Question about 1989 Cadillac Sedan DeVille

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Cadillac 1989 oil change What is the best type of oil to use on an 1989 Cadillac Sedan De Ville?

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Castrol 20w-50 in summer and 10W-40 in winter, is best in my opinion.
It is high detergent, to remove sludge.
The thinner oil, like 5W-30 is only for better mileage, but cause piston and camshaft wear.

Posted on Oct 07, 2010

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5w 30 is the best oil you can possibly use especially when you're talking synthetic such as mobile 1 ..if you look in the manufacturer's book of specifications it recommends using 5w-30 all year round

Posted on Dec 19, 2012

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1 Answer

Codillace de ville 2004 tyres airpressure


will be on the tyre tag on the door edge or door centre pillar. Check at your tyre dealer.

Jun 10, 2013 | 1989 Cadillac Sedan DeVille

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Recherche module interieur pour cadillac sedan de ville 1989 4306428 ou bien 20484827


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Feb 15, 2011 | 1989 Cadillac Sedan DeVille

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easier way: 3M has a spray contact cement for this that has a very small extension tube that you poke thru fabric and spray, work from center outward for best results

Oct 03, 2010 | 1988 Cadillac Sedan DeVille

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I need a diagram of how to put a steering column back together


Ok It Possible to download it.. From LimeWire To do So Type
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Oct 01, 2010 | Cadillac Seville Cars & Trucks

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I have a 1996 Caddy Sedan De Ville with the Northstar engine. Where is the oil sending unit or does it have one?


The oil pressure sending unit is behind the front engine mount. You will need a deep special oil pressure socket to remove and install.It is NOT an easy task. There is no short cut but you might find it easier to remove the oil filter adapter, if you do that you should replace the "O" rings on the adapter. The oil pressure sender is mounted on the filter adapter

Aug 30, 2010 | 1996 Cadillac DeVille

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1989 Cadillac Sedan De Ville engine stalls when air is turned on...tries to take off when stopped at stoplight..sometimes dies while driving..


It sounds like the idle compensation circuit for the engine is dirty or faulty. Have your car checked at a shop. have them check the idle air motor for dirt or malfunction. It could be that it only needs to be cleaned or replaced.

The compensation circuit adjusts the idle/slow speed of the engine. The air conditioner puts a load on the engine and this circuit adjusts the engine speed to compensate. Also, when the car is cold this circuit adjusts the idle speed to prevent stalling and help the engine warm up faster. I hope this information helps you.

Aug 16, 2010 | 1989 Cadillac Sedan DeVille

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Looking for the firing order for a 89 Caddy De Ville 4.5 engine


Here is the firing order for that vehicle and engine.


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Jul 25, 2010 | 1989 Cadillac Sedan DeVille

1 Answer

How to change a fuel filter on a 1989 Cadillac De ville?


remove the filter with a special removal tool that can be obtained at Auto Zone

Feb 28, 2010 | 1989 Cadillac Sedan DeVille

1 Answer

On my 1994 Cadillac Sedan de Ville, the heater blows cool air but not warm air; however, the defogger does blow hot air.


Sounds like the doors on the heater exchange are not working or are partially blocked.

Nov 03, 2009 | 1994 Cadillac DeVille

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