I just started my first job as a technician at a dealership and I feel like they don't take me seriously?

My auto tech college told me the for dealership near the parts store I work at was possibly looking for entry level techs so I went and applied and got the job. I've been there around 3 weeks now I expected to start at the bottom of the later with oil changes and tire rotations but i don't get any jobs of my own what so ever. All the other technicians are master techs and none of them seem to know why I'm there They all thought I was doing some kind of job shadowing program but I was hired under the impression I was going to be an entry level tech. The uniform guy told me he was going to order my uniform a week ago but today he said that my service manager told him not to because I'm a temp or an intern or something but no one ever said anything like that to me when I was hired. I never get my own jobs and I get paid hourly. Once in a while someone will ask for my help or let me do one of there oil changes. Other then that I just watch everyone else work on stuff. I take out upon my self to clean the shop and sweep up oil dry but no one ever tells me to. The newest guy there besides me told me about the online ford training classes that they enrolled him in shortly after he started but when I asked my service manager about them he acted weird about it and told me that might come later on down the road. Some might think it would be nice to get paid to do nothing but I just feel miserable and useless. I wanna show them what I'm capable of but they don't give me any chances

After your schooling you need O J T On the Job Training -- grin and bare it.
In Obama's economy be thankful for a job…

You have only been there 3 weeks. Talk to use in 3 more months.

Basically, you are on probation. They are going to give you jobs they want you to do to see how you perform. As you do better and better, they will give you more.

They have given you a chance. They hired you, that was your chance. Keep working hard and they will give you more.

If you can't get the broom-pushing part of the job right, they don't want you doing other stuff.

A fellow working guard duty as our company's front desk said to me, "They insist I wear black socks. I don't get it. Why does the colour of my socks matter?" I told him, "It's a test. If you can't even get your socks right, they don't want you. They expect you to follow directions, and not make exceptions unless you are told to."

At our farm, if someone wants to work here I have him go near the horse stalls. One of the stalls will have not been cleaned. If he picks up a shovel and gets to work without being told, he's okay. If he turns and walks away from it, or makes remarks about the smell, he's gone!

To show you are worth your pay, do extra sweeping, make sure tools are cleanly wiped off and put away, and don't touch any mechanic's personal tool set without permission. As you already know, attention to detail is important in mechanical work. They are looking to see if you've picked up the parts of the job that were NOT taught in school.