P0590 GMC Speed Control Multiplexed Switch Performance
Possible causes
– Faulty Speed Control Switch
– Speed Control Switch harness is open or shorted
– Speed Control Switch circuit poor electrical connection
– Speed Control Switch harness is open or shorted
– Speed Control Switch circuit poor electrical connection
What about the obd code?
The Steering Column Control Module (SCCM) has detected that the Speed Control Switch 2 is not operating correctly
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
GMC Vehicle:GMC Acadia,GMC Canyon,GMC Envoy,GMC Savana 1500,GMC Savana 2500,GMC Savana 3500,GMC Sierra 1500,GMC Sierra 2500 HD,GMC Sierra 3500 HD,GMC Terrain,GMC Yukon,GMC Yukon XL 1500,GMC Yukon XL 2500,