The variable valve timing camshaft actuators may stick due to dirty engine oil or a faulty control solenoid. A sticking actuator may cause a rough idle and the Check Engine Light to illuminate. Our technicians tell us the engine oil should be checked to make sure it is clean and at the proper level before replacing any parts to correct this concern.
Car Problem Reports
Buick Rainier Sticking Camshaft Actuators Due to Dirty Oil or Faulty Control Solenoid
Buick Rainier Problem
Engine Affected: 4.2L 6 Cylinder
Average Mileage: 118,829 mi (87,000 mi - 150,658 mi)