It's still possible in 2021 !
Today I visited Earnhardt GMC in Mesa, AZ who successfully obtained the VCI codes needed to add the RPO code UK3 to my 2005 Silverado LS. I now have a fully functioning DIC (aside from instant fuel mileage) and radio controls !!!
Since this mod is kind of dated, I expected prices to be higher than previous posts. So here is what it cost me in 2021:
Clock Spring (I installed) $215.72 from GMpartsonline
Steering Wheel (I installed) $180.00 from eBay
Programming $232.56 Earnhardt GMC
You might ask yourself why do this mod on such an old vehicle. Wellll, I purchased this truck back in 2005. It looked new and had super low miles, but more importantly it was the first vehicle I got to buy after selling my very first car which was given to me by my dad. Around 2010, I got into imports, bought a Honda and gave the truck to my dad. Throughout the years I would go through several cars but still would help him work on the truck here and there whenever something came up (alternator, radiator, brakes, leaf springs, water pump, etc). Fast forward to 2021 and now I'm a father with 2 boys. With COVID leaving few options for family fun, I decided to sell my 2015 Chevy SS sedan and purchase a 2021 Jayco camper and a 2021 GMC AT4 Duramax to haul it with. My dad (the most frugal person I know) liked my new truck so much he did something he had never done - bought a brand new truck. He picked up a 2021 Sierra Denali also with the Duramax. Both great trucks! With his new truck he had no need for Ol’ Red and I happily took her back as a project car. My plans are to drop in a LS3 and pair it with 6L80e which is what came stock in my SS. With a cam and a few bolt ons she will be a rocket ship.
Good luck to anybody who tries this mod. It definitely takes persistence when you're speaking with dealers and explaining what you're trying to do. I was told that what I was trying to do was impossible by a local Chevrolet dealer. After hearing no from most of the metro Phoenix Chevrolet dealers I got the very late idea to give the dealer I just bought my new GMC from a call. Our salesman Kerry put me in touch with his top service guy James who took care of me. It might have been a little pricey, but totally worth it in my opinion.
P.S Like the guys before me, I was left with 2 extra two plugs that my previous clock spring did not have. As noted, the 8-pin plug is for quadrasteer. The other is a 2-pin neon green plug which apparently is for a heated steering wheel. Like the 8-pin plug, simply tape it up and secure it with a zip tie to the side.
Cheers.