Arduino loose time when send sms

Hello, I have a GPS shield that sends an sms every 1 minute, it collects the information correctly before the GPS sync. sends the date and time in this format 20150320101560 but after the GPS synchronizes sms lose these date 01560 values then the sms only shows that datetime 201503201. When I run the AT command in the terminal I see that the GPS is showing all information. I want you to correct the problem so that the sms is sent using the full date and time