New to me 1998 Silverado Extended cab

[Super_Dave]

Here is the CD Player I am having issues with. It's the remote version, since this truck actually came with a Cassette Tape. . . yeah, I know. Afraid to actually run a cassette in it, as my tapes from back in the day, are disintegrating.

Not sure what the skipping, slowing and speeding issues is and whether it's something that can be fixed or needing to be swapped out. Not looking for after-market; want to keep it OEM as much as possible.

Also, all the buttons below the Cassette and to the right of the volume knob, need the lights in the circuit board de-soldered and replaced. Lights are less than $10, and an afternoon on a slow day.

The FAN knob is as possessed as the CD. Wants to work at different speed on all settings but Low, which doesn't work at all. Sometimes the other settings wont work but I turn the knob and they will. . . but not always the speed it should be. Bad contacts? Bad Potentiometer? Dirty?