Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- C028A 01: Hand Brake Motor Circuit Short to Battery
- C028A 02: Hand Brake Motor Circuit Short to Ground
- C028A 04: Hand Brake Motor Circuit Open Circuit
- C028A 08: Hand Brake Motor Circuit Performance-Signal Invalid
- C028A 28: Hand Brake Motor Circuit Performance-Incorrect Frequency
To diagnose the C028A Chevrolet code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.
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 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 will also diagnose the internal hand brake motor circuit to verify it is functioning properly. The hand brake motor circuit is used to command motor operation, apply and release tension on the hand brake cable, which will apply and release the hand brake.
The hand brake will self diagnose the internal Hand brake Motor Circuit. This circuit is used to drive the motor, which pulls on the hand brake cable, ultimately applying and releasing the hand brake.
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