Fits: 2003 thru 2010 Chevy Silverado/GMC Sierra 2500HD/3500HD LB7/LLY/LBZ/LMM Duramax Diesel

OEM GM replacement engine oil pressure sensor. If you're getting no oil pressure or erratic/false readings on your dash and you have already ruled out the wiring and stepper motor, it is likely needs a new pressure sensor.