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: 129,729 (45,000–340,000)
79 people reported this problem
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Viewing 1 - 20 of 37 problem details
2004 Jeep Grand Cherokee 107,500 mi, Visitor
Heat and AC only blow on HI setting.
2004 Jeep Grand Cherokee 102,000 mi, Visitor
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 Cherokee 151,000 mi, Visitor
Blower only works on High
2003 Jeep Grand Cherokee 160,000 mi, Visitor
2nd time this module melted.
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
2001 Jeep Grand Cherokee 124,000 mi, Visitor
Blower controls would randomly turn on / off. Wire was melted near the resistor. Replacement took place on 02/2011 and cost $190.00
1998 Jeep Grand Cherokee 119,000 mi, Visitor
Blower only works on high
2000 Jeep Grand Cherokee 100,000 mi, Visitor
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 Cherokee 120,000 mi, Visitor
Wires at the heater blower resister burnt and melted the resister. Had to replace wiring and resister
2005 Jeep Grand Cherokee 145,154 mi, Visitor
A/C will come on and fan Wil blow only on highest speed. Not fixed yet.
2003 Jeep Grand Cherokee 117,279 mi, Visitor
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
2006 Jeep Grand Cherokee 102,470 mi, Visitor
AC blower only works on high setting.
2000 Jeep Grand Cherokee 200,000 mi, Visitor
the ac fan would only cool if the fan was on high. Now as of yesterday it has stopped blowing at all.
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 Cherokee 179,000 mi, Visitor
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 Cherokee 180,000 mi, Visitor
Motor works at high speed only.
1996 Jeep Grand Cherokee 213,000 mi, Visitor
Ac/ heater only works on the high setting
2004 Jeep Grand Cherokee 96,000 mi, Visitor
Air condition and heat only works on the high setting