Hi, new zj owner here. I just took possession of a 93 GC. I am trying to get it into shape. I have performed an oil change and a few other simple things. I have the perform service flashing on the computer and I have followed the instructions in the manual to reset it. Key on, press select and set and hold. I have held this up to a minute with no reset. Do I have something that is still indicating that it needs attention or is it just being stubborn. I can set the day date and clock with no problems. Also the overhead info computer is screwed up to, sometimes it's all garbled 0"s, sometimes nothing, sometimes it works. Any help would be appreciated.

 

I just got my service done on mine and had the same problem, however I figured out once you get to the perform service on the screen just hit the set button, not both and mine reset. The top one I still have the same problems so I cannot help you there but if you figure it out I would love to know also. Hope this helps.