P0579 Chevrolet Speed Control Switch 1 Performance Condition

P0579 Chevrolet Speed Control Switch 1 Performance Condition

Possible causes
– Faulty Cruise Control Function Switch
– Cruise Control Function Switch harness is open or shorted
– Cruise Control Function Switch circuit poor electrical connection
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Cruise control system inoperative