I have another PCM I picked up from the junkyard but didn't pay attention to what year suburban/yukon it was taken out of.

If you want to put this in the right place, I can upload it for you.
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2003 Suburban LT 1500 5.3L Flex Fuel RWD Automatic Stock
SERV. NO 12582605
HDW NO. 12580786
OS 12579405