Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the electric motor that helps your brakes work. It's like when a toy's battery is too low to make it move properly.
The code C0584 is triggered when the brake booster motor's electrical circuit has a low voltage issue, which can affect the brake assist function.
The C0584 code indicates a low voltage condition in the U-V-W circuit of the brake booster motor B. This circuit is responsible for providing the necessary electrical power to the motor that assists in brake application. A low voltage condition can result from wiring issues, a failing motor, or a problem with the control module.
• Reduced braking performance
• Brake warning light on the dashboard
• Unusual noises when braking
• Faulty brake booster motor
• Damaged or corroded wiring or connectors
• Faulty control module
Brake Booster: A component that uses vacuum or electric power to help apply the brakes.
U-V-W Circuit: A three-phase electrical circuit used to power electric motors.
• Check the brake booster motor wiring for damage or corrosion.
• Measure the voltage at the motor's terminals.
• Inspect the control module for faults.
• Repair or replace damaged wiring or connectors.
• Replace the brake booster motor if faulty.
• Replace or reprogram the control module if necessary.
• Multimeter
• OBD-II scanner
• Basic hand tools
$200 - $600
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly inspect brake system wiring.
• Ensure connectors are clean and secure.
• Follow scheduled maintenance for brake components.
Electrical Circuit Issue
• Do not ignore the brake warning light.
• Get the vehicle inspected by a professional if braking feels different.
• Avoid driving the vehicle if braking performance is significantly reduced.
Check with the vehicle manufacturer for warranty coverage on brake system components.
This code has been more common in vehicles with electric brake boosters introduced in the last decade.
High – Affects braking performance, which is critical for vehicle safety.
Driving with impaired brakes can be dangerous and may violate traffic safety laws.
• Vehicle ignition on
• Brake pedal applied
The brake booster motor is typically located near the brake master cylinder in the engine bay.
Q: Can I drive with a C0584 code?
A: It's not recommended as it affects braking performance. Have it checked as soon as possible.
Q: How do I reset the C0584 code?
A: Fix the underlying issue first, then use an OBD-II scanner to clear the code.
Pro · Four-system diagnostics
A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.
Chassis and ABS faults usually need a scanner that can read brake-system data directly.
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Universal · Torque wrench
Useful when reassembly torque matters for wheel, suspension, and under-hood fasteners.
Useful when wheel, hub, or suspension hardware needs correct reassembly torque.
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Universal · Drive-on ramps
Helpful for safer access underneath the vehicle during exhaust, EVAP, and underbody inspection work.
Helpful for safer access during underbody inspection work.
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