I like the OEM Plus modification philosophy. Basically you make your vehicle yours with OEM factory or dealer installed optional equipment installed as the OEM, in this case GM, would've done it. When it's done nothing screams "I'm aftermarket" except possibly the stereo and CB.
Line-X was a must have for a clean bed like that. The NERF/Step bars make cab and bed access easier for the girlfriend that isn't 6'6". Both are dealership options.
Those are definitely GM wheels. They're even year correct... 17x7 RPO N89 on the 2005 Silverado rather than the 16x6.5 PY0 wheels it came with from GM. The offset on the Hummer wheels made her look funny... aftermarket wheels don't have the understated clean look of OEM.. they're all about "look at me". I just want someone to look at her and say that's a nice clean truck that looks new despite being 14 years old. The new front leather seat covers and the little modifications like footwell lighting using GM brackets that were already there and GM wiring from an 01 Sierra in a local salvage yard are indistinguishable from factory installs.
1967-2000 only... GMT800 manuals are not even on my radar. I may eventually scan the 2005 Unit Repair books but I'm not ever doing the service manuals and the TURM will not happen anytime soon.
The T800 chassis isn't the same as the older trucks... fullsize SUV Suburban/Tahoe/Yukon service manuals are different from the Silverado Sierra light truck manuals. I believe there are only three volumes of SUV service manual plus the transmission unit repair books.
Bite the bullet and buy em from Helm, if they have them in stock, or pay attention on evilbay...
Just make sure you aren't paying more than you would for brand new from Helm for a used partial set... This set is under $500 and it's not beat to death...
https://www.ebay.com/itm/2005-Chevy-...oAAOSwik9bddyJ
The Manual Mafia had listings for over $800 on evilbay for well loved dogeared stacks of 2005 Silverado Sierra service manuals that were missing at least one or two volumes and even some covers. Helm doesn't sell single volumes of a multi-volume set.
I have a set of manuals for the Silverado/Sierra from Helm. They are still in print but they are not cheap. Mine ran somewhere just under $600 for all eleven volumes brand new from Helm... two volume Transmission Unit Repair manuals and nine volume service manual set.
At $100-$150/hour dealership shop rate the manuals will pay for themselves.