B3109 2017 GMC Sierra Code - Keyless Entry Transmitter 1 Battery
Quick Answer
The B3109 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the Keyless Entry Transmitter 1 Battery. Common causes include Low or dead battery in the keyless entry transmitter, Battery corrosion affecting the key fob's performance, Faulty key fob circuitry. 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
- B3109 2017 GMC Sierra indicates Keyless Entry Transmitter 1 Battery.
- Common causes
- Common causes include Low or dead battery in the keyless entry transmitter, Battery corrosion affecting the key fob's performance, Faulty key fob circuitry.
- 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 B3109 2017 GMC Sierra Description
The B3109 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the Keyless Entry Transmitter 1 Battery. This code indicates that there is an issue with the battery in the keyless entry transmitter, which is the device that allows you to remotely unlock and lock your vehicle. The keyless entry transmitter sends a signal to the vehicle's receiver, which then activates the door locks. If the battery in the transmitter is low or dead, it can lead to difficulties in unlocking or locking the vehicle remotely.
Common Causes of B3109 2017 GMC Sierra
- Low or dead battery in the keyless entry transmitter
- Battery corrosion affecting the key fob's performance
- Faulty key fob circuitry
- Physical damage to the key fob affecting its functionality
- Environmental factors such as extreme temperatures affecting the battery's performance
Symptoms of B3109 2017 GMC Sierra
- Difficulty unlocking or locking the vehicle remotely
- Key fob not responding to button presses
- Inconsistent performance of the keyless entry system
- Warning message on the vehicle's dashboard indicating a keyless entry transmitter issue
How to Fix B3109 2017 GMC Sierra
- Obtain a replacement battery for the keyless entry transmitter
- Open the key fob using a small flathead screwdriver or a coin
- Remove the old battery from the key fob
- Insert the new battery into the key fob, ensuring the correct orientation
- Close the key fob and test the functionality by unlocking and locking the vehicle remotely
Cost to Fix B3109 2017 GMC Sierra
The cost of replacing the battery in a keyless entry transmitter typically ranges from $5 to $15 for the battery itself. If you choose to replace the battery yourself, there will be no additional labor costs. However, if you prefer to have a professional handle the replacement, labor costs can vary depending on the shop's hourly rate. In general, the total cost for this repair should not exceed $50, making it a relatively affordable fix for restoring the keyless entry system's functionality.
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Frequently Asked Questions about B3109 2017 GMC Sierra Code
What does OBDII code B3109 mean for a 2017 GMC Sierra?
Code B3109 indicates an issue with the battery in Keyless Entry Transmitter 1, commonly related to low voltage or failure.
What are the symptoms of code B3109 in a 2017 GMC Sierra?
Symptoms may include difficulty unlocking/locking doors, failure to start the truck remotely, or reduced range of the key fob.
What causes code B3109 in a 2017 GMC Sierra?
The most common cause is a weak or dead battery in Keyless Entry Transmitter 1. Other causes may include damage to the key fob or issues with the vehicle's receiver module.
How do you fix code B3109 in a 2017 GMC Sierra?
Replace the battery in Keyless Entry Transmitter 1 with a new one. If issues persist, inspect the key fob for physical damage or reprogram it.
How do you replace the battery in Keyless Entry Transmitter 1?
Open the key fob by gently prying it apart, remove the old battery, and replace it with a compatible battery, typically a CR2032 or CR2025.
Can code B3109 affect vehicle performance?
This code does not affect engine or driving performance but may prevent remote functions like unlocking doors or remote start.
How do you clear code B3109 after fixing the issue?
Code B3109 usually clears automatically after replacing the battery. If not, use an OBDII scanner to clear the code manually.
How often should you replace the key fob battery in a 2017 GMC Sierra?
Typically, key fob batteries last 1-3 years, depending on usage. Replace the battery if you notice reduced range or inconsistent functionality.
What happens if the key fob is damaged while replacing the battery?
If the key fob is damaged, it may need to be replaced or reprogrammed by a dealership or qualified technician.
Can a faulty receiver module cause code B3109?
Yes, a malfunctioning receiver module in the vehicle could prevent communication with the key fob, but this is less common than a weak battery.
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