Oil Pump Disassemble

WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Oil Pump Cover Bolts

GM65055

Courtesy of GENERAL MOTORS CORP.

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 2: View Of Oil Pump & Cover

GM65057

Courtesy of GENERAL MOTORS CORP.

Remove the oil pump cover.

Fig 3: View Of Oil Pump Drive Gear

GM65058

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Mark or identify the gears for assembly. Refer to Separating Parts .

Remove the drive gear.

Fig 4: View Of Oil Pump Driven Gear

GM65060

Courtesy of GENERAL MOTORS CORP.

Remove the driven gear.

Fig 5: View Of Oil Pump Pressure Relief Valve Plug

GM65064

Courtesy of GENERAL MOTORS CORP.

Remove the pressure relief valve plug.

Fig 6: View Of Oil Pump Pressure Relief Valve Spring

GM65068

Courtesy of GENERAL MOTORS CORP.

Remove the pressure relief valve spring.

Fig 7: View Of Oil Pump Pressure Relief Valve

GM65076

Courtesy of GENERAL MOTORS CORP.

Remove the pressure relief valve.
Inspect the oil pump components. Refer to Oil Pump Cleaning and Inspection .