Oil Pump: Notes
WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Do not use an impact driver to remove or install oil pump driven gear nut. Use of an impact driver may shear oil pump drive gear pin in crankshaft.