2000 Oldsmobile Intrigue "ac unit pulsating" Questions

AC unit would not even light up. We checked all the fuses, even tried pulling it out and checking the unit itself. Husband called dealer about replacing $1100, no way to get that, then the starter and

...unit w/new sock and pulsator, one should replace fuel filter, and fuel injection system. The new, strong pump will likely blow apart all of the aged, brittle plastic inside the plenum.GM AC/Delco ...