AutoCodes – GMC – B3112 2016 GMC Sierra

B3112 2016 GMC Sierra Code - Keyless Entry Transmitter 4 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
B3112 2016 GMC Sierra indicates Keyless Entry Transmitter 4 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 183
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 11, 2023
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Code B3112 2016 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 B3112 2016 GMC Sierra - Keyless Entry Transmitter 4 Battery - AutoCodes.com
B3112 2016 GMC Sierra Code - Keyless Entry Transmitter 4 Battery

What are the Possible Causes of the DTC B3112 2016 GMC Sierra?

  • Low Keyless Entry Transmitter Battery
  • Faulty Keyless Entry Transmitter

How to Fix the DTC B3112 2016 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 B3112 2016 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 B3112 2016 GMC Sierra code?

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Need Help with the Code?

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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 B3112 2016 GMC Sierra Code

1. What does OBDII code B3112 mean on a 2016 GMC Sierra?

Code B3112 indicates an issue with the battery in the keyless entry transmitter 4, such as being low or dead.

2. What are the symptoms of code B3112 in a 2016 GMC Sierra?

Common symptoms include the failure of the fourth keyless entry transmitter to lock or unlock the doors, start the vehicle remotely, or function properly.

3. What causes the B3112 code to appear?

The most common cause is a low or dead battery in the keyless entry transmitter 4. Other potential causes include a damaged key fob or communication issues between the fob and the vehicle.

4. How do I fix the B3112 code on my 2016 GMC Sierra?

Replace the battery in keyless entry transmitter 4. If the issue persists, check the transmitter for physical damage or reprogram it if necessary.

5. How do I replace the battery in the keyless entry transmitter?

Open the key fob using a small flathead screwdriver, remove the old battery, and install a new one. Ensure the replacement battery matches the recommended type (usually CR2032).

6. Can a damaged key fob cause the B3112 code?

Yes, physical damage to the key fob, such as cracked housing or water intrusion, can prevent it from functioning and trigger the B3112 code.

7. Will the B3112 code affect other key fobs on my 2016 GMC Sierra?

No, this code specifically relates to keyless entry transmitter 4. Other fobs should function normally unless they also experience issues.

8. Do I need to reprogram the key fob after replacing the battery?

In most cases, reprogramming is not necessary after replacing the battery. However, if the fob still doesn't work, reprogramming or further diagnostics may be required.

9. Can I clear the B3112 code without fixing the issue?

You can clear the code using an OBDII scanner, but it will likely return unless the underlying issue, such as a dead battery, is resolved.

10. How can I prevent the B3112 code from recurring?

Regularly check and replace the key fob battery as needed, avoid exposing the fob to extreme conditions, and handle it carefully to prevent damage.

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