AVS Addicted Member
Join Date: Sep 2005
Location: Des Plaines, IL
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If you've tried every code possible when using "AUX" as the source button, then the Dish remote just doesn't carry the code. As far as the "TV" and "VCR" source buttons, I'm almost positive you can't program cable box codes into those on Dish remotes (you can't on mine, anyway).
Many universal and learning remotes have a code which will work all or most of the Dish tuner features. Most also contain the code for the CM box, too (and it most definitely is a Pioneer cable box code).
But if you want to work every feature on the CM (guide, menu, info), you will definitely need a learning remote, rather than a universal one. As far as I know, there has never been a universal remote found that can control those features using a code - just channel, mute, number pad and volume.
(edit: I see that remote you have is one for a Dish DVR. In that case, you'd have to make sure you found an aftermarket learning remote that is specifically designed for DVR's - so you'll be sure to have all, or at least most of the same buttons.)