Low or No Oil Pressure
WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
The following can cause low or no oil pressure:
- Low oil level-fill to the full mark on the oil level indicator.
- Slow idle speed
- Incorrect or malfunctioning oil pressure switch-replace the oil pressure switch.
- Incorrect or malfunctioning oil pressure gauge-replace the oil pressure gauge.
- Improper oil viscosity or diluted oil
- Install oil of proper viscosity for expected temperature.
- Install new oil if it is diluted.
- The oil pump is worn or dirty-clean or replace the oil pump.
- The oil filter is plugged-replace the oil filter.
- The oil pickup screen is loose or plugged-replace the oil pickup screen.
- A hole in the oil pickup tube-replace the oil pickup tube.
- Excessive bearing clearance-replace the bearings.
- Cracked, porous, or plugged oil galleries-repair or replace the engine block.
- The gallery plugs are missing or improperly installed-install or repair as necessary.
- The pressure regulator valve is stuck.
- Check the pressure regulator valve for sticking in the bore.
- Check the bore for scoring and burrs.
- The camshaft is worn or poorly machined-replace the camshaft.
- Worn valve guides-repair as needed.