Just got the 03ss running... But the dash is being stupid... I got tcs light airbag light and brake light staying while in the dic security change oil low brake lights cycle thru... Then when uder full throttle service traction pop up........ The security was disabledin the pcm... The tune was by intense.... As far as oil goes its fresh... Brake fluid full...so idk whats wrong or what to check

 

BCM, maybe.
jusrt replaced mine bought it from Kragens and has it programed at the stelership for 100 total cost, 210