Just give it some time Joanne, it is Sunday and the gear head guys are probably working on their wheels and having a beer & sandwich right about now...Something I need to do too..
It may be best to list the codes, are we talking body codes or basic trouble codes?
Here is a list OBDII trouble codes from the Tech Info Section. OBD-II Trouble Shooting - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat
You can always use google and type in for instance "OBD II p0442 trouble" and voila info coming your way!