ISUZU OEM REMOTE PART NUMBER: BAB237131-013 - 2-90101-701-0

Here's some places to get a used OEM keyless key fob...many places sell a clone....I wanted an OEM... Tried to buy new from Isuzu dealership but no go, not available. So I didn't mind used.

Here's a bunch of used on ebay:
http://desc.shop.ebay.com/i.html?_nk...sacat=0&_rdc=1

Here's another source:
http://www.originalkeyless.com/produ...&categoryId=13

If it has that part number, it works. They should come with programming instructions, if not, I still have mine and it's really easy.
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Definitely order the metal brackets from Tim at SBC, they're great. I live close enough that I had him actually install them. I took pics of him doing it, those pics are in my gallery, may help you visualize what the brackets look like and where they go. Go to this page, and scroll down until right after the pics of models & matchbox cars.
http://www.vehicross.info/gallery/sh.../3/ppuser/3558