does gm have a vehicle that has v10 dohc ?

i just got this new job and i was walking by some parts and the tag said general motors. at first glance i thought they were fords dual overhead cam heads, but i got closer and saw 10 spark plugs along with 10 exuast / intake ports so obviously it was a v10. i was wondering if anybody has any idea what these are going in or to.
 
see i know that gm doesn't really have any dohc other than really the caddilac, oldsmobile not sure if the buicks are dohc. but anyways none of those are v10s. and i am 100 percent sure those are general motors. does th xlr by caddie have a v10? maybe gm has something up there sleeve.
 
I remember seeing something last year about the Escalade having a performance option of a V-10, didnt know it was OHC. Oh yeah, it was on that show Rescue Me when that crazy chick bought one for whats his face, Dennis something.
 
i just got this new job and i was walking by some parts and the tag said general motors. at first glance i thought they were fords dual overhead cam heads, but i got closer and saw 10 spark plugs along with 10 exuast / intake ports so obviously it was a v10. i was wondering if anybody has any idea what these are going in or to.
Trailblazer 5 cylinder heads.