BodybyFisher Posted December 16, 2010 Report Share Posted December 16, 2010 The Monte Carlo has 5 manual HVAC fan speeds (boy do I miss my Deville's Climate Control) Toward the end of the summer, we started losing fan control, first #1 stopped working, then #2, then #3 and so on until we only had HIGH #5 or nothing. I noticed that when I was listening to AM radio, #1 through #4 created static, hmmm. I went to my SI manual and it was all about testing, etc... I did a search on the Monte Carlo forum and immediately found, that if you only have HIGH, your blower motor resistor module is blown... OK easy enough, however the members at the Monte Carlo forum said its a $400 job and a biach to get at, great. I bought an aftermarket resistor module for $27. Well they weren't kidding. First let me say that I am no longer 18 years old and contorting my 6'5" 230 pound frame under the passenger dash was painful to say the least, So I removed the passenger bucket seat, which was a two bolt job, ahh more room, now I am laying where the seat was with my feet on the rear seat, ok The module is under the passenger side of the dash, behind the motor that faces down, JAMMED up against the firewall, and the two rear 7/32" screws are hidden behind the rather stiff sound/heat insulator under the rug...great... AND this is using a MIRROR to see what is going on! Plus its 20 degrees out and my surgeons hands are not as nimble as usual, $400 is beginning to look like a bargain.... I pull out the carpet after removing all kinds of retainers and notice that its a freaking huge job to pull out the sound/heat insulator... OK fine, Ill cut the sound/heat insulator from around the blower module... I get my zip knife and cut a rectangle around the module to expose the 2 rear screws but still needed to use a tiny 1/4" universal adapter with a 7/32" socket on it to get at one of the screws that was buried in a difficult location because there was NO straight in ability to get at the screw, ugh... all using a MIRROR and LED flashlight attached to my HEAD.... Its freezing, my nosey neighbors seeing the seat on the driveway are stopping by to impede my progress, but thankfully my daughter brought out some hot chocolate.... don't you love it when your neighbors say, why didnt you do this when it was WARM out? I politely said, why did you spend $400 to do your rear brakes yesterday?, that's a $100 job to DIY... Ahh, touche' gotta love it... I finally get the module out, its burned, put the new one in, and it worked perfect! Put the carpet back, vacuum the carpet, put the seat back and it works great.... The point is, why doesn't GM design stuff like this with the foresight that just MAYBE someday, someone might have to work on it.... Even if I needed to remove the glove compartment, put it in an accessible place... I dont understand this type of design... $27 part, $400 to install because you need to disassemble the car and be 5'2" 90 pounds to do it.... Your average owner does not do this job Ahh heat in the car that is not blasting you in the face.... Here is the module Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
This topic is now archived and is closed to further replies.