Jeep Repair: Faulty Resistor and Fan Module, jeep grand cherokee, radiator fan

Question
Hi Kevin,

Coolant light came in my 2001 Jeep Grand Cherokee last week and coolant
was slgihtly below the full line.  My husband said it was fine.  The next day
the car topped out at 260 degrees and I parked it.  Husband added coolant
and within 5 minutes it was near 260 again.  Dealership said it had faulty
resistor and fan module.  Was told that extensive labor charge would be due
to replacement of resistor (sensor?) because it was behind the bumper in this
model and bumper needed to be removed to access it.  To replace the relay
package/radiator fan and the fan itself, labor was $398.  My questions are 1)
does it really require this much labor to access that relay sensor in this model
and 2) would an extra hour of labor be charged to install the fan module if
you were already in there replacing the relay?  It just seemed like an awful lot
of labor.  We are trusting that the parts / diagnosis itself was accurate.  
Thanks so much.

Answer
the main cause for the over heat would be a rad fan relay under the bumper cover.   the resistor would be for the inside fan  so unless u have an issue with the fan inside not working U don't need it.
U doubt u need the fan either unless it took a dump and shorted out the relay seen that happen b4.  Go buy a relay from jeep  about 90 bucks  remove the pass side headlight  U might have a hole there already  if not cut a hole through the plastic about the size of a deck of cards then U will see the relay right there 2 screws and its out. Replace it turn on the ac and the fan should come on with in 10 seconds  if it does U are done if not the fan itself has also shorted out.