It's Aug 2022 - and after reading this blog from 2017 - I felt confident this is something I wanted to do for my 2015 Tahoe LT (we're not trading in - so why not update, we had just bought a 2022 Suburban and liked these newer features).
I ordered all the required parts from WAMS, and color schemes for my vehicle - and the custom wire harness from HarnessDr.com Note: I don't work on cars - ever - but I felt comfortable knowing that if I had the tools, time, and patience - I knew the support was here if I got in a jam. So - moved ahead buying all the parts and reading all I could. Bottom line - I did it.
I added Radio / HMI 2.5 modules, 2016 programmed Denali Cluster for HUD ready, HUD System, Hud switches, and USB port under armrest, and the wire harness to make it all work from Phil at HarnessDr.com When I got stuck - Phil was kind enough to coached me on through to completion (via email). I was totally successful - but only thanks to everyone who contributed here and to Phil at HarnessDr.com
Everything I read, watched, all parts, tools etc.. are attached on PDF doc.
Note; highly recommend buy cluster wires from HarnessDr.com and getting equipment from WAMS.
You can order the rest of the items where you find good deals.
TECH NOTES:
When you tap into X51L fuse panel at X1; i recommend takin time to pull fuse panel out. There are two clips - just figure it out and get it removed - it makes a huge difference getting to x1 and for quick testing. When you tap into pin #3 (yellow) and #35 (red) -- just solder that joint and tape. Don't try using those clips - they don't work well and not reliable. Just peal back wire (careful not to cut) and then wrap your new wire around and solder and tape. The green wire going into cluster connector in open slot #21 (bigger light green wire) has a pin that clips in - so simple. Phil at Harness Dr provides the pin for the Green - so you're good. Just solder the two other connects and you'll be fine. This was the hardness part - and it really wasn't hard once you read Harness Dr instructions (that come with the new harness)
I didn't provide photo of project because we've seen all those before - I just posted a few photos of the detail wiring I had not seen before and had to figure out on my own.
Hope this helps!
2015 TAHOE LT upgrade.pdf
