Not starting at all
I have a 2002 chevy Tahoe LS was running perfectly
fine then I parked it due to insurance issues for
about a month or 2 now it won't start we replaced
the battery ( it was 11 years old I bought the truck
used from a dealership big no no) we replaced the
starter and starter relay lights turn on fine but won't
turn over and no clicking I was told it could be a
grounding issue or the neutral safety switch but was
also told due to the security light coming on and
flashing on the dash it could be a computer issue
how can I test these things? I have 3 kids and really
need my truck going again