Nice work Louey

Ok we got the 12 code then 31 or 13 (I'm pretty sure it was 31)
I looked it up and 31 can be the
canister purge solenoid
camshaft sensor or circuit
EGR circuit
shorted MAP
and
turbo over boost( no turbo)
park neutral switch(3.3L)
MAT (Cadillac only)

that flashing light sure is fast compaired to other makes I've seen

any idea what to do next
thanks
hank