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Dan
Dan, Technician
Category: Car
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Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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How to change thermostat in a 2000 Buick Century 3.1

Customer Question

How to change thermostat in a 2000 Buick Century 3.1?
Submitted: 7 years ago.
Category: Car
Expert:  Dan replied 7 years ago.

Here are instructions, let me know if you have questions. Thanks

 

Thermostat Replacement
Notes

Removal Procedure

  • Tools Required
  • J38185 Hose Clamp Pliers

  1. Remove the air cleaner and duct assembly. Refer to Air Cleaner Assembly Replacement in Powertrain Management.
  2. Partially drain the coolant. Refer to Draining and Filling Cooling System.
  3. Use the J38185 in order reposition the hose clamp at the thermostat housing.
  4. Disconnect the radiator hose from the thermostat housing.
  5. Remove the thermostat housing attaching bolts.

  1. Remove the thermostat housing and gasket.

  1. Remove the thermostat.
  2. Clean the mating surfaces.

Installation Procedure

  1. Install the thermostat.

  1. Install the thermostat housing and gasket to intake manifold. Notice: Refer to Fastener Notice in Service Precautions.

  1. Install the bolts to the housing with RTV sealer GM P/N(NNN) NNN-NNNNor the equivalent. Bolts to 25 Nm (18 ft. lbs.).
  2. Connect the radiator hose to the thermostat housing.
  3. Use the J38185 in order reposition and install the hose clamp at the thermostat housing.
  4. Install the air cleaner and duct assembly. Refer to Air Cleaner Assembly Replacement in Powertrain Management.
  5. Fill the cooling system. Refer to Draining and Filling Cooling System.
  6. Inspect for leaks.