Hooked battery up backwards in my 1990 suburban now no spark or fuel

Question edited for clarity.
Question moved to model category.

The first obvious thing to do it check for lights left on, dome light, hood and trunk lights.

This is how you test for what is causing the parasitic drain.

https://www.fixya.com/cars/r29903527-parasitic_draw_car_batteries

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Ign module could be the problem do you have spark when cranking. If you have spark can you hear the fuel pump running while cranking. Let me know

No. Replace the Engine control unit that was destroyed when you reversed the polarity to it.

fuel lines hook up backwards problem solved...

The 1990 Chevrolet Suburban has the most common hook-end wiper arms. Locate and press the tab or button where the wiper blade is inserted into the hook of the wiper arm and pull wiper blade out of hook. You may have to rotate and flex the blade to make enough clearance for the hook to pass through.

1990 Chevrolet Suburban Wiper Blade Installation Videos (hook-end arms)

1990 Chevrolet Suburban Wiper Blade Size Options w/Correct Lengths & Attachments

if your sure it is not a fuel problem,do you have spark, if not i would have the ign coil and ign module tested.if you have spark i would say it is in the timing.

When you replaced the fuel pump, did you notice if the pick-up line was in good condition or not? I have been told by a mechanic that has over 35 yearsof experience that this was a common problem, and especially now with Ethanol being mixed in with fuel.

I would make absolutely sure that I did not hook the battery up backwards, not uncommon.
And in addition to the high current thick cable from the positive terminal to the starter there
is the small connector to the relay on top. Easy to forget that also.

If you hooked the battery up backwards you now need another car as the wiring harness is cooked.

u most likely fried the fuel injection computer.

have you checked all ofyour fuses? usually when you hook up a battery backwads you end up blowing a fuse and or fry your alternator on older modeled vehicles as there is no protection for it.