Prior to installing the water pump, read the entireprocedure. Pay special attention to avoid part damage and to ensureproper sealing.

Install the water pump assembly-(1).Install the water pump bolts. Finger tighten thebolts.
Caution:Refer toFastener Caution.
Tighten the water pump bolts to25-Y-(18-lb-ft).Apply sealant to the water pump drain plug. Refer toAdhesives, Fluids, Lubricants, and Sealers.Install the water pump drain plug, if necessary. Tighten to20-Y-(15-lb-ft).
Install the water feed tube-(1).Lubricate the feed tube O-ring withantifreeze.Install the water feed tube by twisting and pushing towardthe water pump. Take care not to tear or damage theO-ring.Install the thermostat housing-(2) to block boltsand stud and tighten to10-Y-(89-lb-in).

Install the engine coolant temperature sensor-(1)by hand.Tighten the engine coolant temperature sensor and tighten to20-Y-(15-lb-ft).
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GM studies indicate that plugged or restricted transmission oil coolers and pipescause insufficient transmission lubrication and elevated operating temperatures whichcan lead to premature transmission failure. Many repeat repair cases could have beenprevented by following published procedures for tr ...