P0821 GMC Gear Lever X Position Circuit
Possible causes
– Faulty Gear Lever X Position Sensor
– Gear Lever X Position Sensor harness is open or shorted
– Gear Lever X Position Sensor circuit poor electrical connection
– Gear Lever X Position Sensor harness is open or shorted
– Gear Lever X Position Sensor circuit poor electrical connection
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,