[Gmecm] eeprom programmers HELP

[kctobyjoe1]

Have a 92 Riv. been on here before begging for help
Got new MAIN computer NO EEPROM
How do you know for SURE the EEPROM is BAD
I originally suspected BCM
I can reset ALL codes but those BCM is responsible for
ERROR shows instead of mileage
EVERYTHING else works
Anybody stock eeproms how much to buy & reprogram
I understand they are VIN dependent
could care less what it states in mileage
in PA NO INSPECTION due to NO mileage reference ;-( -and cant do an 
emissions test due to same
Risk getting a ticket (big bux) here in PA if I get pulled over ;-(
kc