Water Pump Installation

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

Tools Required

J 41240 an Clutch Remover and Installer

If reusing the fasteners, apply sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent, to the threads of the water pump bolts.
Install the water pump and the NEW water pump gaskets.

Fig 1: Installing Water Pump And New Water Pump Gaskets
Courtesy of GENERAL MOTORS CORP.

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

Tighten the water pump bolts to 45 N.m (33 lb ft).

Important: After that assembly, the water pump inlet hose clamp tangs, water pump end, must point forward and the upper tang should be level with the outside diameter of the water pump inlet hose.
Install the water pump inlet hose and the water pump inlet hose clamps.

Fig 2: Installing Water Pump Inlet Hose
Courtesy of GENERAL MOTORS CORP.
Install the fan and water pump pulley and bolts using the J 41240.

Fig 3: Installing Fan And Water Pump Pulley And Bolts
Courtesy of GENERAL MOTORS CORP.

Tighten

Tighten the fan and water pump pulley bolts to 25 N.m (18 lb ft).