Cadillac Repair: 1985 Cadillac Eldorado fault codes, cadillac eldorado, decent condition

Question
I have a 85 eldorado that was in decent condition. The car's engine doesn't turn while being started.. These are the following computer error codes: 30/37/45/53/-1.88/.7.0 .

Please help

Answer
Erase the codes and see which ones return.

1. Ignition ON. Engine OFF.

2. Simultaneously push and hold the OFF and WARMER button on the climate control panel for 3 seconds and release them. After the codes display and you see .7.0

Simultaneously push and hold the OFF and HI buttons until E.0.0 appaers and release the buttons.

This clears the "E" codes.