Question about 1999 Cadillac DeVille

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High pitch noise under the hood

1999 Cadillac deville high pitch noise coming from under the hood

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Sounds like your serpentine belt is slipping try checking your belt tension with engine off if ok replace belt or purchse belt dressing spray at your local parts house.

Posted on Nov 16, 2009

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1 Answer

No 12v atfusebox under hood


Look under the bottom of the back seat, behind the carpet coming up from the floor.

Apr 04, 2014 | 1999 Cadillac DeVille

1 Answer

White smoke from under the hood of a 1999 cadillac deville with northstar what could it be


it sounds to me like the car is in need of a mojor flush and possible fan swith temp module. that could cause the radiator cap to over pressurize and shoot water out . can you give any more details? does it cool back off when you drive?

Oct 25, 2012 | 1994 Cadillac DeVille

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I put a mixure of oil and gas in my 1999 cadillac deville how to drain it out


Use the in tank electric fuel pump to pump it out by jumpering the fuel pump relay socket with the key on. The relay is located under the hood in the fuse and relay center. Unless this is a very high mist of oi to gas you need not do this, just top it off as soon as its low and continue to dilute the gas.

Feb 24, 2012 | 1999 Cadillac DeVille

1 Answer

99 caddilac deville, clicking noise under hood when heater goes on, coolant smell,and heat blowing thru defrost only


sounds like a bad vacuum diaphram, used to switch coolant flow and/or airflow direction. this is best repaired by an expert, but can be done at home,with the proper tools and a manual specific to your vehicle.

Feb 15, 2011 | 1999 Cadillac DeVille

1 Answer

Where are the computers located on an 1999 cadillac deville


1 is located under the hood on the side of the drivers side fender, and the second computer is located in behind the kickpanel inside the car just in front of the passenger door. it is located on the wall, not under the carpet !!

Nov 17, 2010 | 1999 Cadillac DeVille

2 Answers

Where is the fuse box to a cadillac deville 1999 located at...


One is in the trunk on the driver side be hind the rear seat. Second is under the hood on the driver side by the air filter..

Jul 08, 2010 | 1999 Cadillac DeVille

2 Answers

1999 Cadillac Deville won't Start!


Well if your battery is ok than you more than likely need a starter.

Sep 21, 2009 | 1999 Cadillac DeVille

1 Answer

1999 Cadillac Deville and the radiator fans are not coming on


you should check the fuse in the fuse boxe under the hood and find the radiator fan fuse
if the fuse is no longer good the little piece of metal will be cut in the middle so replace it with the same number if it's a 20 AMP do not put a 30 or a 15 AMP
if the fuse is good then there might be some problem with wires (could be cut) or the radiator fan motor is no longer good
you should have it check
Good luck

Jun 14, 2009 | 1999 Cadillac DeVille

1 Answer

Rubbing or grimming sound in the fron right area under the hood


sounds like disc brake early warning sensors. High pitch squeal like chalk on the blackboard.

Mar 16, 2009 | 1995 Cadillac DeVille

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