I have a 2000 Jeep Grand Cherokee Limited 4.0L engine. The A/C and heat blows fine, but usually will not switch from A/C to heat or vice versa. Sometimes, since it's a dual zone climate control system, it gets stuck on heating one side and cooling the other. I checked the blend door and it is not cracked, bent, or at all broken (possibly replaced by previous owner). I replaced both blend door actuators while in there and put it back together. It's still acting the same.
Previously, I had a problem with the blower motor not running. I replaced the resistor with a used one and haven't had a problem with the blower since then.
Friday, December 28th, 2012 AT 5:58 PM