Cooling System Bleeding: Removal & Installation Oldsmobile Silhouette II

Removal

1. This procedure involves removing engine, transaxle and frame member as an assembly. Disconnect battery cables. Remove fuel injector sight shield.
2. Release fuel pressure. See «FUEL PRESSURE RELEASE»(ref-54804-S11818628562001011700000) . Remove air cleaner. Drain cooling system. Discharge A/C system using approved refrigerant recovery/recycling equipment.
3. Remove radiator and heater hoses from engine. Remove engine mount strut. Remove throttle body bracket and cables. Remove fuel lines. Disconnect necessary electrical connectors and vacuum lines from engine. Disconnect brake booster hose.
4. Disconnect transmission shift control cable and A/C lines. Raise and support vehicle. Drain engine oil. Disconnect wiring harness grounds. Disconnect exhaust/converter pipe from right exhaust manifold. Remove front wheels.
5. Remove inner fender splash shields. Remove stabilizer shaft links from lower control arms. Remove tie rod ends from steering knuckles. Remove lower ball joints from knuckles. Drain transaxle fluid.
6. Remove transaxle cooler lines and bracket from transaxle. Remove drive axles from transaxle. See «AXLE SHAFT - FRONT»(ref-54808) article in DRIVE AXLES. Wire drive axles to steering knuckles. CAUTION: Failure to disconnect intermediate shaft from rack and pinion steering gear stub shaft can result in damage to steering gear and/or intermediate shaft. This damage can result in loss of control of vehicle.
7. Remove pinch bolt/screw at intermediate shaft. Remove intermediate shaft from steering gear. Support engine/transaxle/frame with transaxle table. Remove frame-to-body bolts. Lower engine and transaxle unit from vehicle.

Installation

To install, reverse removal procedure. Fill cooling system. Evacuate and charge A/C system. Tighten nuts and bolts to specification. See TORQUE SPECIFICATIONS .

1. Disconnect negative battery cable. Remove fuel injector sight shield. Release fuel pressure. See «FUEL PRESSURE RELEASE»(ref-54804-S11818628562001011700000) . Drain cooling system. Remove air cleaner ducts.
2. Disconnect control cable bracket and control cables from throttle body. Disconnect harness connectors, vacuum hoses and coolant hoses from throttle body. Remove front spark plug wires. Remove ignition coil bracket with coils, purge solenoid and vacuum canister solenoid.
3. Remove manifold air pressure sensor. Disconnect vacuum connections from upper intake manifold. Remove EGR valve and rear generator bracket. Remove upper intake manifold retaining bolts. Remove upper intake manifold and throttle body assembly.

Note. Manufacturer does not provide a specific upper intake manifold torque sequence.

To install, reverse removal procedure. Tighten nuts and bolts to specification. See TORQUE SPECIFICATIONS . Fill cooling system.

1. Remove upper intake manifold. See «UPPER INTAKE MANIFOLD»(ref-54804-S06422626322001011700000) . Remove valve covers. See «VALVE COVERS»(ref-54804-S02840331872001011700000) . Release fuel pressure. See «FUEL PRESSURE RELEASE»(ref-54804-S11818628562001011700000) . Remove fuel lines and rail. Disconnect harness connectors from intake manifold components.
2. Unbolt power steering pump from front cover and position aside. Disconnect heater and upper radiator hoses from lower intake manifold. Remove lower intake manifold retaining bolts. Remove lower intake manifold and gaskets.

Note. When replacing lower intake manifold gasket, a revised intake manifold gasket has been introduced by manufacturer. This new design gasket helps resolve issues related to intake manifold oil/coolant leaks. The gasket requires a revised torque specification and procedure in addition to the use of NEW revised intake manifold bolts. Please review TSB ENGINE OIL OR COOLANT LEAK (INSTALL NEW INTAKE MANIFOLD GASKET) for complete information.

1. Clean all gasket mating surfaces. Install lower intake manifold gaskets. With the gaskets in place, apply a 0.31-0.39" (8-10 mm) drop of GM® RTV sealer (12346286 US; 10953472 Canada) or equivalent to the 4 corners of the intake manifold-to-block joint.
2. Connect the drops at both ends on the ridge where the front and rear of lower intake manifold contacts the block with a bead of RTV sealer that is 0.31-0.39" (8-10 mm) wide and 0.12-0.20" (3.0-5.0 mm) thick. Install lower intake manifold. Apply sealant (12345282) to bolt threads if reusing old bolts.
3. Tighten nuts and bolts to specification. See «TORQUE SPECIFICATIONS»(ref-54804-S40544927202001011700000) . To complete installation, reverse removal procedure. Fill cooling system.

Scheme 1