I picked up the 92 wagon last night. I have an OTC 4000 Enhanced scanner that worked on my 94. I'll plug that in and try it. I also have an OBD1 adapter for the PC but was never able to make it work on the 94. I'll try it again on this.
My CTS went bad and caused the car to run like piss, never put out a code (dont know if there is one) but EBL did say the car thought it was 32 degrees. Mind you it was over 100 that day. Replaced it bam done.
No guess work on anything, I see what the ECM sees.