what does it involve? - I know they might be a couple of topics already out there, but for some reason the search function isn't working, and DIC is too ...

I know they might be a couple of topics already out there, but for some reason the search function isn't working, and DIC is too short of a search term.

Anyway, I have an 04' Sierra SLE. No DIC, no steering wheel controls. All I have is hourmeter, odometer and trip which is toggled by the stem on the cluster. What is the process to make it be able to show all the info? Do i need to install the steering wheel controls or are there other ways? What would i need to purchase?

Don't search for 'DIC' then. Try searching the full definition 'Drivers Information Center' and you'll get plenty of results.

Installed DIC on 2010 Silverado

Upgrade to DIC switch

Driver Information Center (DIC) Install on late model Sierra

Thanks Austin,
From poking around i can only find information on the NBS (07+) upgrade, is it even possible with the old body style?

No, not that I know of. I have a 2004 as well and I don't think it's possible.

Have been contemplating the same thing and found the DIC switch was available from Hendricks Chevrolet online. They list it as being for 2003 to 2008 GMC Sierra. Haven't ordered the part but intend to call them to verify that the switch will work on 2006 and that it includes whatever wiring would be needed to interact with the trucks computer. The owners manual indicates the capability exists but only with The Allison automatic transmission. If it's possible to install in my manual tranny truck will post it here.

My brother has an 04, 1500 5.3 sle, with the full DIC, so I dont know about that allison part. If that does seem to work, let me know.