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I purchased a nice 06 TB LS for my daughter. It only had one of the original fobs, and it was worn down and only worked intermittently - so i bought a pair of replacements, and i can actually program them just fine. The problem is, after programming, only ONE fob will work at any given time. So if i program one of thsm, it will test and work, but the original no longer will at all. And if i program the second new one, then ONLY it will work, not the other new one. If i program both of the new ones at the same time, only the last one handled will work...

So, is there a way to wipe out any existing fobs, and basically start from scratch?
 

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2007 chevy trailblazer_ss_lt
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When you initiate the FOB programming it erases the memory. All FOBs that you want to work must be programmed at the same time. I don't remember the procedure but you can go from one FOB to the other without starting over.
 
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