GM Service Manual Online
For 1990-2009 cars only

Engine Coolant Thermostat Housing Replacement LTD/U20XE, LE5/U24XE


Object Number: 2019950  Size: SH

Callout

Component Name

Preliminary Procedures

  1. Raise the vehicle by its full height. Refer to Lifting and Jacking the Vehicle.
  2. Drain the cooling system. Refer to Cooling System Draining and Filling.
  3. Remove the engine coolant temperature sensor. Refer to Engine Coolant Temperature Sensor Replacement.
  4. Release the radiator outlet hose. Refer to Radiator Outlet Hose Replacement.
  5. Release the radiator surge tank engine hose. Refer to Radiator Surge Tank Engine Hose Replacement.
  6. Release the heater outlet hose. Refer to Heater Outlet Hose Replacement.
  7. Release the heater inlet hose. Refer to Heater Inlet Hose Replacement.

1

Engine Coolant Thermostat Housing Fastener (Qty: 3)

Caution: Refer to Fastener Caution in the Preface section.

Tighten
10 N·m (89 lb in)

2

Engine Coolant Thermostat Housing