GC Services gives General Contractors the ability to track their projects online. Any Prime Contractor that is listed on the Plan Holder List can obtain a unique User ID and password to access the list of Sub-Contractors and/or Suppliers that have shown an interest in bidding their projects. The information provided to the Prime Contractor is maintained in real time and includes the following information: business name, contact person, phone number, CSI division, and trade the Sub-Contractor and/or Supplier represents.