B3884 2018 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 2018 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.
Code B3884 2018 Chevrolet Silverado Description
What are the Possible Causes of the DTC B3884 2018 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 2018 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.
Code Tech Notes
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 2018 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 2018 Chevrolet Silverado code?
Need more information on how to fix the B3884 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B3884 2018 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B3884 2018 Chevrolet Silverado Code
1. What does the OBDII code B3884 mean on a 2018 Chevrolet Silverado?
The B3884 code indicates an issue with the Center High Mounted Stop Lamp (CHMSL) circuit, such as a fault in the wiring, bulb, or control module.
2. What are the common symptoms of the B3884 code in a 2018 Chevrolet Silverado?
Symptoms may include the center high-mounted stop lamp not working, a warning light on the dashboard, or other brake light issues.
3. What causes the B3884 code to appear on a 2018 Chevrolet Silverado?
Common causes include a burned-out CHMSL bulb, damaged wiring, a faulty lamp assembly, or a malfunctioning Body Control Module (BCM).
4. Can I still drive my 2018 Chevrolet Silverado with the B3884 code?
Yes, but it’s not recommended as the CHMSL is a safety feature for braking visibility, and driving without it may increase the risk of an accident.
5. How do I fix the B3884 code on a 2018 Chevrolet Silverado?
Repairs may involve replacing the CHMSL bulb, fixing damaged wiring, or diagnosing and replacing a faulty BCM if necessary.
6. How do I check for wiring issues in the CHMSL circuit?
Inspect the wiring for visible damage, corrosion, or loose connections, and use a multimeter to verify proper voltage and continuity.
7. Does the B3884 code require reprogramming the Body Control Module (BCM)?
Reprogramming the BCM is not always necessary, but if the module is faulty and replaced, it may need to be reprogrammed by a qualified technician.
8. Can a blown fuse cause the B3884 code on a 2018 Chevrolet Silverado?
Yes, a blown fuse in the brake light or CHMSL circuit can trigger this code. Check and replace any blown fuses as needed.
9. How much does it cost to fix the B3884 code on a 2018 Chevrolet Silverado?
Costs vary depending on the issue, ranging from $10–$20 for a new bulb to several hundred dollars for BCM replacement or wiring repairs.
10. Can a bad CHMSL assembly trigger the B3884 code?
Yes, a faulty CHMSL assembly, such as water intrusion or internal damage, can cause the code to appear and should be replaced if defective.
Discuss the causes and fixes for B3884 2018 Chevrolet Silverado OBDII Code
Code B3884 2018 Chevrolet Silverado comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
