B0424 on Chevrolet
Temperature Control Right Feedback Circuit / Actuator Range/Performance
B0424 on Chevrolet vehicles indicates temperature control right feedback circuit / actuator range/performance. Au7o has documented this code across 1 Chevrolet model — most commonly on Silverado 1500. This is a body/HVAC code indicating the climate control system detected a range or performance problem with the right-side (passenger) temperature blend-door actuator feedback circuit. The blend-door actuator is a small motor that positions a door to mix hot and cold air for the passenger side, and the module monitors a feedback signal to confirm the door reaches commanded positions. The computer saw the actuator failing to move correctly or the feedback signal falling outside the expected range. This is a comfort-related fault and does not affect drivability or safety. Typical repair costs on Chevrolet range from $100 to $600, depending on the specific model and root cause.
Common Causes of B0424
- •Failed passenger-side blend-door temperature actuator motor
- •Stuck, broken, or binding blend door
- •Wiring or connector fault in the actuator feedback circuit
- •Corroded or loose actuator electrical connector
- •Faulty HVAC control module
- •Low or unstable system voltage affecting the actuator
B0424 on Chevrolet by Model
Chevrolet Silverado 1500(1 issue)
- Blend Door / HVAC Actuator Failure Causing Clicking Dash Noise and Incorrect Airflow Temperature2000-2013
A frequent Silverado complaint is failure of the HVAC mode or blend door actuators, which causes repetitive clicking from behind the dash and leaves the system stuck on one vent mode or one temperature setting. Owners often notice one side blowing hot while the other stays cold, air stuck on defrost, or recirculation not functioning correctly. The small plastic gears inside the actuators wear or strip, and recalibration may not restore operation once gear damage occurs.
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View B0424 across all makes →Frequently Asked Questions
What does B0424 mean on Chevrolet?▼
B0424 stands for "Temperature Control Right Feedback Circuit / Actuator Range/Performance." This is a body/HVAC code indicating the climate control system detected a range or performance problem with the right-side (passenger) temperature blend-door actuator feedback circuit. The blend-door actuator is a small motor that positions a door to mix hot and cold air for the passenger side, and the module monitors a feedback signal to confirm the door reaches commanded positions. The computer saw the actuator failing to move correctly or the feedback signal falling outside the expected range. This is a comfort-related fault and does not affect drivability or safety. On Chevrolet specifically, this code is documented across 1 model.
What causes B0424 on Chevrolet vehicles?▼
Common causes on Chevrolet: Failed passenger-side blend-door temperature actuator motor, Stuck, broken, or binding blend door, Wiring or connector fault in the actuator feedback circuit, Corroded or loose actuator electrical connector, Faulty HVAC control module. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix B0424 on a Chevrolet?▼
Repair costs on Chevrolet range from $100 to $600, depending on the specific model and root cause.
Which Chevrolet models have B0424 documented?▼
Au7o has documented B0424 on 1 Chevrolet model: Silverado 1500.