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96 Grand Cherokee Heat/AC control errors


This is a discussion on 96 Grand Cherokee Heat/AC control errors within the Grand Cherokee Forum forums, part of the Jeep Forum - Jeep Models category!
Hello guys, I have a weird one for you. Anyone have a fix for this? I drive my Grand Cherokee ...


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Old 02-18-2012, 12:11 PM   #1 (permalink)
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Join Date: Apr 2010
Location: Auburn, WA
Name: Michael
Posts: 1
Default 96 Grand Cherokee Heat/AC control errors
Hello guys, I have a weird one for you. Anyone have a fix for this?
I drive my Grand Cherokee daily as a field service technician and several times a day the digital heater/AC control will like stop controlling the heat and the temp will rather suddenly change, a lot. Most, but not all of these times are preceeded by the letters "er" on it's display.
Sometimes turning it all the way off for a while then back on works and sometimes this makes no difference.
I suspect the electronic heater control module itself, but wanted to run this by all of you before I dive into it. Thanks!
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