AutoCodes – Chevrolet – B3884 2014 Chevrolet Silverado

B3884 2014 Chevrolet Silverado Code - Center High Mounted Stop Lamp Circuit

Quick Answer

The brake pedal position sensor is used to sense the action of the driver's application of the brake pedal. Common causes include Faulty Center High Mounted Stop Lamp, Center High Mounted Stop Lamp harness is open or shorted, Center High Mounted Stop Lamp circuit poor electrical connection. 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 Chevrolet Silverado indicates Center High Mounted Stop Lamp Circuit.
Common causes: Common causes include Faulty Center High Mounted Stop Lamp, Center High Mounted Stop Lamp harness is open or shorted, Center High Mounted Stop Lamp circuit poor electrical connection.
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 198

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 16, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B3884 2014 Chevrolet Silverado Description

The brake pedal position sensor is used to sense the action of the driver's application of the brake pedal. The brake pedal position sensor provides an analog voltage signal that will increase as the brake pedal is applied. The Body Control Module (BCM) provides a low reference signal and a 5 V reference voltage to the brake pedal position sensor. When the variable signal reaches a voltage threshold indicating the brakes have been applied, the BCM energizes the stop lamp relay by applying a voltage to the stop lamp relay control circuit. When the stop lamp relay is energized, the relay switch contacts close, and battery voltage is applied to the Center High Mounted Stop Lamp (CHMSL) control circuit which illuminates the CHMSL. The Diagnostic Trouble Code (DTC) will be set when the BCM detects a malfunction in the stop lamp relay control circuit.

OBDII Code B3884 2014 Chevrolet Silverado - Center High Mounted Stop Lamp Circuit - AutoCodes.com — B3884 2014 Chevrolet Silverado Code - Center High Mounted Stop Lamp Circuit

What does this mean?

What are the Possible Causes of the DTC B3884 2014 Chevrolet Silverado?

Faulty Center High Mounted Stop Lamp
Center High Mounted Stop Lamp harness is open or shorted
Center High Mounted Stop Lamp circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B3884 2014 Chevrolet Silverado?

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 does this mean?

Code Tech Notes

B3884:01 Center High Mounted Stop Lamp Circuit Short to Battery
B3884:02 Center High Mounted Stop Lamp Circuit Short to Ground
B3884:04 Center High Mounted Stop Lamp Circuit Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B3884 2014 Chevrolet Silverado 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 B3884 2014 Chevrolet Silverado code?

Need more information on how to fix the B3884 2014 Chevrolet Silverado 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 B3884 2014 Chevrolet Silverado Code

1. What does OBDII code B3884 for a 2014 Chevrolet Silverado mean?

The code B3884 indicates a problem with the Center High Mounted Stop Lamp Circuit in the vehicle.

2. What are the common symptoms of OBDII code B3884 in a 2014 Chevrolet Silverado?

Common symptoms include the center high-mounted stop lamp not working properly, flickering, or staying on constantly.

3. What are the possible causes of OBDII code B3884 in a 2014 Chevrolet Silverado?

Potential causes include a faulty stop lamp assembly, wiring issues, a defective brake light switch, or a problem with the vehicle's body control module.

4. How can I diagnose the Center High Mounted Stop Lamp Circuit issue in my 2014 Chevrolet Silverado?

To diagnose the problem, start by checking the stop lamp bulbs, fuse, and wiring connections. Use a multimeter to test for continuity and voltage at various points in the circuit.

5. How can I repair OBDII code B3884 in my 2014 Chevrolet Silverado?

Repair steps may include replacing the center high-mounted stop lamp assembly, repairing damaged wiring, replacing the brake light switch, or resetting the body control module.

6. Can I continue driving my 2014 Chevrolet Silverado with OBDII code B3884?

It is not recommended to drive the vehicle with a malfunctioning center high-mounted stop lamp, as it can compromise safety by reducing visibility to other drivers.

7. Is it possible to reset OBDII code B3884 in a 2014 Chevrolet Silverado without fixing the underlying issue?

While clearing the code may temporarily turn off the warning light, it will likely reappear if the root cause of the problem is not addressed.

8. How much does it typically cost to repair OBDII code B3884 in a 2014 Chevrolet Silverado?

The cost of repairs can vary depending on the specific cause of the issue, but it may range from a few hundred to a few thousand dollars, including parts and labor.

9. Can a DIY enthusiast fix OBDII code B3884 in a 2014 Chevrolet Silverado?

Some repairs related to the Center High Mounted Stop Lamp Circuit may be DIY-friendly, such as replacing bulbs or fuses. However, more complex issues may require professional diagnosis and repair.

10. How can I prevent OBDII code B3884 from recurring in my 2014 Chevrolet Silverado?

To prevent the code from coming back, perform regular maintenance checks on the vehicle's lighting system, including inspecting bulbs, wiring, and connections for any signs of wear or damage.