I have a 2000 jeep grand cherokee limited edition 4.7 liter V8 2wd. Recently it has just died whilst driving on the highway 40mph city driving. It just died quickly and all the gauges went dead like there was no power. I safely pulled over (stress) and tried for approximately 10minutes to try to start it, I noticed the gauges did not come to life whenever I turned the key on to try to start it. then on one of my attempts to start it, the gauges came back to life and it started right away, I am not a mechanic but it does not seem mechanical, more like electrical, any help would be greatly appreciated in narowing down the culprit.

SOURCE: 2000 jeep grand cherokee quad drive but onlythe rear wheels turn

usualy you will only have two tires spin at a time even in 4 lo or 4high. those tires are going to be diaginal from each other tipicly. now since your vehcle is equiped with quad drive it may employ a limited slip rear differential to help it along. however this only afects the rear axle. now you can test it by jacking your vehicle up and setting it on jack stands. one for each wheel onder the axle tube on a good solid (concreat or black top) flat surface. then have some one you know and trust to get in the car and put it into drive . now you can actualy see what wheels are spinning or not.now is were the limited slip comes in if you have one rear wheel spinning and the other is sitting still the limited slip will engage and start the other wheel spinning . now this may bang until the other wheel catches up (note that the faster the wheel is spinning the harder it is on your truck)now be very carfull stay away from the wheels tires and all other spinning parts it is a machine it can hurt you badly. but give it a try and it will answer your question. be safe hope this helps

SOURCE: Guages when crazy. Now won't even try to start.

You likely have it repaired by now but it sounds like a classic case of oxidized battery or cable connection (sometimes mis-diagnosed as bad battery but cured with new (clean) battery)

SOURCE: 2000 Jeep Grand Cherokee

May b crank sensor! Try pouring cold water over crank sensor at the bellhousing when hot and acting up!

SOURCE: 2000 jeep grand cherokee limited starts in 3rd gear

oil pressure problem should be checked independently of other problems...Use a good accurate mechanical gauge to check. If pressure is good (no less than 15psi at idle hot (I prefer to see at least 20) check dash grounding, block ground and if OK, change sending unit. Dash and body ground can influence operation of shift and body control modules so indirectly your problem may or may not be related, depending upon what you find while testing. And it could turn out to be a defective module! They are expensive and just plugging new ones in may work, but then again, it might not. I might be totally incorrect on this...that's the value of actually being there instead of doing this by "remote control".
If you read the numerous posts pertaining to all vehicles, you will see that you are not alone with electrical problems...As long as the engineers who design this stuff, keep using "modules" to replace ordinary simple and reliable systems, we will continue to have these problems. Do some testing and I'm sure you will find a solution! (I'm still waiting for someone to make a program for a PC that will give a complete readout of every system in a vehicle, including exact faults instead of general system "suggestions")
Good luck

SOURCE: 2000 Jeep Grand Cherokee Electrical Problems

Sounds like the ECM....the computer that controls all the electrical functions on the car is having some major issues or needs to be replaced. A auto repair or auto parts store should have a diagnostic machine that will tell you for sure or you can purchase one for between $50 and $150