Chevrolet Repair: check engine light on 99 tahoe, chevy tahoe, scan tool

Question
how do i turn my service engine light off in my 1999 chevy tahoe?

Answer
well John, the computer will shut the light off when it detects the problem no longer exists (fixed. In most cases the technician must use a scan-tool to clear or erase the engine codes to "kill" the light. There is no other way. Hope that answers your question.