where to get diagnostic help.

93 Lumina 3.1

where can i take my car for a diagnostic scan, that won't charge an arm and a leg?

93 is obd1, not many places will do it for you. find an independant shop and have them do it for you. OR, jump the diagnostic center and post your results here, im sure one of the mods will give you the meaning behind the codes. i believe autozone.com has code lists as well. I actually had pepboys do it on my 92 z34, but they charged me extra. now i have a personal mechanic "friend of a friend" that does it for me for free "cause i bring him alot of work"...