Chevrolet Repair: Transmission leak, worst case scenarios, chevy tahoe

Question
What would cause an extremely slow transmission leak on a 2000 4WD Chevy Tahoe Limited? How is it fixed? How much harm could it do? What are the best and worst case scenarios?

Answer
HI JASMINE.A SLOW LEAK IS USUALLY CAUSED BY THE TRANSMISSION PAN GASKET,COOLING LINE SEALS OR REAR TAIL SHAFT SEAL.THESE ARE NOT THAT EXPENSIVE OR TIME CONSUMING TO REPLACE. THIS IS THE BEST CASE POSS.  THE WORSE CASE IS THE FRONT PUMP SEAL.IN WHICH CASE THE TRANS WOULD NEED TO BE REMOVED TO REPLACE THIS SEAL [NOT COMMON]..THIS IS NOT DANGEROUS UNLESS THE OIL GETS LOW.SO YOU WILL NEED TO KEEP A EYE ON THE TRANS OIL AT ALL TIMES.MAKE SURE TRUCK IS RUNNING AND WARMED UP TO CK AND [DO NOT OVERFILL]. RUNNING IT LOW WILL DESTROY YOUR TRANS..MY ADVICE GET FIXED AS SOON AS POSSIBLE OR FOUNDS ALLOW... IF YOU NEED MORE INFO DONT HESITATE TO GET BACK TO ME. ALSO, WHEN YOU LEAVE THIS SITE, WOULD YOU PLEASE RATE MY ANSWER,THIS WILL HELP ME. THANK TOM.