Cadillac: car repair, cadillac sedan deville, body control module

Question
Dear Tom:  I owned a cadillac sedan deville 1992. Diagnostic test was conducted using warmer off buttons on ac/heater panel. the codes were.(.8.8.8) (..e.) e30, e91, e98, (..f.) f30, (.7.0) Tom, I need  to know what the codes mean and a estimate on price of repairs.  

Answer
8.8.8 = beginning of test procedure.

E30 = Idle speed control motor out of range.

E91 = PRNDL switch problem.

E98 = Par to Neutral and Drive to reverse idle speed control problem.

F30 = climate control panel to body control module module (BCM COMPUTER) data problem.

70 = end of test.

What you need to do is CLEAR all these codes and see which ones come back.