Question about 1999 Cadillac DeVille

3 Answers

Hot & cold

When I turn on the A/C I have hot on drivers side and cold on the passenger side. 1999 cadillac deville

Posted by on

  • wwcma Jul 11, 2008

    need help. ac hot and cold. hot on driver's side cold on passenger side 1999 cadillac Deville.

  • Anonymous Jul 28, 2008

    Have a 99 Caddy Deville. A/C is blowing hot on driver side and cold on passenger side! Never heard of that. Can u give some pointers.

×

3 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I had the same problem just now and figured out what the problem was. I don't have a climate control button on my dash but on the passenger door, where you have the set button, try and click your number 1 setting. The a/c heater should go off. Then manually turn your a/c back on. It should be blowing cold air on both sides of the car. Somebody must of set it before I bought the car and the settings are preprogrammed in. If the set 1 doesn't do it for you, then try the set 2 button. Theses buttons get accidentally hit when either getting in and out of your car or when you use the seat button or window button. Hope this helps......

Posted on Dec 26, 2008

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 3 Answers

Have a young friend of the family who has adopted me as an uncle (he keeps his Dad's Caddy and his real Uncle's Caddy running smoothly). He recently fixed this problem on my car, same as he'd seen on his Dad's car - there's a rod assembly that opens and closes the vents in the car for the automatic climate control. It's supposed to open all vents to the AC feed when in AC mode. BUT, if it slips loose, the default status is to feed heat through (you can open a window in the summer, but you don't want AC blowing in your face and on your windshield in the winter). In my case, the driver's side was working right, pumping cold air, but the passenger side was actually dumping hot air into the car. Don't know exactly where, but my friend told me he just had to drop the glove box etc. on the passenger side to get to the rod and slipped it back into place. I'm not agile enough, but if you are, you can probably crawl around under there and figure it out - or get a friendly mechanically inclined young friend to do it for you. Probably in the mechanic's manual for the Caddy (I don't have one).

Think this will fix it for you - did for me.

Posted on Jul 29, 2008

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Expert
  • 74 Answers

Your frion is low or tempture controll unit can be bad

Posted on Jul 26, 2008

2 Suggested Answers

  • 4 Answers

SOURCE: 1999 cadillac Deville cold air blowing out passenger side vents

Sounds like a Blend door issue, but could be the controller switch, Test ALL modes of operation to see what works and what does not. That should narrow it down a bit. The Blend doors are flap/ doors that regulate air flow, newer vehicles are plastic - electric assemblies ...prone to failure. Any clicking or thumping noises during switching modes and on-off suggest a bad Blend door. Hope that helps...good luck

Posted on Jan 12, 2009

duane_wong
  • 6826 Answers

SOURCE: 1998 DeVille: 1999 cadillac deville drver side heat blows hot pa...

The blend door for the passenger side is not connected right or functioning correctly. Try seeing if the dial on the armrest on the passenger side is not rotated one way or the other too much.

Posted on Sep 20, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My 1999 cadillac deville air conditioner blows cold on drivers side and hot on passenger side. heater works good on both sides.


Visit the on-line store, know as reliable-store, they have the repair manuals. I'm sure you will get the solution of your problem. Deville 1996 1999 Factory Service Workshop repair manual

Oct 21, 2016 | 1999 Cadillac DeVille

1 Answer

Cadillac air condition


The passenger side air temp control has a problem. Check connections at switch. If you have a volt meter you can check the switch for continuity or ohms of resistance. No continuity, replace switch.

May 10, 2014 | 1998 Cadillac DeVille

1 Answer

The driver side heater works great but the passenger blows out cold air


does your vehicle have dual climate control? if so you probably have a blend door actuator problem. it will have 1 for each side

Feb 11, 2012 | 1999 Cadillac DeVille

1 Answer

99 deville,cold air on pass. side warm on drivers side


There should be a nozzle on the left passenger side that has blue for cold and red for hot so if there is a light on the nozzle all you have to do is turn it to cold if you want it cold. Caddy's have dual heat so you can change what you feel coming out push the nozzle in and the light should go off. Therefore making the car on the same hot/cold.

Dec 23, 2011 | 1999 Cadillac DeVille

1 Answer

No Heat Passenger Side. I have a 1999 Cadillac Deville. The problem is I can't get heat on the passenger side. Air blows but it is cold. I do have heat on the driver?s side. My car has the spate...


Hello: You have a failed temperature control actuator for the passenger air mix door. Remove the glove box and the close out panel under the dash on the passenger side. You will see two silver rods going from the actuators (mounted on the top and bottom of the heater/a/c programmer) Turn key on (engine off) Turn the a/c heater control on. Go from 60 to 90 or 90 to 60 and watch the rods the one that doesn't move is the failed one. The actuator is held in place by two 7mm screws and one electrical connector. When installing the new actuator have the temp set at 60 when you hook up the linkage. The passenger side set at full cold.

Nov 16, 2010 | 1999 Cadillac DeVille

1 Answer

1998 DeVille: 1999 cadillac deville drver side heat blows hot pa...


The blend door for the passenger side is not connected right or functioning correctly. Try seeing if the dial on the armrest on the passenger side is not rotated one way or the other too much.

May 15, 2010 | 1998 Cadillac DeVille

2 Answers

1999 cadillac deville d'elegance heater problem


i've been down here too myself, and discovered that the temp control motor, located in the bottom of the glove box, which you can access by clearing all your stuff in in and opening a small door.
you can adjust it manually, and see if it changes, if yes, the switch can be defective, as well as the motor, the switch is the most likely problem.
but adjust it manually first.

Phil
grandmotors.ca

Dec 04, 2009 | 1999 Cadillac DeVille

1 Answer

A/c blows cold on passenger side and hot on drivers side


REPLACE THE AC CONTROL ASSMBLY AND BOTH BLEND DOOR ACTUATORS.

Jun 24, 2009 | 1999 Cadillac DeVille

Not finding what you are looking for?
1999 Cadillac DeVille Logo

407 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cadillac Experts

yadayada
yadayada

Level 3 Expert

60792 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

Are you a Cadillac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...