99 GC Limited dual climate problem - JeepForum.com
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1999-2004 Jeep Grand Cherokee Shock Absorber (Set of 4)- G1993-1998 Jeep Grand Cherokee Front & Rear Shocks - GR1995-1998 Jeep Grand Cherokee Front & Rear Brake Pad &

Unread 10-17-2004, 01:27 PM   #1
Registered User
Join Date: Jun 2003
Location: Fort Worth, TX
Posts: 91
99 GC Limited dual climate problem

When i turne my heater on high on both sides, the driver side blasts hot air and the passenger side blows freezing air. Whats the deal?

'95 4 cylinder
6" Rough Country Suspension
33x12.5 BFG AT's
Tuffy overhead console
Hella lights
SmittyBilt Backpack Rack
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Unread 10-17-2004, 01:35 PM   #2
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1996 ZJ 
Join Date: Apr 2003
Location: Belle, WV
Posts: 4,930
It's a ratio thing. In other words, you can have 80 degrees out of one side, or 60 degrees on one side with 20 degrees on the other side, or 40 degrees on both sides.
You can believe that, or you can look at the other two or three active heater control problem threads we have going right now.

Essentially, one of your blend doors isn't working. The plastic gear may be stripped, the door may be jammed, or the motor may be bad. Do a search on blend door to find the other recent posts to learn how to pull the codes and repair your problem.

Black 1996 5.2L ZJ Limited
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