2002 denali 6.0 - serpentine too short?

[SpareParts]

Rock Auto lists the same belt for non XL also.
So much conflicting info out there on everything.

https://www.oreillyauto.com/detail/c/acdelco/belts---hoses/belts/serpentine-belt/c92a524fe09d/acdelco-serpentine-belt-6-rib-94-13-16-inch/acd0/12576447/v/a/4308/automotive-suv-2002-gmc-yukon-xl-1500?q=serpentine+belt

Found this on Amazon.

I just had to return an item from this seller that was not the product described in the posted ad.
It was described as an accessory belt, but turned out to be an air conditioner belt, so not the belt I was looking for.
Need to get your information corrected, as an accessory belt is the serpentine belt that drives the alternator, water pump, etc... Not the air conditioner.
The belt itself was of good quality, and thus the 2 star rating as opposed to a 1 star rating

 

[Fless]

Looked at the ACDelco store (https://parts-catalog.acdelco.com/acesCat.php) and they list that as the A/C belt:

 

[anarky321]

we replaced tensioner and idler as well - all i can say is we got 2 different Dayco 93" belts they were both too short

 

[Fless]

I'm with @Doubeleive -- bet the alternator isn't the same as OE. But we don't know what it is.