If the engine is reaching normal temp, you could have air in the system and the radiator could be low on coolant.
SOURCE: 2001 Jeep Grand Cherokee which fuse controls heated seats?
Fuse # 20, located in the Junction Block (interior, drivers side). This is a ten amp fuse.
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Read the information at the above site. The TSB (technical service bulletin) may be of interest to you.
SOURCE: Heat/AC Blower fan speed only works on High
Alot of people have the same problem with the fan switch and blown bulbs. There really is no fix for this. Jeep really screwed up when designing the heater control assembly. The cheapest solution is to buy another unit off Ebay. Can always go to the dealer but be ready to PAY for there mistakes.
SOURCE: Heat/AC Blower fan speed only works on High
hello, this sounds like a bad blower motor resistor!! its cheap and easy to change..if you need more info on locations let me know,, good luck.....marty
SOURCE: No heat
Check to ensure you have coolant/water in the radiator. No fluid means you can't transfer heat from the engine to the heater core...
SOURCE: 1996 jeep grand cherokee blower works but no heat
Since your blower is working and it is a heat issue,thats where we'll
start,First thing is have you checked the coolant level in the radiator when
engine is cold,make sure it is filled to top,next verify you have coolant in
reserve ,Start your van and get it up to normal operation temperature,If your
heat gauge on the dash works correctly it should be 190 degrees,Now lift the
hood and locate the two heater hoses going into the heater assembly at the fire
wall,Both hoses should be hot to hold on to,if both are hot and no heat inside
your problem will be the blend air door in heater assembly.
if neither hose
is that hot you need to replace the thermostat in the engine to get it up to 195
degrees.
if one hose is hot and one is luke warm then the heater core is
blocked and to blame. hope this helps you.
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