the check engine light, but it will not resolve the underlying issue. The code is likely to reappear if the root cause is not addressed.
How much might it cost to fix a C0387 code issue?
Repair costs can vary widely depending on the cause of the code. Simple fixes like fluid changes may cost under $100, while more complex repairs, such as replacing the transmission control module, can range from $500 to over $2000.
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