07 Yukon Denali is whatcha got so the suspension is RPO code z55 / AutoRide
not Magneride (z95). They’re an active, hydraulic fluid filled strut with valves that constantly re proportion the value of the rebound & compression cycles. Only the rear have air bags mainly for ride height adjustment, but they definitely soak up additional road imperfections.
The easiest way to verify your part numbers and options is plug into rock auto. Recently R/A started differentiating between the left & right sides. No biggie. Of all the OEM (lifetime guaranteed) front z55
you need to look at the RPO sheet on your glovebox door.
It will show z55 as well as some of the other suspension codes related to spring rates. Take your time and match up the suspension code on your glovebox door to the z55 listed for L&R on the R/A site.
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The rear autoride / airbag struts are easier to select. It appears as both rears struts are the same and they just assigned new part #’s.
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Paste up a pic of your RPO codes from the glovebox door if you need a hand