[Schrade]

Your strobing interior lights are probably due to the faulty ign. switch (blazer/jimmy/bravada, etc.). That one causes quite a few ancillary problems, so try this...
Unplug the battery to clear the trouble code memory a couple of minutes, at least, them re-connect the battery, crank the motor, and check function of everything, W/OUT moving the tilt wheel! Anything that doesn't work still really does not work. But I bet it all does!!!