Engine Coolant Thermostat Replacement (LLT)

Fig 1: Engine Coolant Thermostat (LLT)

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
Preliminary Procedures Partially drain the cooling system. Refer to Cooling System Draining and Filling (LLT Static Fill) or Cooling System Draining and Filling (GE 47716) . Remove the radiator outlet pipe. Refer to Radiator Outlet Pipe Replacement (LLT) . Remove the rear intake manifold cover.Refer to Intake Manifold Cover Replacement - Rear
1	Engine Coolant Thermostat Housing Bolt (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten: 10 N.m (89 lb in)
2	Upper Engine Coolant Thermostat Housing
3	Thermostat Procedure: Install a New thermostat housing seal.