C0306 GMC - Transfer Case Motor

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3    What is this?
Table of contents

C0306 GMC Possible Causes

  • Faulty Transfer Case Motor
  • Transfer Case Motor harness is open or shorted
  • Transfer Case Motor circuit poor electrical connection

How do I fix code C0306 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 C0306 GMC code

Labor: 1.0

The cost of diagnosing the C0306 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.

Possible Symptoms

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)

C0306 GMC Description

The transfer case motor is a bi-directional, permanent magnet, D.C. motor. When energized, through motor control A or motor control B, the ground is provided by the opposing motor control circuit and then grounded through the transfer case shift control module ground circuit, the motor, through a series of gears, rotates a shaft which moves the mode and range forks to shift the transfer case between the following ranges:
- 4HI
- The AUTO or the Adapt mode
- 2HI
- N
- 4LO
This DTC detects an open, short to voltage, or short to ground in the motor control A or motor control B circuits, or an open, or short to ground inside the motor.
OBDII Code C0306 Gmc - Transfer Case Motor - AutoCodes.com

More Information

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