2005 GM cluster. Odometer Error turned into no bus communication.

This is a 2005 Instrument cluster from a full size GM. It originally had odometer error. The owner accidentally installed the new eeprom in the 56585 location and caused the vehicle to not run.
More info below ↓

Below are some of my favorite tools:
Hakko Solder Sucker:
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Uni-T Power Supply 30V 5 amp (cheaper on ebay, don't pay over $100):
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The flux I use:
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My favorite soldering station (cheaper on ebay, don't pay over $50) :
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Soldering mat:
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Microscope:
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Hot air station #1 (I use the industrial version 8900):
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Hot air station #2 (cheaper)
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Solder:
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Solder Wick:
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Multimeter:
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