car start with remote but not with key

My Buick Regal 01, I got my transmission replaced and i started having a problem with my car running and starting it with the key. and when i step on the brake it cuts off even with the key turn on.

Welcome to AF! Please post the body style and year of your car when posting. We can only assume from your profile that you have a 01 Regal. In addition, if this correct, please post in the correct forum. We appreciate your cooperation!