DTC C120 GMC

Up Down Shift Switch-Circuit Open

Up Down Shift Switch-Circuit Open

Description

The Paddle Shifters are integral to the Remote Radio Switches. The Paddle Shifters in the two Remote Radio Switch units are normally open MUX switches that are hard wired to the Right Steering Wheel Switch (Speed Control Switch). The Right Steering Wheel Switch (Speed Control Switch) provides a 5 volt signal and return circuit to the switches. Both switches share the signal and return circuits. The Right Steering Wheel Switch senses the status of the switches by reading the voltage drop of the signal circuit.

Video Guide

Duration: PT3M51S | Uploaded: 2020-06-20

Diagnostic Info

  • DTC Code: C120
  • Brand: GMC
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