Cadillac Seville / Cadillac Eldorado Forum Discussion, heater cold on right half ducts warm on left sid in Past Cadillac Vehicle Discussion; My 96 SLS blows hot air out of the left side, and cold (outside temp or so) air out of ...
- 02-10-06 02:50 PM #1Cadillac Owners Member
- Join Date
- Nov 2003
- monmoth county, nj
heater cold on right half ducts warm on left sid
My 96 SLS blows hot air out of the left side, and cold (outside temp or so) air out of the right side. The airflow is the same on both sides, and the division of temperature is exactly down the middle of the dash vents, with each outside vent and half of the center vent being the same temperature.
This is a major difference, and not the little one you can get with that dash adjustment switch. Any ideas would be appreciated; I have got one suggestioni to turn the heat up all the way, let it run for a while and then lower it down to normal, but, with our crappy weather, I haven't had a chance to drive the car yet to try that.
- 02-10-06 02:59 PM #2Cadillac Owners Connoisseur
- Automobile(s): 99STS,2004 Jeep Liberty Renegade,98 Deville RIP
- Join Date
- Nov 2005
Re: heater cold on right half ducts warm on left sid
Paul, on earlier Caddy's they had a split heater core, I am not sure about your year and model. Im inclined to think that you do not. It sounds like a airmix door movement problem. If you want to confirm this, check first for codes. You probably have a B code somewhere, other than that, others have had success using the 60 to 90 approach. Constantly go from 60 to 90 using the red and blue buttons. WHile you do that, listen under the glove box for any strange sounds like groans or squeaks. Check for the codes, and let us know what you come up with.