Question about 2001 Cadillac DeVille

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What kind of coolant does a cadillac deville use?

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If you have the Northstar engine do not use ordinary coolant (the green stuff).You must use a long life silicate free coolant.
Dexcool was the original coolant used but there are many other brands to choose from now. It is usually a red-ish or pink-ish color (yellow if you choose the Prestone brand).
To clarify, make sure it states LONG LIFE or 150,000 miles on the label but more importantly it MUST be SILICATE FREE.
Mix the coolant 50/50 preferably with distilled water but clean tap water is ok.

Posted on Feb 28, 2010

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Use predilutted peak thats what worked best for me

Posted on Feb 24, 2010

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You have to make sure the system is full with antifreeze by doing so you might want to fill your system from the top upper radiator hose until you see it come out of the engine side.

Posted on Jun 19, 2016

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Posted on Jan 02, 2017

r_mcalhoun
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SOURCE: 2000 cadillac deville check coolant message comes on but coolant

the sensor in the anti freeze bottle some times it sticks some times a light tap will loosen it up but some times you need to replace it

Posted on Apr 05, 2009

emissionwiz
  • 85020 Answers

SOURCE: 2002 Cadillac Coolant sensor

The engine coolant temperature sensor is located on the driver side of the engine near the rear of the engine compartment

Posted on Oct 08, 2008

emissionwiz
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SOURCE: 1994 cadillac deville concours

Look if the engine is doing what you say then it is overheating and there is no problem with the sensor, remember the sensor only tells what is going on, it does not cause anything like overheating. Have you bled the system of air, there is a factory procedure to do this.

Posted on Oct 14, 2008

  • 97 Answers

SOURCE: 2001 cadillac deville, overheats without loss of coolant

First, provided their are no visible coolant leaks and/or loss of coolant with no signs of leaks, I would thoroughly flush cooling system and replace coolant, then check and/or replace thermostat (you can place thermostat in boiling water to check for proper function), if you have tried these 2 steps and still are experiencing overheating you may need to replace your water pump which can be a tricky job if you're unfamiliar and try to do it yourself, however, I could walk you through it if necessary. Also visually check your radiator hoses for bulges, wear ,etc along with heater hoses etc. You may want to also check radiator fins to see if they are dirty/obstructed and clean if necessary. Let me know if I can assist you further and how it works out

Posted on Aug 30, 2009

dealt_soul
  • 296 Answers

SOURCE: im receiving a check coolant

No the light is linked to a sensor. There is a coolent sensor that tells you that the level is low. It sounds like the sensor has gone bad. And the sensor is located in the coolent tank. If it is bad from my understanding you have to replace the whole tank. But take a paper clip with the engine off and disconnect the wire harness from the sensor and jump the wires and see if the light goes off.

Posted on Jan 20, 2009

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1 Answer

99 cadillac deville runnin hot


Look for the silly stuff. Check for things blocking off the radiator, coolant level, water pump belt, etc. If none of those help, check the cooling fan, coolant temperature sensor, fan relay and fan fuses. If everything there is working, consider a stuck thermostat, an obstruction in the cooling system itself or a failed water pump. Kind of a long shot but engine timing can also make it run hot. Hope this helps.

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Best Answer

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You can find Dexcool just about anywhere antifreeze is sold.

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The engine coolant temperature sensor is located on the driver side of the engine near the rear of the engine compartment

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