Why do I get code c0379 on my Silverado Sierra?

When the TCCM grounds the light blue wire the actuator locks the axle. If either circuit is open, grounded, or shorted to voltage you will get that code. Fast test: Key ON engine OFF and 2WD selected use a meter from battery ground to test for 12V at the brown wire, then the light blue wire.

What happens when a p0306 misfire is detected?

The system is designed in this fashion to alert the driver that an engine misfire of this degree can be harmful to the catalytic converter and other engine components. Once the misfire becomes more consistent and severe, a P0306 will be stored and constant MIL illumination will occur.

What to do when your GMC Sierra stops running?

If you have fuel pressure after the above tests pull a spark plug and check for spark. If you don’t have spark check the cam position sensor in the distributor. If you have spark with no pressure it is the pump.

What does p0306 mean on a fuel pump?

A code P0306 may mean that one or more of the following has happened: Bad spark plug (s), spark plug wires, or spark plug boots Malfunctioning fuel delivery system (fuel pump, fuel pump relay, fuel injectors, or fuel filter)

How much does it cost to diagnose a c0306 code?

The cost of diagnosing the C0306 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.

What does DTC for c0306 transfer case mean?

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. Need more information on how to fix the C0306 code?

How much does it cost to fix a c0306 motor?

The cost of diagnosing the C0306 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. The transfer case motor is a bi-directional, permanent magnet, D.C. motor.