Oil Pump Assemble

WARNING: This page is about a different car, the 2003 GMC Envoy XL and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Prior to assembling the oil pump, coat all wear or internal surfaces with clean engine oil.

Install the driven gear into the pump housing.
Install the driven gear with the orientation mark facing the pump cover.

Fig 1: Installing Driven Gear Into Pump Housing
Courtesy of GENERAL MOTORS CORP.
Install the drive gear into the pump housing.

Fig 2: Installing Drive Gear Into Pump Housing
Courtesy of GENERAL MOTORS CORP.
Install the oil pump cover.

Fig 3: Installing Oil Pump Cover
Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Install the pump cover bolts.
Tighten

Tighten the oil pump cover bolts to 12 N.m (106 lb in).

Fig 4: Installing Pump Cover Bolts
Courtesy of GENERAL MOTORS CORP.
Install the regulator valve.

Fig 5: Installing Regulator Valve
Courtesy of GENERAL MOTORS CORP.
Install a NEW regulator valve spring.

Fig 6: Installing Regulator Valve Spring
Courtesy of GENERAL MOTORS CORP.
Install the pressure relief valve plug.
Tighten

Tighten the pressure relief valve plug to 12 N.m (106 lb in).
Inspect the oil pump for smoothness of operation by rotating the drive gear.

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