| All About OBDII Engine Codes
AutoCodes - GMC - B0263 GMC

B0263 GMC Code - Air Flow Control 6 Circuit

- Code Popularity: 1,536 Views
- Repair Importance Level: 1/3
- Repair Difficulty Level: 2/3
Table of contents
By - Updated Mar 10, 2021
Share on Facebook   Share on Twitter   Share on Linkedin

|Code B0263 GMC Possible Causes

  • Faulty Mode Actuator
  • Mode Actuator harness is open or shorted
  • Mode Actuator circuit poor electrical connection
  • Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module

|How do I Fix the Code B0263 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.

Does your GMC have Safety Recalls? → Check here

|What is the Cost to Diagnose the Code B0263 GMC?

Labor: 1.0

The cost of diagnosing the B0263 GMC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

|What are Code B0263 GMC Possible Symptoms?

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

|Code B0263 GMC Description

Stepper motors are used for temperature regulation, air distribution control and recirculation door control. With the switches and dials on the HVAC controls, air temperature door position, mode door position and recirculation door position can be selected. The selected values are passed to the Heating, Ventilation, and Air Conditioning (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 B0263 GMC - Air Flow Control 6 Circuit -
B0263 GMC Code - Air Flow Control 6 Circuit

|Need More Information on the B0263 GMC Code?

Need more information on how to fix the B0263 GMC code? Get Access to Factory Service Manuals

|Need Help with the B0263 GMC Code?

Get the B0263 GMC code diagnosed by a professional: Find a repair shop in your area

|Code B0263 GMC comments

Help us improve Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the B0263 GMC code? Have you replaced any parts?
Any information is appreciated. Thanks