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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1949 (Engine Cooling System) >> Repair Instructions >> Engine Coolant Crossover Pipe Replacement (LZ4) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Crossover Pipe
    GM1237580Courtesy of GENERAL MOTORS CORP.
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the battery. Refer to Battery Replacement .
  3. Drain the engine coolant. Refer to Cooling System Draining and Filling (Static Fill Without HP5)  or Cooling System Draining and Filling (GE 47716 Fill Without HP5) .
  4. Disconnect the engine coolant temperature (ECT) sensor electrical connector.
  5. Remove the ECT sensor.
  6. Remove the radiator inlet and outlet hoses from the crossover pipe.
  7. Disconnect the wiring harness ground terminal from the crossover pipe.
    8. Fig 2: Exploded View Of Thermostat (L66)
    GM1237799Courtesy of GENERAL MOTORS CORP.
  8. Remove the thermostat housing and thermostat from the crossover pipe.
    9. Fig 3: View Of Crossover Pipe & Crossover Pipe Bolts
    GM1237801Courtesy of GENERAL MOTORS CORP.
  9. Remove the crossover pipe bolts and crossover pipe.
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