can anyone crank your vehicles without a key? I realized that I could the other day. I need to replace the worn tumblers and have the new one rekeyed...fortunately I have the original key code that I got from my local dealer after I asked them if it was possible. since I have a 90 model they said that information is available. what is the next step in getting my new ignition key tumbler and does anyone know what the part number is? Also...getting it keyed. they said I had to go to a locksmith...is that right or can I key it myself? What about installation? I'm gonna have to take off the steering wheel but once that is done...what else? Lots of questions... 1990 GMC Jimmy 350/TH700R4/NP241/10 bolts, 4" skyjacker lift, 35x12.50R15 BFG All Terrains on 15x10 AR Baja's, Flowmasters.