AutoCodes – GMC – C028F GMC

C028F GMC Code - Hand Brake Solenoid Actuator Circuit

Quick Answer

The hand brake control module has an internal motor, apply actuator, release actuator, and temperature sensor. Common causes include Faulty Hand Brake Solenoid Actuator, Hand Brake Solenoid Actuator harness is open or shorted, Hand Brake Solenoid Actuator 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: C028F GMC indicates Hand Brake Solenoid Actuator Circuit.
Common causes: Common causes include Faulty Hand Brake Solenoid Actuator, Hand Brake Solenoid Actuator harness is open or shorted, Hand Brake Solenoid Actuator 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 2,325

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 12, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code C028F GMC Description

The hand brake control module has an internal motor, apply actuator, release actuator, and temperature sensor. The hand brake control module also contains the logic for applying and releasing the hand brake when commanded by the hand brake control switch. When the hand brake control module receives a signal from the switch the internal circuit board temperature is checked to verify it is within operating range before the control module performs the requested operation. The hand brake control module contains an internal hand brake solenoid actuator, and performs diagnostics on the solenoid actuator circuitry to verify it is functioning properly

OBDII Code C028F GMC - Hand Brake Solenoid Actuator Circuit - AutoCodes.com — C028F GMC Code - Hand Brake Solenoid Actuator Circuit

What does this mean?

What are the Possible Causes of the DTC C028F GMC?

Faulty Hand Brake Solenoid Actuator
Hand Brake Solenoid Actuator harness is open or shorted
Hand Brake Solenoid Actuator circuit poor electrical connection

How to Fix the DTC C028F GMC?

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

- C028F 01: Hand Brake Solenoid Actuator Circuit Short to Battery
- C028F 02: Hand Brake Solenoid Actuator Circuit Short to Ground
- C028F 08: Hand Brake Solenoid Actuator Circuit Performance-Signal Invalid

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C028F GMC 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.

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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 C028F GMC Code

What does the OBDII code C028F mean for GMC vehicles?

The OBDII code C028F refers to a malfunction in the Hand Brake Solenoid Actuator Circuit, indicating an issue with the circuit that controls the hand brake solenoid.

What are common symptoms of the C028F code?

Common symptoms include the hand brake warning light being illuminated on the dashboard, difficulty in engaging or releasing the hand brake, and erratic braking performance.

What could cause the C028F code to trigger?

Causes may include a faulty hand brake solenoid, damaged wiring or connectors in the actuator circuit, or issues with the vehicle's electronic control unit (ECU).

How can I diagnose the C028F code?

To diagnose the code, check the hand brake solenoid for proper operation, inspect the wiring and connectors for damage, and use a scan tool to monitor live data for any irregularities in the actuator circuit.

What repairs are typically needed for a C028F code?

Repairs may involve replacing a faulty hand brake solenoid, repairing or replacing damaged wiring or connectors, or reprogramming the ECU if necessary.

Can I drive my GMC with a C028F code?

While it may be possible to drive the vehicle, it is not recommended as it can lead to compromised braking performance and safety issues. It's best to address the issue promptly.

How do I reset the C028F code after repairs?

The code can be reset using an OBDII scanner. After fixing the underlying issue, clear the code and test drive the vehicle to ensure it does not reappear.

Is the C028F code specific to certain GMC models?

The C028F code can occur in various GMC models, particularly those equipped with electronic hand brake systems, but the exact implementation may vary by model and year.

What should I do if the C028F code keeps coming back?

If the code keeps returning, further investigation is needed. Consider checking for intermittent wiring issues, ensuring proper installation of components, and diagnosing the ECU for faults.