1992 GMC K1500, 5.7L has no spark. New battery and ignition coil. Is parked on a slope headed downhill towards the driver side.

Did you change the Spark Plugs too? The coil is new you said. Might want to thing about replacing all the Spark Leads to new ones, they may be dead, just replace them all, even the main one.

Here ya go
Each individual spark plug is located under each ignition coil. Each individual ignition coil must be removed to gain access to each spark plug See: Ignition Coil\Service and Repair\Ignition Coil - Removal

1. Remove necessary air filter tubing at throttle body.
2. Prior to removing ignition coil, spray compressed air around coil base at cylinder head.
3. Prior to removing spark plug, spray compressed air into cylinder head opening. This will help prevent foreign material from entering combustion chamber.
4. Remove spark plug from cylinder head using a quality socket with a rubber or foam insert. Also check condition of ignition coil O-ring and replace as necessary.
5. Inspect spark plug condition

Could be ignition control module. It is probably located on distributor. It is a black odd shaped object with like 2 or 3 plugs on it. Take it to an autozone and have it checked

check ignition fuse, if ignition coil is okay.replace the distributor cap and rotor, replace spark plugs and wires,could have bad ignition module, distributor ignition timing off,could have faulty pcm. have vechicle code scan before spending lot of money guessing.

Fuel pump issue.--

Car not starting or turning over indicates towards multiple possibilities. It can be issue with battery or weak battery. But if battery checks out ok, then it can be starter issue or faulty alternator or problem with low fuel pressure or no spark at spark plugs due to dirty spark plugs or faulty ignition coil or injectors getting cracked or dirty and needs to be cleaned.

To confirm the problem, the basic troubleshooting is required.

Click this link below and follow the troubleshooting:------

http://technoanswers.blogspot.in/2012/02/car-starting-issues.html

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This will help.
Thanks.

Either the spark plug is faulty or the coil pack is faulty.The spark plugs get power to spark from coil packs.

If the engine has no spark, check for voltage at the coil positive terminal when the ignition key is on. If NO voltage, then problem is on the trigger side of the coil (pickup, crank sensor, ignition module or primary wiring circuit).

But If there is NO voltage at the coil itself, then in that case the problem is on the supply side (the ignition switch or ignition wiring circuit).

But if the coil has voltage, then problem may be a bad high voltage output wire from the coil to spark plugs or hairline cracks in the coil output tower.------Getting this all possibilities checked will point towards the exact faulty part which is to be replaced.----------This should help.Thanks.Helpmech.

HI. it sounds as if you have no fuel pressure have you checked? Most likely what happen when you parked the car on the slope there was not enough fuel in the tank to keep the fuel pump cavity filled with enough fuel. Then when you tried to start the car the fuel pumps vanes broke away.

Replace the ignition module

I assume you have already tested the (secondary ignition circuit) Locate your coil. Using a test light check for power at the small wires going to the coil, (primary circuit) Key on you should have a bright light, (battery power) I use a needle to insert into the back of the plug for this. Then check for power on the negative side of the primary coil wiring. (same plug) you should also have a bright light. Have someone crank the engine over and the light should flicker. If it doesn't flicker then you either have a broken timing chain so the distributer isn't spinning (Lift the cap and make sure the distributer is spinning.) or control problems. A spark igniter or wiring, or as a last resort ecm. If it does flicker then your coil is dead or coil wire is no good.