Dealer diagnosed ... need 4x4 motor and module ... 96 k1500.
Parts and labor $1120.
Where can I find a better deal for these parts?

Thanks.

GM parts on line will give you a good parts price.

How much did your dealer quote for parts and for labor.
Are you sure your dealer checked it out good?
What was the code?
I would confirm good wiring and fuse and power feed.
MT