On my 2000 camaro one of my rpo codes comes up as option package 1 any idea what that is

 

If your referring to the RPO 1SA, that is a Preferred Equipment Group which includes
power door locks
speed control
remote trunk release
fog lamps
power windows w/express down
twin remote mirrors
leather wrapped steering wheel w/radio controls, transmission shifter and parking brake handle
remote keyless entry
theft deterrent system
body side mouldings
carpeted rear and floor mats