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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 197 (Engine Cooling System) >> Repair Instructions >> Coolant Crossover Pipe Replacement - LZ9 (3.9L) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Fro Cover & Bracket Assembly
GM1584086Courtesy of GENERAL MOTORS CORP.
  1. Position the coolant crossover pipe to the cylinder heads.
    NOTE: refer to FASTENER NOTICE in Cautions and Notices.
    2. Fig 2: View Of Coolant Crossover Pipe
    GM1679795Courtesy of GENERAL MOTORS CORP.
  2. Install the coolant crossover pipe bolts (1-4).

    Tighten:  Tighten the bolt to 50 N.m (37 lb in).

  3. Reposition the heater pipe.
  4. Install bolt holding heater pipe to left cylinder head.
  5. Install bolt holding heater pipe and wiring harness to coolant crossover pipe.
    6. Fig 3: Removing/Installing Radiator Inlet Hose
    GM1584078Courtesy of GENERAL MOTORS CORP.
  6. Install thermal bypass hose to crossover pipe.
    7. Fig 4: View Of Coolant Recovery Reservoir Inlet Hose
    GM1677950Courtesy of GENERAL MOTORS CORP.
  7. Position thermal bypass hose clamp at crossover pipe.
  8. Install radiator inlet hose to crossover pipe.
  9. Using a small flat-bladed screwdriver, release hose clamp retention lock at coolant crossover.
  10. Install coolant recovery reservoir inlet hose (2) to coolant crossover.
  11. Position coolant recovery reservoir inlet hose clamp (1) at coolant crossover.
  12. Install power steering pump. Refer to POWER STEERING PUMP REPLACEMENT .
  13. Install drive belt idler pulleys. Refer to DRIVE BELT IDLER PULLEY REPLACEMENT .
  14. Install generator. Refer to GENERATOR REPLACEMENT (LZ9) .
  15. Install intake manifold cover. Refer to INTAKE MANIFOLD REPLACEMENT - UPPER - 3.9L .
  16. Fill cooling system. Refer to Draining and Filling Cooling System (Static Fill) .
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