B310E 2018 GMC Sierra Code - Keyless Entry Transmitter 7 Battery
Quick Answer
With each press of a keyless entry transmitter button, a message containing the current battery state of the transmitter is sent to the Remote Control Door Lock Receiver (RCDLR), along with the commanded keyless entry function. Common causes include Low Keyless Entry Transmitter Battery, Faulty Keyless Entry Transmitter. 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
- B310E 2018 GMC Sierra indicates Keyless Entry Transmitter 7 Battery.
- Common causes
- Common causes include Low Keyless Entry Transmitter Battery, Faulty Keyless Entry Transmitter.
- 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 B310E 2018 GMC Sierra Description
What are the Possible Causes of the DTC B310E 2018 GMC Sierra?
- Low Keyless Entry Transmitter Battery
- Faulty Keyless Entry Transmitter
How to Fix the DTC B310E 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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B310E 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.
Need more information about the B310E 2018 GMC Sierra code?
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Frequently Asked Questions about B310E 2018 GMC Sierra Code
1. What does OBDII code B310E mean on a 2018 GMC Sierra?
Code B310E indicates an issue with the battery in Keyless Entry Transmitter 7, which refers to one of the programmed key fobs.
2. What are the symptoms of B310E on a 2018 GMC Sierra?
Common symptoms include difficulty locking or unlocking doors, the key fob not being detected, or intermittent keyless entry functionality.
3. What causes the B310E code to trigger?
The primary cause is a weak or dead battery in the key fob associated with Transmitter 7. Other causes could include poor electrical connections or a malfunction in the key fob.
4. How do I fix the B310E code on my GMC Sierra?
Start by replacing the battery in the affected key fob. If the issue persists, inspect the key fob for damage or have it reprogrammed by a dealership.
5. What type of battery does the key fob for a 2018 GMC Sierra use?
The key fob typically uses a CR2032 coin cell battery, but you should confirm by checking your owner’s manual or the battery itself.
6. How do I know which key fob is causing the B310E code?
Your GMC’s diagnostic system will identify the specific transmitter (e.g., Transmitter 7). You can test each fob to find the one that isn’t functioning properly.
7. Can a malfunctioning key fob drain the car’s battery?
While rare, a malfunctioning key fob could cause excessive communication with the vehicle, potentially draining the car battery over time.
8. Can I clear the B310E code without fixing the problem?
You can clear the code using a scan tool, but it will likely return if the underlying issue (e.g., low battery in the key fob) isn’t resolved.
9. Is it safe to drive with the B310E code active?
Yes, it’s safe to drive, but you may experience issues with keyless entry or starting the vehicle if the key fob battery is completely dead.
10. Do I need to reprogram the key fob after replacing the battery?
No, generally, replacing the battery does not require reprogramming. However, if the fob still doesn’t work, reprogramming may be necessary.
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