When I had my hypertech handheld programmer, it only worked for my year (2000). The model years were 98-99, 2000, then 01-02. The only handheld scanner that I have heard of to delete rear O2's is the predator.
If you have a handheld scanner, then you would have to delete the code everytime you start the car. You should look into getting O2 sims to get rid of the SES.
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1999 C5 FRC: 12.7@114
2008 TBSS: 12.48@108
2017 Silverado 2500 do you even lift breh?
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