his is a common problem on 99 to 04 Grand Cherokees. The blend(temp) door actually breaks inside of the dash. The only repair is to remove the dash and ac housing and replace the blend door and recuirculation door. Approximatly a 6 hour job for a pro. == ==
it up under the passenger side dash, the blower plugs into it. super easy fix
Dual Zone Climate Control: -It is possible with dual zone climate control that every passenger in the car can have separate air conditioning temperature.
because someone was fiddling with the passenger climate control and now that baffle has stuck in the cold position . I had a 1997 buick lesabre which had the climate control functioning until a friend started adjusting it a few times then it became stuck in the cold position but only for the passenger side It is likely a mechanical bind in the baffle .
It is for dule zone climate control
The 1993 Jeep Grand Cherokee engine control module is located on the firewall in the engine compartment. The engine control module will be on the passenger side of the firewall.
It begins at the intake manifold.
On the unit behind the passenger side of the dashboard.
The temp control door is on a vertical axis on the Cherokee(XJ), and the control motor is on the bottom of the heater box under the passenger side dash. Check heatertreater.net for pictures and diagnostic information for this system.
The engine computer also handles the transmission control on this year Grand Cherokee. It is on the firewall on the passenger side. It's fuses will be in the under hood fuse box.The engine computer also handles the transmission control on this year Grand Cherokee. It is on the firewall on the passenger side. It's fuses will be in the under hood fuse box.
Check for a blown TCC (Torque Converter Control) fuse.
Could the heater door actuator be bad? What is the cost to replace? This Grand Prix has a dual-zone climate control and when the AC is on, the passenger side vents often change to heat when the control is still on cold.
Up under the passenger side plastic protector - almost behind the glove box. You will see the air tubes & wires running into a black box there - that is the climate control module.