​ACDelco GM Original Equipment Engine Variable Valve Timing Solenoids regulate oil flow to the cam phasers that change the timing of the camshafts. The desired positions of the camshaft varies with engine speed and load and is calibrated for optimal engine performance, drive quality, and fuel economy. They are GM-recommended replacements for your vehicle’s original components. These original equipment solenoids have been manufactured to fit your specific GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
 
Features & Benefits:
Coated to protect against premature corrosion
Designed to match OEM calibration to provide the performance you expect from GM
GM-recommended replacement part for your GM vehicle’s original factory component
Offering the quality, reliability, and durability of GM OE
 
Good Maintenance Practices:
Keep engine oil and filter changed at intervals specified in vehicle information.
Properly test and diagnose oil control valves per General Motors service procedures to insure the proper component is being replaced.
 
Signs of Wear & Troubleshooting:
Illuminated check engine light (with presence of certain cam phasing or cam position correlation trouble codes)
Abnormally high electrical resistance or open circuit
Rough engine idle
Poor drive quality