P1253 GMC VTEC System Malfunction
Possible causes
– Engine oil level low
– Low engine oil pressure
– Blocked oil passage
– Faulty VCT oil control valve
– Low engine oil pressure
– Blocked oil passage
– Faulty VCT oil control valve
Tech description
If the P1253 GMC is present, start by checking the engine oil level and condition. Change engine oil and filter if necessary with factory recommended oil weight.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1253 GMC Description
The VTEC system, in conjuction with the engine control module (ECM)/powertrain control module (PCM), activates the VTEC solenoid valve to control oil pressure to the VTEC mechanism that is installed in the valve system to switch valve timing between Low and High.
If the VTEC solenoid valve has an open or short circuit, a DTC is stored.
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,