My Tahoe has rear A/C also, but I would suspect that the accumulator is the same for at least 03-06 and possibly 01-06 Tahoe Yukon Suburban Escalade....as long as they all have rear A/C.
The factory original one on mine is in place as well. I'll bet your accumulator was replaced at some point in the past and they did not replace it or move it onto the new one? I will look at an 06 Yukon next time I'm at a PYP yard to see if I notice any last model GM SUV's without the insulation jacket.
They all don't show that part for my year.... ( I ordered it anyway) Geeze $10 to ship, but what the heck..... maybe you can take a photo of yours? I'm just curious...
How does that insul wrap mount? Just zip tied on there?