Question about 1991 Cadillac Seville
I have a 91 Cadillac Sedan Deville that has no heat. We have replaced the blower motor and it blows cool air. All the hoses have been checked and there is no overheating problems so the thermostat is fine. We suspect there is something going on with the heater control module. Do you know where I can get a diagram of the heating system to show where this is located? Thanks for your assistance.
I would beleive more that you have build up in the heater core. Try taking loose the heater hoses from the block and use a water hose to spray into one of the hoses letting it come out the other hose then switch hoses with the water hose and keep reverseing for 2/3 times each hose. sounds like stop leak may have been used in a prior time and may be blocking water flow.
Posted on Feb 08, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jan 10, 2016 | 1993 Cadillac DeVille
Dec 09, 2013 | 1998 Cadillac DeVille
Oct 03, 2012 | 1992 Cadillac DeVille
Feb 21, 2011 | 1997 Cadillac DeVille
Dec 01, 2010 | 1994 Cadillac DeVille
May 13, 2010 | 1998 Cadillac DeVille
Aug 20, 2009 | 2002 Cadillac Deville
Apr 21, 2009 | 1996 Cadillac DeVille
Dec 09, 2008 | 1992 Cadillac DeVille
May 28, 2014 | 1991 Cadillac Seville
487 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: