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What is your question?
'99 Lumina LTZ with 3.8L will not pass inspection do to 3 codes not resetting. Car has no check engine light on, has no trouble starting and runs good. Tech tried driving the car 100 miles and it still did not pass. Tried to reset the computer and drive again, still no check engine light but it still would not pass.
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Is the bulb for the check engine lamp functional? Turn the key on, but do not start the engine. The light should illuminate as a bulb test. If the lamp does not light with the key on, even for a few seconds, the bulb has failed. A code will only self reset after the condition for setting the code has been corrected. Then the codes may be cleared with a scan tool, and then the vehicle should be driven to reset the diagnostic monitors in the computer.