Question about 1999 Cadillac DeVille

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I have a 1999 Cadillac Deville. It has the a/c codes and is full

I have a 1999 Cadillac Deville. It has the required amout of freon. I still have a low coolant light on because I have a/c codes. How do I clear these codes ? (reset them)

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  • toneman2121
    toneman2121 Jun 04, 2010

    low coolant is refering to engine antifreze

  • jcarreo1 Jun 04, 2010

    It Is a low a/c refridgerant. It is fully charged. I have a couple of codes I was told needed to be cleared out in order for a/c to work. I do not know how to clear these codes.



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One way that could work is to disconnect the battery for a few minutes. some models won't do it. the only other way is to take it to a shop that has a scan tool and have them clear it. did the person that told you the codes must be cleared, tell you what the codes were? it is possible to purchase and inexpensive code reader that is capable of clearing codes

Posted on Jun 04, 2010


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1999cadillacdevilleacwillnot engage

Make sure you have freon in the system,also make sure you have no codes in the DIC for the A/C...usually you will have a code ACM 1341 clear that code and it should work.

Aug 07, 2012 | 1999 Cadillac DeVille

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Which line 2 add fron in a 99 cadi deville?

there are two lines high and low side you put the freon on the low side also check the back of the freon can

Jun 07, 2011 | 1999 Cadillac DeVille

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You have to be a licensed AC mechanic to handle freon. It is against the law at the federal law. If you have to ask this question, you didn't know this.

May 11, 2011 | 1991 Cadillac DeVille

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How do put freon in a cadillac deville concourse

the answer is simple. you DO NOT!! Even a \licensed mechanic can not if the situation doesn't warrent it. These situations are controlled by the EPA to reduct ground water contamination and putting OSONE IN THE AIR.

Jun 20, 2010 | 1999 Cadillac DeVille

1 Answer

How do I reset service engine light on 1999 cadillac deville

1996 on up OBD II systems require a scanner with the 'clear code' feature to reset the SES light.

Otherwise, one can cycle starting and stopping the engine 30 or 40 times to clear the SES light. This is not recommended, though, as it takes a long time.

Jun 03, 2010 | 1999 Cadillac DeVille

3 Answers

1999 cadillac deville a/c off low refrig error

I had the same problem. The mechanic could not get the compressor to take in new freon. It has to do with the car's memory. You have to reset it by disconnecting the hot wire from the battery which for thirty seconds. This resets the cars internal memory, so it won't remember that it's out of freon. Reconnect it turn on the car and turn on the air the compressor will start.

Apr 26, 2010 | 1999 Cadillac DeVille

1 Answer

A/c blowing out hot/room temp air & it's full of freon. also I believe it has a leak.

not possible to be full of freon and have leak,freon will never break down in a sealed system

Jun 23, 2009 | 1999 Cadillac DeVille

1 Answer

Ac not working

the sensor that detects low freon went bad and your compresor is not turning on try replacing that sendor

Jun 22, 2009 | 1999 Cadillac DeVille

1 Answer

Location for adding freon

add freon to low pressure side . low pressure side is large line with small fitting. high pressure line has a large fitting.

Apr 04, 2009 | 1999 Cadillac DeVille

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