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Home >> Cadillac >> 1997 >> Catera >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Engine Mechanical - 3.0L V6 - VIN [R]) >> Removal & Installation >> Engine >> Removal & Installation

Removal & Installation

WARNING: This page is about a different car, the 1999 Cadillac Catera and 1998 Cadillac Catera. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect negative battery cable. Remove battery. Remove resonance and air inlet ducting from throttle body. Drain cooling system. Remove wiper arms. Remove left and right side air inlet grilles. Remove hood. Discharge A/C system using approved refrigerant recovery/recycling equipment.
  2. Remove Black wiring harness connector. Disconnect ground wire from negative battery cable end. Disconnect 4 power supply wires from battery positive battery cable. Siphon Power Steering (P/S) fluid from reservoir. Remove P/S hoses from P/S pump.
  3. Disconnect power brake booster vacuum supply hose. Disconnect vacuum hoses from intake plenum. Remove intake plenum switchover valve. Unclip ECM and relays from electrical center under hood. Disconnect large Blue and White wiring harness connectors. See Fig 1. Drape entire wiring harness over engine.
    Fig 1: Identifying Blue & White Wiring Harness Connectors Courtesy General Motors Corp.
    G98D07003
  4. Remove accelerator cable and cruise control cable from throttle body. Relieve fuel pressure. See FUEL PRESSURE RELEASE . Disconnect fuel supply and return hoses. Remove coolant return hose from throttle body. Remove coolant reservoir hose from coolant intake pipe.
  5. Disconnect heater hose quick disconnects at heater core. Access quick disconnects through access cover, near HVAC pollen filter. Remove resonance chamber and air inlet ducting from throttle body. Remove radiator. Remove A/C hose support clamps or straps. Disconnect A/C hoses at quick connectors near high side fitting and low side fitting. Cap or plug all A/C ports. Install Engine Support (J28467-A). See Fig 2.
    WARNING: Engine mounts will not provide sufficient support for engine when transmission is removed. Engine support must be used.
  6. Raise and support vehicle. Remove splash shields. Disconnect A/C clutch electrical connector. Remove transmission. See appropriate TRANSMISSION REMOVAL & INSTALLATION article in TRANSMISSION SERVICING. Remove motor mount bolts. Lower vehicle. Install engine hoist chains to 3 support lift shackles of engine. See Fig 2. Jack up hoist to support weight of engine.
  7. Remove engine support. Raise engine slowly, ensuring engine is free and clear of obstructions. Remove engine from vehicle.
  8. To install, reverse removal procedure. Fill and bleed cooling system. Charge A/C system. Check and top off all fluids. See TORQUE SPECIFICATIONS  table.
Fig 2: Installing Engine Support Brace
G97H03709Courtesy of GENERAL MOTORS CORP.