Jeep heating system

Do the blend doors work correctly in automatic mode?

PS You are posting in HTML which will make some RAMJ+W members cranky, it is best to use plain text.

=_NextPart_000_008F_01C6168F.18860AD0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Have a 2001 Jeep grand Cherokee limited (so far so good but the heat = system sucks now), blows hot air on one side then cold on the passenger = side. If I adjust the temp higher, it blows hotter air and then after a = while (10 min. max), the cold air will return. I do not use the AZC, = just manual mode. I have taken this vehicle to the original dealer 8 = times now, but all the times it works for maybe 1 day and then goes back = to the same antics of blowing cold air on manual mode, either the cabin = in too cold or too hot, as adjustments in temp to hot will eventually = have to reach above 85 degrees, otherwise cold air comes out of the = vents. Any suggestions? The name of the dealer is Ramsey Jeep in New = Jersey. They have not fixed the problem for 1 year. This past week I = have taken the care for the problem to be fixed 4 times. Any advise? One = thing is for sure I will not purchase any car from Ramsey Jeep again.

Thank all for their help. Maybe this next dealer will fix the heat problem. Much obliged to all for their responses. Markus.