The gauges didnt work we check all the fuses and they are ok

didnt check fuses first
the cluster can be bad or the communications to it bad.
see the service manual see the level wiring end to end?"

you used voltmeter at the pump?> or just didnt here it run
do say this...please. details, matter....
it told you low fuel is it? is the fuel gauge near "E"
why not state that first.?
dead gauges, be 1st right, smacks of gross power loss.
right>? not clear to me what no gauges means.
but the voltmeter is #1 no?

did you tests fuse that look ok. fuse that look ok can be bad.
no gauges, means all dead, no movement,
well the fuel gauge must work , does it, does it match reality?
cranks but never runs. good input there.

does not run for the jeep 3 seconds.? (ASD rules)
no 12vdc power to pump, when cranking,?
01 grand WJ jeep usa.
is the skim lamp off, the cluster lamp for SKIM security is first.
it must go out after key turn on, or it will never run, ever.
I can help.
WJ jeep
this jeep has a voltage gauge, it must read 12v keyon
if not power is lost, or battery low.
if cranks that tells me the fues blew.
skim cuts spark and fuel, not cranking btw.
2002 cluster
http://jeepdied.com/cluster2002GC.JPG
see that lamp 12, if stuck on car will never start but will crank.
the lamp falses if skim is not working or stays on for ******* key.
we SCAN ALL CARS NOW.
IF You can not scan a modern jeep then it can near impossible to diagnose (a hard cold fact)
IF the ASD fails to work, the PCM tells you every time
all 8 ways for it to fail.
but that takes a scan tool (any modern scanner works,)

http://jeepdied.com/no-start.html

check in line fuzes at battery

be sides the fuse 2 other things can cause your gauge not work,1 the sender unit 2)the receiver unit

for both gauges not working it must be the circuitry behind the cluster. A qualified technician will need to look at this

The inline fuel pump fuse on the passenger side firewall is good? Are you jumping it with 12 volts at the test lead or the fuse?

OK, check the fuse box to see if the fuses that are designated for these instruments are still in working order. if the fuses are ok, remove the instrument cluster from the dash and, check the back side of the cluster board. pull all connecting plugs to check the metal contacts on the cluster board. try to straighten the plugs and re attached the wiring harness, this should revive the gauges.

if this dose ot produce results, replace th entire cluster.

have you checked the fuses to make sure you didnt burn any out?

if you make the contacts on the plug that connects to the thermo switch, does the fan work (both speeds?)?

if not, then it could be the fan control module or a fuse on there.

Well if you checked all of the fuses, then most likely the wire harness that is plugged into you gauge cluster from inside the dash either came loose or your gauges cluster is faulty and blew out. I would check to see if that wire harness came loose and if it didnt then your probably going to have to replace that whole gauge cluster. Check around on ebay then are pretty cheap on there.