engine light stay on all the time. on 2001 Chevrolet S10

engine light stay on,seonddary air intake malfunction what is it and where is at on truck?

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3 answers
What are the trouble codes?
if s got the 4.3 take out battery and look in ur passenger fender.
had the same problem with my truck for months.
what a great location for fuses.
i replace many things yet the light stay on and now i need starter to start it always. 4.3 6cy.like fuel pressuse seniode, thing inbetween air breather and malfold. why wont it stsrt