If you do not have air flow in the system, probably your fan controller is not getting any juice, to check look under the glove box in the passenger side, you will see a black box bolted to the HVAC module, there is a 3 wire plug that runs to it and 2 wire plug that runs from it to the fan motor, the 3 wire plug has ground wire on one external side, positive wire on the other external side and signal wire from the dual climate control to set fan speed, the biggest issue I've seen with these fan speed control module is that the positive feeding wire over heat and melt, the spade solder in the receptacle, so a good sound connection and resolder is the solution unless you have damaged the board.
All I have heard is to replace it.
4 how to repair climate controlI have a 95 park ave and my climate control broke and the heat stayed on, so I purchased a new climate control from a used parts place for around $70 bucks and installed it my self, you will need to take off the front dash pannel and unplug the old one and insert the plug into the new one. The climate control on my 92 PA was not working properly. I found that the vacuum line going through the fire wall had got disconnected. Connecting that solved my problems.
See the dealer/
GET THE HAYNES REPAIR MANUAL FOR THAT GROUP OF CADILLACS CH 6 HAS THRM ALL 86 to 90 Broughams were incapable of pulling DTC's through the climate control head. To perform a self diagnostics on them, you have to jump the terminals on th ALDL. Follow the instructions in the link to pull DTC's.
When fixing problems in a car, a diagram will help make sure the changes are made correctly. The wiring diagram for this car's climate control is found in its maintenance and repair manual.
Ed McCahill has written: 'Chilton's Jeep Grand Cherokee 2005-09 repair manual' -- subject(s): Cherokee automobile, Jeep automobile, Maintenance and repair, Handbooks, manuals 'Jeep Grand Cherokee automotive repair manual' -- subject(s): Cherokee automobile, Jeep automobile, Maintenance and repair, Handbooks, manuals
Driver side control mudule! Possible broken power wire inside the harness that runs between the body and the door.
You buy a service,repair manual or you take it to a shop
Problem?
You'll find repair manuals at your local auto parts store.
Remove and bring to radiator repair shop or replace at 1-800Radiator
The exact cost to repair a blown head gasket on a Jeep Cherokee varies. It should run between 20 and 40 dollars.