Raymond that is not correct. There are lots of subchannels that have OTA info. See the below pics of my locals in MInneapolis
Dish carrries the guide info for 3 of the 4 PBS channels....including 2-4 which is 24/7 weather. Ironically they dont carry 2-3 which Dish DOES carry as a local under their former analog spot 17
11-2 is another one of those 24/7 weather yet Dish carries the guide
23-2 as you see the guide is off. Under 7:00 it says "80's at 8" 
so yes Dish does carry guide info for subchannels. And yes the Fox Mankato station (KEYC 12-2) does show Andy Griffith 5 nights a week 

Here is what I gathered from 
another site that shows all the OTA guide info Dish should carry
2-01     KTCA     TSID 0x0645, Subchannel 01 (DISH Channel 6353/8576)
2-02     KTCA2     TSID 0x0645, Subchannel 02 (DISH Channel 14060)
2-03     KTCI     TSID 0x0645, Subchannel 03 (DISH Channel 8580)
2-04     KTCI4     TSID 0x0645, Subchannel 04 (DISH Channel 14063)
4-01     WCCO     TSID 0x0631, Subchannel 01 (DISH Channel 6348/8571)
5-01     KSTP     TSID 0x0647, Subchannel 01 (DISH Channel 6347/8570)
5-02     KSTP2     TSID 0x0647, Subchannel 02 (DISH Channel 14788)
9-01     KMSP     TSID 0x0633, Subchannel 01 (DISH Channel 6350/8573)
9-02     KMSP2     TSID 0x0633, Subchannel 02 (DISH Channel 14787)
11-01     KARE     TSID 0x0635, Subchannel 01 (DISH Channel 6349/8572)
11-02     KARE2     TSID 0x0635, Subchannel 02 (DISH Channel 14785)
17-01     KTCA     TSID 0x0645, Subchannel 01 (DISH Channel 6353/8576)
17-01     KTCI1     TSID 0x0645, Subchannel 01 (DISH Channel 14061)
17-02     KTCA2     TSID 0x0645, Subchannel 02 (DISH Channel 14060)
17-03     KTCI     TSID 0x0645, Subchannel 03 (DISH Channel 8580)
17-04     KTCI4     TSID 0x0645, Subchannel 04 (DISH Channel 14063)
23-01     WUCW     TSID 0x0637, Subchannel 01 (DISH Channel 8574)
23-02     WUCW2     TSID 0x0637, Subchannel 02 (DISH Channel 14279)
29-01     WFTC     TSID 0x0639, Subchannel 01 (DISH Channel 6351/8575)
29-02     WFTC2     TSID 0x0639, Subchannel 02 (DISH Channel 14789)
45-01     KSTC     TSID 0x063B, Subchannel 01 (DISH Channel 8577)
The 3 bold ones if they could get fixed I'd be happy 

5-2 is now 45-5
45-1 is now 5-45