Hey Ya'll
When I do the self diagnostic I get these codes. This is when you hold down the Odometer Reset and turn the Key to On. The gauges go nuts then codes will display on the dash read-out.
Here are the codes, does anyone know what they are for???
C 447
S 127
i 285 (not sure what the "i" is, see Picture)

I have pictures also.

Last Thing: Looking to by a Code Reader or Scanner, What is a good one??