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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1864 (Engine Cooling System) >> Repair Instructions >> Engine Coolant Crossover Pipe Replacement (3.5L (L66)) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Crossover Pipe & Crossover Pipe Bolts
    GM1237801Courtesy of GENERAL MOTORS CORP.
  1. Clean and dry the area before installing new seals.
  2. Install the crossover pipe.
    3. NOTE: Refer to Fastener Notice .
  3. Install the crossover pipe bolts.

    Tighten:  Tighten the crossover pipe bolts to 22 N.m (16 lb ft).

  4. Install the thermostat and thermostat housing.

    Tighten:  Tighten the thermostat housing bolts to 12 N.m (106 lb in).

  5. Connect the coolant hoses at the crossover pipe.
  6. Connect the wiring harness ground terminal to the crossover pipe.

    Tighten:  Tighten the nut to 12 N.m (106 lb in).

    7. Fig 2: View Of Crossover Pipe
    GM1237580Courtesy of GENERAL MOTORS CORP.
  7. Apply thread sealant (Saturn P/N 21485277) Loctite™ 242 threadlocker, or equivalent, to sensor threads.
  8. Install the ECT sensor.

    Tighten:  Tighten the ECT sensor to 18 N.m (13 lb ft).

  9. Connect the ECT sensor harness connector. Push in the connector until a click is heard, then pull back to confirm a positive engagement.
  10. Install the battery. Refer to Battery Replacement (2.2L (L61) and 3.5L (L66)) or Battery Replacement (2.4L (LAT)) .
  11. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (2.2L (L61) and 3.5L (L66)) or Battery Negative Cable Disconnection and Connection (2.4L (LAT)) .

    Tighten:  Tighten the battery terminal bolt to 17 N.m (13 lb ft).

  12. Fill the coolant. Refer to Draining and Filling Cooling System (Static Fill)  or Draining and Filling Cooling System (GE 47716 Fill) .
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