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
Diagnostic Info
- DTC Code: C120
- Brand: GMC