Found this: OBD-1 Diagnostic Trouble Codes (gmtuners.com) Hopefully helps?
Some 10 years ago I posted a complete copy from Cadillac booklet but the links are unfortunately ded.
Don´t go there. Very hard t get it registered. If you fail it´s all for nothing and it´s not cheap.
There was one original ETC -95 sold at auction yesterday for 76.000 SKR. Just over 10k swedish mil.
Yes. The cluster (CPS) services DIC for power (55V) so when the cluster loses it it all goes black. A fryed capacitor or..... I have no clue.😄
A used works fine IF the odometer come from a car with LOWER miles. Mine did. The odometer will allways show miles from the odo with the highest miles.
Plug´n Play (IF you find the screws that are nicely hidden....)