AutoCodes - OBDII Code List - B023A GMC

B023A GMC - HVAC Actuators Supply Voltage

Repair Importance Level: 1/3
Repair Difficulty Level: 2/3
What does this mean?
Table of contents

B023A GMC Possible Causes

What does this mean?
  • Faulty Heating, Ventilation, and Air Conditioning (HVAC) Actuators
  • HVAC Actuators harness is open or shorted
  • HVAC Actuators circuit poor electrical connection
  • Faulty HVAC Control Module

How do I fix code B023A GMC?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
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Cost of diagnosing the B023A GMC code

Labor: 1.0

The cost of diagnosing the B023A GMC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

B023A GMC Description

Stepper motors are used for temperature regulation, air distribution control and recirculation door control. With the switches and dials on the Heating, Ventilation, and Air Conditioning (HVAC) controls, air temperature door position, mode door position and recirculation door position can be selected. The selected values are passed to the HVAC Control Module via serial data. The HVAC control module supplies a 12 V reference voltage to the stepper motors and energizes the 4 stepper motor coils with a pulsed ground signal. The stepper motors move the appropriate doors into the calculated positions, in order to reach the desired positions.
OBDII Code B023a Gmc - HVAC Actuators Supply Voltage - AutoCodes.com

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