Remove the engine coolant temperaturesensor-(1).
Remove the thermostat and water feed pipe retainingbolts.
Note:Twist the water feed pipe while pulling to remove it from thewater pump cover.
Remove the thermostat housing and water feedpipe-(1) from the water pump cover.Remove the water pump retaining bolts. Be sure to remove thebolt that goes through the front of the engine block.Remove the water pump assembly-(1).
#04-06-04-047L: TOP TIER Detergent Gasoline (Deposits, Fuel Economy, No Start, Power, Performance, Stall Concerns) – U.S. Only - (Nov 7, 2013)
Subject:TOP TIER Detergent Gasoline (Deposits, Fuel Economy, No Start, Power, Performance,Stall Concerns) – U.S. OnlyModels: 2014 and Prior GM Cars and Trucks (U.S. Only) This bulletin has been revised to add the 2014 model year. Please discard CorporateBulletin Number 04-06-04-047K. In Canada ...