Failure in the blower motor power module (automatic temperature controls) or resistor block (manual AC) may cause the heater blower motor to work only on the high setting. The connector to the power module/resistor block is known to overheat (and sometimes melt). The connector or terminals should be replaced; a replacement connector is available.
AC Blower May Only Work on High or Melt Connector at Blower on Jeep Grand Cherokee
Average mileage: 129,640 (45,000–340,000)
77 people reported this problem
37 people shared problem details
2004 Jeep Grand Cherokee107,500Visitor
Heat and AC only blow on HI setting.
2004 Jeep Grand Cherokee102,000Visitor
ac/heat only blows out on high, there are no mid-level blow levels
My experience with the ac blower connector melting is one of the flaws in that year of jeep. I simply cut that connector out and put a connector from Dorman® Tech Choice™ - Blower Motor Resistor Connector Part # 973-304 $9.99 can be purchased from Orielly auto parts or online at Dorman.com.. Replaced that connector and I have (NOT)had that problem again. One of many poor designs flaws from Chrysler.
2006 Jeep Grand Cherokee151,000Visitor
Blower only works on High
2003 Jeep Grand Cherokee160,000Visitor
2nd time this module melted.
2001 Jeep Grand Cherokee124,000Visitor
Blower controls would randomly turn on / off. Wire was melted near the resistor. Replacement took place on 02/2011 and cost $190.00
2000 Jeep Grand Cherokee100,000Visitor
I just needed another connector installed and made the mistake of taking my 2000 jeep to Suncost Chysler in St. petersburg FL. After they were done with my car it cost over $1800.00 as they broke my vent doors after replacing not only the connector but the resistor. It now required removal of the dash to fix vent doors. All these systems worked fine when brought into Suncost. After they removed the dash they claimed the condenser was leaking freon. This car could freeze your legs before they got ahold of it.
2002 Jeep Grand Cherokee120,000Visitor
Wires at the heater blower resister burnt and melted the resister. Had to replace wiring and resister
1998 Jeep Grand Cherokee119,000Visitor
Blower only works on high
2000 Jeep Grand Cherokee200,000Visitor
the ac fan would only cool if the fan was on high. Now as of yesterday it has stopped blowing at all.
2005 Jeep Grand CherokeeVisitor
The blower would only work on high, then when turning on Ac I smelled something burning turned it off now the fan will not come on at all and won't even go to the high setting
2006 Jeep Grand Cherokee102,470Visitor
AC blower only works on high setting.
2005 Jeep Grand Cherokee145,154Visitor
A/C will come on and fan Wil blow only on highest speed. Not fixed yet.
2003 Jeep Grand Cherokee117,279Visitor
A/c shuts off and I was able to get it to go back on by turning it off and on again bit the last few times I couldn't get it to come back on so I waited a couple days and I today turned the heat on and the heat came on and then it to shut off and then it can back on by itself and went back off again
1996 Jeep Grand CherokeeVisitor
Heater blower only runs on high,
Blower only works on high. It used to not work on low but now nothing works but high.
1996 Jeep Grand Cherokee179,000Visitor
Air only blows on high. I refreshed the coolant for the AC which kept it cool for a time but not a whole cans worth. After another 3000 miles the AC barely blows cold air.
2005 Jeep Grand Cherokee180,000Visitor
Motor works at high speed only.
1996 Jeep Grand Cherokee213,000Visitor
Ac/ heater only works on the high setting
2004 Jeep Grand Cherokee96,000Visitor
Air condition and heat only works on the high setting
This problem is constant, the heater/AC blower does not work at any speed when when turned on....
Air condintoner fan ONLY work on high, as soon as I turn fan lower, the AC turns off altogether...
My fan has 4 position settings and just started only working on high. Does not matter what zone...
I have a system with only a single control for the vehicle, not one for each side. The blower...
The blow only works in the defrost mode. Is it my blower motor resistor