Going by the manual there isn't really much to worry about other than oil and filter, air filter, and fuel filter until you hit 100k. That being said, if you want to take a bit better care of it I would tell you to flush the tranny, change the transfer case lube and front axle lube if it is a 4x4, rear axle lube, coolant, and spark plugs. A Gen 2 doesn't call for a tranny flush until 150k but I rather doubt it would last that long. 60k on the transfer case I think. The plugs WILL be okay but it's just a matter of getting them out before they freeze in there too much. Air and fuel filters every 30k.
My schedule:
Every 30k: transfer case, rear axle, air and fuel filters.
Every 50k: front axle, tranny flush, coolant flush, spark plugs.
