02 eldo collectors series, 98 eldo, 97 deville, 96+94 SLS,
For all you guys & gals that own a 91 or newer Caddy and have heat on passengers side and not on drivers side, I found the problem. I have been having the same problem with my 93 deville, and I have been going crazy troubleshooting it. I had done everything imaginable to try to find out what is going on with this cars heat, if you have done it to your car I have already done it. I come to find out today that it was a clogged heater core. Now this one really threw me because both upper and lower hoses were getting hot, but when I actually pulled the programmer and the outside panel off to expose the core, and STARTED the car I found that from the bottom to about 1/4 of the way up was ice cold and the rest was hot. The drivers side, which you usually lose the heat on is heated by the bottom half of the heater core, due to a split level duct system, THERE ARE NO MIX DOORS to control drivers side and passengers side temp untill after 93', so don't waste your time like I did looking for it. Just go right for the heater core. Now my 90 Deville, same car, same body style, but a lot of little changes, has a hollow heater box, no split level, so when the core got clogged on it I just lost heat PERIOD, ( I just discovered that today) So I am going to buy 1 heater core from the Autoparts, and replace it on my 93, once I have the old one out I will look into how hard it will be to un-clog it and let you guys know if it works out. I can predict I will find it more benificial to buy a new one for 36 bucks at Autozone then mess with some old one that has had coolant and other stuff eating away at it for a long long time. Ok, I am off to work, I will let you know how I make out.