Oil Pump Disassemble

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

Important: The internal parts of the oil pump assembly are not serviced separately, excluding the spring. If the oil pump components are worn or damaged, replace the oil pump as an assembly.

Remove the oil pump cover bolts.

Fig 1: Removing Oil Pump Cover Bolts
Courtesy of GENERAL MOTORS CORP.
Remove the oil pump cover.

Fig 2: Removing Oil Pump Cover
Courtesy of GENERAL MOTORS CORP.

Important: Mark or identify the gears for assembly. Refer to Separating Parts .
Remove the drive gear.

Fig 3: Removing Drive Gear
Courtesy of GENERAL MOTORS CORP.
Remove the driven gear.

Fig 4: Removing Driven Gear
Courtesy of GENERAL MOTORS CORP.
Remove the pressure relief valve plug.

Fig 5: Removing Pressure Relief Valve Plug
Courtesy of GENERAL MOTORS CORP.
Remove the pressure relief valve spring.

Fig 6: Removing Pressure Relief Valve Spring
Courtesy of GENERAL MOTORS CORP.
Remove the pressure relief valve.
Inspect the oil pump components. Refer to Oil Pump Cleaning and Inspection .

Fig 7: Removing Pressure Relief Valve
Courtesy of GENERAL MOTORS CORP.