I get that my CM ALL4 displays a number for my service interval on start up, but what does that mean? How long until my next oil change? How long in between oil changes? My service records say I had an oil change at 11k and now I'm at 17k. On start up it says 7000 miles and a picture of a car. Thanks!

 

It is telling you 7,000 miles until the next service is due. That may or may not be an oil change. You would have to dig into the OBC to see which service is indicated. Instructions are in your owner's manual.