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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling System >> Repair Instructions >> Thermostat Replacement >> Removal Procedure

Removal Procedure

CAUTION: In order to avoid being burned, do not service the engine while it is still hot. Service the engine when it is cool.
  1. Drain the coolant to a level below the thermostat. Refer to DRAINING AND FILLING COOLING SYSTEM .
  2. Remove the air cleaner assembly. Refer to ENGINE CONTROLS - REMOVAL & INSTALLATION in Engine Controls-4.3L.
  3. Disconnect the ground lead from the coolant outlet.
    Fig 1: Removing Thermostat
    G01646428Courtesy of GENERAL MOTORS CORP.
  4. Remove the bolt/stud and the bolt on the coolant outlet.
  5. Remove the coolant outlet.
  6. Remove the thermostat.
  7. Clean all of the parts and the sealing surfaces.
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