Question about 1999 Oldsmobile Silhouette

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99 olds silhouette flush and fill

How do i flush and fill the radiator on a 99 oldsmobile silhouette and how do i change the thermostat?

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  • 99oldsvan Dec 20, 2008

    What is easiest way to drain 1 qt or less from coolant system on 99 Olds Silhouette?

  • Anonymous Dec 29, 2008

    over heating



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Use a Turkey Baster to **** the extra fluid out.

Posted on Jan 06, 2009

  • poorman fix Jan 06, 2009

    This system is done in one of two ways. vacuum or bleeding the system of air. The last thing you want is a air bubble in the cooling system. vacuum if you own the tools, after it is drained it puts a vacuum on the system and willing tell you if you have a a leak(or it can create a leak) Then you have a bucket of anti freeze there and it vacuums it into the engine(theory is it pulls in just what it needs)

    #2 Drain and fill system while engine is running open bleeder valves to let air out of the system should be about 3 valves. Air in the system can and does cause over heating



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How to flush radiator 2000 olds silhouette

take off the cap
remove the hose underneath the radiator
put your hosepipe in the radiator cap
and allow water to flow through till its clear
then replace the radiator hose and refill with coolant

Dec 26, 2014 | 2000 Oldsmobile Silhouette

1 Answer

Where is the radiator drain plug for a oldsmobile silhouette 1999

On my 99 Silhouette with a 3400 V-6 the drain plug is on the drivers side of the radiator at the bottom adjacent to the mounting post casting on the bottom of the radiator.

Jul 13, 2014 | 1999 Oldsmobile Silhouette

1 Answer

I have a 1998 oldsmobile silhouette that is over heating. I have changed serpentine belt, water heater, thermostat, flushed radiator, changed all hoses to radiator, changed oil and transmission fluid. i...

to be checked the fan control relay who command rotation speed fans and that depending on the temperature of the coolant.
verified, also cylinder head gasket ( to be changed), only after deck flatness

Sep 15, 2013 | Oldsmobile Cars & Trucks

1 Answer

How to flush coolant system in 1998 Olds Silhouette

Here's a link to read about your Olds.Here's a kit that has instructions how to flush.You need to drain the system, the drain valve is located on lower driver side of the radiator. When the system is dry, shut the valve and fill the radiator with new coolant. Fill until the coolant runs out the top, fill the overflow tank to cold mark.
Start the engine and let it warm up until the thermosat opens. Standing in front of the vehicle there is a small bleed valve located on the right just above the thermostat open it until the coolant comes out and shut it back off. Located on the left of the engine just above the water pump is another bleed valve, do the same with it. You may have to do this two or three times before you have all the air out of the system.

Mar 09, 2013 | 1998 Oldsmobile Silhouette

1 Answer


locating the thermostat housing there will be a thick hose from radiator to some where on cylinder head this will be the housing where you will find the thermostat undo the bolts take out old thermostat then reverse to put back

Sep 02, 2012 | 1998 Oldsmobile Silhouette

1 Answer

My 2002 Oldsmobile Silhouette keeps overheating. We replaced the thermostat and flushed the system by adding new antifreeze. The air blows cold from the heater when the car starts to overheat. Once

there can be air pocket somewhere you need to bleed system properly. rais the front let is idle bleed it thru bleeding screw. be sure that bubbles are over.

air pockets prevent coolant travel inside system. so it may not reach to radiator, or cabin heater or both.

Nov 19, 2011 | 2002 Oldsmobile Silhouette

1 Answer

My 2002 Olds minivan is overheating. I changed thermostat and flushed radiator, bled the air from the air valves and changed the temp sending unit. It does not leak fluid and waterpump and belt are on...

My 02 silhouette just started having the same problem and I was told it was the head gasket. I was told mini vans with the 3.4 engine have this problem after a certain amount of miles. My brother has had this happen in 2 different vans with same engine. Hope this helps.

Sep 10, 2010 | 2002 Oldsmobile Silhouette

1 Answer

Why is my 1999 oldsmobile still overheating after changing the thermostat and flushing out the radiator?

Could be a bad intake manifold or head gasket. These are prone to that problem. If you are lucky you may only have an air bubble in your system. Fill the system with the bleeder screw open until antifreeze comes out and then seal it. Make sure you have enough antifreeze in the radiator itself, dont depend on the overflow bottle.

Aug 08, 2010 | 1999 Oldsmobile Silhouette

2 Answers

My 2001 oldsmobile silhouette keeps over heating. i have replaced the water pump and the thermostat. it keeps getting air in the water lines but i can't find a leak. it won't cycle water through the heater...


I have and 98 Intrepid 3800 motor, and had same problem.

I tried a few things, but what finally worked was when I took the car for a complete cooling system flush, they opened the radiator and cleaned every single passage line, flushed motor and heater core,

It cost me about $100 but I havent had a problem since. I recommend you do the same.

There is a screw on the thermostat housing that is used to purge the air out of the cooling system. On your owner's manual are detailed instruccions of this procedure.

If helpful, click below. Good Luck

Apr 05, 2010 | 2001 Oldsmobile Silhouette

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