Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
SOMETIMES LITTLE SLUGGISH. MOST TIME OK
Ok, code P0 128 is a weak thermostat. replacing the thermostat will correct this code. the thermostats are little difficult to replace on these vehicles takes a couple of hours to do. now the code P0014 usually indicates a problem with the exhaust camshaft actuator. in most cases the screens come of the hydraulic actuator causing the valve to stick. on the right front corner of the cylinder is the actuator, it has one connector and one bolt holding it place. remove the actuator and inspect the screens. there should be 3 screens on the act. if it it only has 2 screens replace the actuator. here is a picture of the actuator.
(2) Screen for Pressurized Oil from Oil Pump
(3) Screen for Retard Pressure to Camshaft Actuator