Oil Pump, Pump Screen and Deflector Installation

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 & Bolt

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Inspect the oil pump and engine block oil gallery passages. These surfaces must be clear and free of debris or restrictions.

Align the splined surfaces of the crankshaft sprocket and the oil pump drive gear and install the oil pump.
Install the oil pump onto the crankshaft sprocket until the pump housing contacts the face of the engine block.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the oil pump bolts.
Tighten: Tighten the oil pump bolts to 25 N.m (18 lb ft).

Fig 2: View Of Crankshaft Oil Deflector

Courtesy of GENERAL MOTORS CORP.

Install the crankshaft oil deflector.

Fig 3: View Of Oil Pump Screen, Bolt, Nuts & O-Ring Seal

Courtesy of GENERAL MOTORS CORP.

Lubricate a NEW oil pump screen O-ring seal (406) with clean engine oil.
Install the NEW O-ring seal onto the oil pump screen.

IMPORTANT:

Push the oil pump screen tube completely into the oil pump prior to tightening the bolt. Do not allow the bolt to pull the tube into the pump.
Align the oil pump screen mounting brackets with the correct crankshaft bearing cap studs.

Install the oil pump screen (407).
Install the oil pump screen bolt (405) and the deflector nuts (404).
Tighten:
1. Tighten the oil pump screen bolt to 12 N.m (106 lb in).
2. Tighten the crankshaft oil deflector nuts to 25 N.m (18 lb ft).