GM C code definitions

GM C code definitions

Here are definitions for some C chassis codes from the transfer case on GM vehicles.

C0300: REAR SPEED SENSOR MALFUNCTION
C0305: FRONT SPEED SENSOR MALFUNCTION
C0306: MOTOR A OR B CIRCUIT
C0321: TRANSFER CASE LOCK CIRCUIT
C0327: ENCODER CIRCUIT MALFUNCTION
C0359: FOUR WHEEL DRIVE LOW RANGE (4LO) DISCRETE OUTPUT CIRCUIT
C0374: GENERAL SYSTEM MALFUNCTION
C0379: FRONT AXLE SYSTEM
C0550: ECU MALFUNCTION

© 2012 Rick Muscoplat