Oil Pump Cleaning and Inspection
WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect the bearing on the flange for excessive wear or damage.
- Inspect the machined surfaces for scratches or nicks that may cause a fluid leak.
- Thoroughly flush the oil pump assembly (10) with clean transmission fluid through the pump inlet and outlet passages.
- Drain excess fluid from the oil pump assembly.
IMPORTANT:
While flushing, rotate the oil pump rotor with the oil pump drive shaft. Rotating the oil pump rotor flushes clean fluid through the oil pump.