GM/Hummer Parts Number List?

[myrddin]

Anyone have a diagram parts list for the Hummer? I only ask because I was about to buy this part #12450166 and # 12450047 from the dealer

12450166 for 110.00
12450047 for 5.34 each

GM Parts Direct has them for 63.05 and 3.03

I guess I would like the ability to search out my own parts for now on...

I also need to know for sure that I am ordering what I need...

Should be 12450166 - Driver side power seat adjuster switch (seat back and bottom 2 in 1 switch).

And - 12450047 should be the 12 volt caps we have on our 12 volt plugs... I want to replace all of mine.

Let me know what you guys use?

When I worked on one of my other cars I had some software loaded on my PC that had all the part numbers and it also had service info...
I forget what it was TIS? Or something... been too long. But it was app like and had a search feature with diagrams and part numbers with service steps (like change belt steps 1-9 or torque value or if you see this happen look at this)... anyway I just wanted to ask... I do not want to pay twice the cost at the dealer if I can avoid it.