B3884 2014 GMC Sierra Code - Center High Mounted Stop Lamp Circuit
Quick Answer
The B3884 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the Center High Mounted Stop Lamp (CHMSL) circuit. Common causes include Faulty CHMSL bulb, Wiring issues in the CHMSL circuit, Defective CHMSL module. 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
- B3884 2014 GMC Sierra indicates Center High Mounted Stop Lamp Circuit.
- Common causes
- Common causes include Faulty CHMSL bulb, Wiring issues in the CHMSL circuit, Defective CHMSL module.
- 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 B3884 2014 GMC Sierra Description
The B3884 diagnostic trouble code (DTC) for a 2014 GMC Sierra relates to the Center High Mounted Stop Lamp (CHMSL) circuit. This code indicates that there is a malfunction in the electrical circuit that controls the CHMSL, which is the third brake light mounted at the top of the rear of the vehicle. The CHMSL is an important safety feature as it provides additional visibility to drivers behind the vehicle when the brakes are applied.
Common Causes of B3884 2014 GMC Sierra
- Faulty CHMSL bulb
- Wiring issues in the CHMSL circuit
- Defective CHMSL module
- Problem with the body control module
Symptoms of B3884 2014 GMC Sierra
- CHMSL not illuminating when brakes are applied
- Warning light on the dashboard indicating a brake light malfunction
- Vehicle failing state inspection due to CHMSL not working
- Other drivers signaling that the CHMSL is not functioning properly
How to Fix B3884 2014 GMC Sierra
- Begin by visually inspecting the CHMSL bulb to check for any signs of damage or burnout. Replace the bulb if necessary.
- Inspect the wiring in the CHMSL circuit for any breaks, frays, or corrosion. Repair or replace any damaged wiring.
- Test the CHMSL module for proper functionality. Replace the module if it is found to be defective.
- Check the body control module for any faults related to the CHMSL circuit. Reset or replace the module as needed.
Cost to Fix B3884 2014 GMC Sierra
The cost of repairing the Center High Mounted Stop Lamp circuit can vary depending on the specific cause of the issue. On average, the cost of replacing a CHMSL bulb ranges from $10 to $30, while addressing wiring or module issues can cost between $50 to $200. Labor costs at auto repair shops typically range from $80 to $150 per hour. It is advisable to consult with a professional technician for an accurate cost estimate based on the specific diagnosis of the vehicle.
Tech Notes for B3884 2014 GMC Sierra
B3884:02 Center High Mounted Stop Lamp Circuit Short to Ground
B3884:04 Center High Mounted Stop Lamp Circuit Open
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Frequently Asked Questions about B3884 2014 GMC Sierra Code
1. What are the common symptoms of OBDII code B3884 in a 2014 GMC Sierra related to the Center High Mounted Stop Lamp Circuit?
- The common symptoms include the center high-mounted stop lamp not working, the brake lights not functioning properly, or dashboard warning lights indicating a fault.
2. What are the possible causes of OBDII code B3884 in a 2014 GMC Sierra?
- The code B3884 may be triggered by a faulty center high-mounted stop lamp, damaged wiring or connectors, a blown fuse, or a malfunctioning brake light switch.
3. How can I diagnose the issue causing OBDII code B3884 in my 2014 GMC Sierra?
- You can start by visually inspecting the center high-mounted stop lamp, checking the wiring and connectors for damage, testing the brake light switch, and using a diagnostic scanner to read the fault codes.
4. What are some repair tips for fixing OBDII code B3884 in a 2014 GMC Sierra?
- Repair tips include replacing the faulty center high-mounted stop lamp, repairing or replacing damaged wiring or connectors, checking and replacing any blown fuses, and testing or replacing the brake light switch if needed.
5. Can I continue driving my 2014 GMC Sierra with OBDII code B3884 triggered?
- It is not recommended to continue driving with the code B3884 triggered, as it indicates a potential issue with the brake lights, which are crucial for safety on the road.
6. How much does it typically cost to repair OBDII code B3884 in a 2014 GMC Sierra?
- The cost of repairing OBDII code B3884 can vary depending on the specific cause of the issue, but it may range from $50 for a simple fix like replacing a fuse to a few hundred dollars for more complex repairs involving wiring or components.
7. Can I reset OBDII code B3884 in my 2014 GMC Sierra without fixing the underlying issue?
- While you can clear the fault code using an OBDII scanner, it is important to address the underlying issue causing the code to prevent potential safety hazards and ensure the proper functioning of the brake lights.
8. Is OBDII code B3884 in a 2014 GMC Sierra a common issue?
- OBDII code B3884 related to the Center High Mounted Stop Lamp Circuit is not extremely common, but it can occur due to various factors like component failure, wiring issues, or electrical faults.
9. Are there any recalls or technical service bulletins related to OBDII code B3884 in a 2014 GMC Sierra?
- It is recommended to check with a GMC dealership or visit the National Highway Traffic Safety Administration's website to see if there are any recalls or technical service bulletins related to OBDII code B3884 in a 2014 GMC Sierra.
10. Can a DIY enthusiast with basic automotive knowledge repair OBDII code B3884 in a 2014 GMC Sierra?
- Depending on the specific cause of the issue, a DIY enthusiast with basic automotive knowledge may be able to address simpler fixes like replacing a fuse or the center high-mounted stop lamp. However, more complex wiring or component repairs may require professional assistance.
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