What does it mean when the words PART TIME pop up on the dash of my 2004 JEEP GRAND CHEROKEE

SOURCE: engine code 95 jeep grand cherokee lerado

12 is a battery disconnect within the last 50 start cycles and 55 means the end of the diagnostic cycle.  Basically the computer found nothing wrong. The 12 code may seem incorrect if you haven't disconnected the battery recently, but from my experience the 12 code shows up almost all the time regardless.

SOURCE: 2004 Jeep Grand Cherokee - problem with power windows/locks

This seems to be the affects of a bad dinamo charging your battery . If you take a appart the dinamo you should fine a part called in mechanic terms "the bones" they look like 2 black magnets with a wire coming out of them . They are not expencive and you should not change your dinamo untill you try this first a car dinamo is very expencive .

SOURCE: how to change fog light bulb on 2004 jeep grand cherokee

There's a small space behind inside fender. You can get your hand in there to grab and twist the back of the bulb to release it. You need a flashlight.

SOURCE: windows and lock wont operate on a 2004 Jeep Grand Cherokee

I just had the same with mine, pull the rubber boot back on the drivers side front door and look for a severed wire, mine was black...simply spliced the wires back together and problem solved!

SOURCE: 2004 Jeep Grandcherokee - Transmission Maintenance

I'm going to guess since you didn't mention which fluid...Transmission?
First find out which unit you have (usually an id tag on it somewhere ) Then look up what kind and how much fluid in your owners manual (usually around four quarts...unit holds more but you can't remove it from the pan) Remove all pan bolts and lower pan. (some units have a drain plug, use it first if you have one ) you will see the filter attached to the valve body. remove it and install the new one, Make sure all gasket material is removed from pan and trans. Clean any metal etc from pan and internal magnet (there is always some in there but should not be a ton of it) Then put pan and gasket back. Make sure you can turn each fastener easily to make sure they are not cross threaded and only tighten them after they are all in there. Bolts do not have to be tightened down like they never should be removed again (snug then a little bit more)tighten in an X pattern not a circle.Replace about half of the fluid with car off, then put in remainder while running. Put your foot on the brake and shift to reverse then drive a few times then check fluid level.Low is bad, a tiny bit (less than half inch) over is OK.
Drive for a short ride, check again for leaks and re-tighten if any are found.
If trans was exceptionally dirty and yours has a drain plug, I recommend that you use a generic oil on the first change, then in a week, drain oil again and re-fill with good brand name stuff. and perhaps a bottle of lucas conditioner.
Good luck!