AutoCodes – GMC – B3111 2017 GMC Sierra

B3111 2017 GMC Sierra Code - Keyless Entry Transmitter 3 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: B3111 2017 GMC Sierra indicates Keyless Entry Transmitter 3 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.

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Code Popularity 248

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 Jun 11, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3111 2017 GMC Sierra Description

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. The Remote Control Door Lock Receiver sends this to the Body Control Module (BCM) to perform the requested function. The Diagnostic Trouble Code (DTC) sets when three consecutive low-battery signals are received from the same transmitter.

OBDII Code B3111 2017 GMC Sierra - Keyless Entry Transmitter 3 Battery - AutoCodes.com — B3111 2017 GMC Sierra Code - Keyless Entry Transmitter 3 Battery

What does this mean?

What are the Possible Causes of the DTC B3111 2017 GMC Sierra?

Low Keyless Entry Transmitter Battery
Faulty Keyless Entry Transmitter

How to Fix the DTC B3111 2017 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 B3111 2017 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 B3111 2017 GMC Sierra code?

Need more information on how to fix the B3111 2017 GMC Sierra code? Get Access to Factory Service Manuals

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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 B3111 2017 GMC Sierra Code

1. What does the OBDII code B3111 mean on a 2017 GMC Sierra?

B3111 indicates an issue with the Keyless Entry Transmitter 3 Battery, typically related to a low or dead battery in the third key fob.

2. What are the common symptoms of code B3111 in a 2017 GMC Sierra?

Symptoms include the key fob not working to lock/unlock doors, inability to start the vehicle with that specific key fob, or a dashboard message indicating a low key fob battery.

3. What causes the B3111 code to appear?

The most common cause is a low or depleted battery in the third key fob. Other causes may include poor battery contacts, a faulty key fob, or an issue with the vehicle's receiver module.

4. How do I fix the B3111 code on my 2017 GMC Sierra?

Replace the battery in the third key fob with a new one. Ensure proper installation and verify that the key fob works correctly after replacement.

5. What type of battery does the key fob for a 2017 GMC Sierra use?

The key fob typically uses a CR2032 lithium coin battery, but it's best to check your vehicle's manual or the markings on the old battery for confirmation.

6. How can I prevent the B3111 code from occurring again?

Regularly check and replace the key fob battery before it completely depletes. Keep a spare battery handy for convenience.

7. Can the B3111 code affect vehicle performance?

No, the code itself does not impact vehicle performance, but it can prevent keyless entry or starting if the affected key fob is the only one available.

8. How do I clear the B3111 code after replacing the key fob battery?

The code should clear on its own after the key fob is functioning properly. If it doesnâ€™t, you may need to use an OBDII scanner to manually clear it.

9. What if replacing the key fob battery doesnâ€™t fix the B3111 code?

If the issue persists, inspect the key fob for damage, check for poor battery contacts, or test the vehicleâ€™s receiver module for faults.

10. Can I still start my 2017 GMC Sierra if the key fobâ€™s battery is dead?

Yes, the key fob typically has a backup method to start the vehicle, such as placing it in a specific slot or pressing it against the start button. Check your ownerâ€™s manual for details.