Starter replacement?

Was this on a recommendation from your car care professional? Flushing the power steering system is not an absolute requirement, unless there has been some catastrophic failure of a pump or gear, or there has been the wrong fluid introduced. Basically, flushing it involves removing fluid from the reservoir, adding fluid and running the system turning the steering lock to lock about 20 times, and repeating the process. Be careful not to drain the reservoir too low with it running, as you will pull air into the system. Once air is in the system, it gets churned up fast. The result is noise, in some systems it is difficult to get the air removed.

You must mean an engine coolant temp sensor. Here's a pic

It may not be shimmed correctly, otherwise it may be sticking due to some type of lube on the starter drive.

Oops made a mistake, that doesnt' take shims. The drive may be sticking, but it's under the intake so if you can live with it then do it.

ENGINE MECHANICAL - 4.6L V8 -2000 Cadillac Seville SLS
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INTAKE MANIFOLD

Removal

Disconnect negative battery cable. Relieve fuel system pressure. See FUEL
RELEASE. Remove 2 nuts from intake manifold sight shield. Remove sight shield from engine. Disconnect coil module connectors. Disconnect PCV valve and fresh air tube from camshaft
cover. Disconnect fuel regulator vacuum tube. Disconnect fuel inlet and return quick-connect fittings at fuel rail. Disconnect fuel rail bracket retaining nut at rear lift bracket.
Remove 2 push nuts securing engine coolant heater wire, and position aside (if equipped). Carefully position aside generator coolant pipe/surge tank pipe from fuel rail studs. Disconnect
electrical connectors from fuel injectors.
Remove bolts attaching fuel rail onto intake manifold. Lift entire fuel rail and injector assembly from intake manifold. Loosen plenum duct clamp at rear of intake manifold. Remove bolts
attaching intake manifold onto cylinder heads. Using an upward lifting motion at front of manifold, remove intake manifold.
PRESSURE
1.
2.
3.
Installation

CAUTION: If throttle body was removed, Do not reuse old "O" ring seal. Do not apply silicone lubricant to "O" ring seal.
NOTE:
Gaskets are secured onto intake manifold with a snap lock. If plastic
housing or rubber seals are not damaged, reuse gaskets.
If throttle body was removed, position NEW throttle body "O" ring seal (coated with petroleum jelly) onto throttle body. Install intake manifold. Tighten intake manifold bolts to specification in several
phases (start with inner bolts and work outward). See TORQUE SPECIFICATIONS. To complete installation, reverse removal procedure.

2/9/2012

Removal

NOTE: Water Pump Remover/Installer (J 38816 A) is required to turn pump assembly.

Drain cooling system. Move engine torque strut for access. Remove air cleaner. Remove water pump belt cover (4 bolts). Remove water pump drive belt,  by pass hose,  lower hose and pump cover. Using water pump
Remover/Installer (J 38816A),  rotate water pump assembly clockwise,  and remove from vehicle. See Fig. 11Â.

Installation

Clean water pump assembly and pump housing sealing surfaces. Using a NEW "O" ring,  install water pump assembly and tighten counterclockwise to 74 ft. Lbs. (100 N.M). To complete installation,  reverse removal

Look it up in a labor time guide, obviously you are fixing cars for people

We don't have access to P&L guides here, unless it's during our "day jobs".

Bad valving. Clogged fluid lines/pipes. Bad/defective shift solenoids/vacuum modulator.

Or a vacuum leak froma arotted vacuum line at modulator or engine