whats missing

[Bronze&Michelle Gonzales]

• I have a 97 gmc sierra k3500 w/ lift kit so i notice my truck isnt turning correctly feels off and i noitice i am getting to many alignments done so i look under and found something i been trying to figure out what part it is and cant seem to find it ill make another post showing more pictures 

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[thx1138v2]

How about some photos from outside the truck pointing to where this is located?

 

First guess is body or bed mounting bracket that is missing its mounting pad.

[Brian Lindsey]

i agree move the camera back some as we need to see whole area, it might be an old part they left laying in the truck, but cant really tell, kinda looks like upper spring bushing