B0540 HUMMER – Speedometer Circuit

 

B0540 HUMMER Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B0540 HUMMER Possible Causes

 

Faulty Instrument Panel Cluster (IPC),Instrument Panel Cluster (IPC) harness is open or shorted,Instrument Panel Cluster (IPC) circuit poor electrical connection,Faulty Powertrain Control Module (PCM)

 

B0540 HUMMER Description

 

The Instrument Panel Cluster (IPC) monitors the vehicle speed signal to determine the speedometer position. If the IPC determines the vehicle speed signal voltage is out of the normal operating range, a Diagnostic Trouble Code (DTC) will set.