questions on 01 blazer

bought a 01 blazer in january with 12k miles on it. since then put on about 4k miles. had to have the tie rods replaced about 2 months ago, and yesterday had it checked because it squeaks quite a bit from the front when you go over a bump. was told it needs new bushings, to the tune of 8 or 900 bucks. was also told that this, and the tie bar replacement, should not be necessary on a vehicle unless it had a good 80-120k miles on it. that this could possibly be a floodie. waiting on the carfax return to doublecheck, but are there any other reasons why these fairly major repairs would need to be done so soon?