How to change back spark plug on 3.1

Question edited for clarity and 'spake' to 'spark'.
Question moved to model category.

Likely to be no fuel at the injectors or a sensor. If that is the case, you need an auto electrician.

https://www.google.com/search?q=auto+electrician+near+me

https://www.google.com/search?q=Pontiac+Grand+Prix.+Crank%2C+no+start


No crank and no start

easy job replace one spark plug at a time.you need buy new set of spark plug wires and spark plugs.reason need new wires possible old ones will break from inside plug boot when you remove plug wires.you need basic 3/8 ratchet wrench.you need long short extensions.need spark plug socket.need spark plug gap gauge.need a universal joint connect to the extensions to reach sharp angles.make sure engine cold when replacing spark plugs could damage heads.use a 12 inch piece vacuum hose to help aid in installing sparks in hard reach spaces with out damaging crosss threading plugs threads and cylinder head threads to plug.

Just a tight situation. Small arms help. Best access is from drivers side reaching down between firewall and engine. You will have to find and follow a plug wire one at a time, twist and pull off. ( careful wires if old will break off and a new set will be needed). Using same technique install the spark plug socket on the plug and appropriate extensions to get a good working clearance to loosen plug. Reinstall new plug in reverse order after checking gap. Plugs are in at an angles. You can see them if you really lean in and look down behind engine. It will just be a trial and error on gaining access and changing the plugs one at a time. A plug socket, a 2 inch extension and a 3/8 drive ratchet should do. Don't scrimp on cheap plugs. Good luck

My sincere apologies for the delayed response.
I am personally going back to answer your unanswered question.

For the 2.8L
Firing Order:
1-2-3-4-5-6

Cylinders:
......(back)
1.......3.......5
2.......4.......6
......(front)

Ignition Connections (Spark Coils):
........(back)
.|.1..4.|.|.6..3.|.|.2..5.|
........(front)

Again my apologies....
Let me know if this helped...

this engine is turned sideways in the engine compartment. looking at the front of the engine, where belts and pulleys are mounted, the odd number cylinders are on the left, the even to the right. starting from the front of the engine, counting towards the rear, the cylinders are numbered 1, 3, 5 on the left and 2,4,6 on the right. remove the spark plug in the number one cylinder and place a peice of tissue in the hole. now crank the engine in very short bursts. as soon as you hear the engine crank, let off the key. check for the tissue to fly out of the spark plug hole. once the tissue flies out, the number one piston is up. now you need to take the cap off the coil, and see where the rotor is pointed. hold the cap over the rotor to see which terminal lines up with the rotor contactor. connect one end of the plug wire to the corresponding terminal, and the other end to the number one cylinder spark plug after it is reinstalled. from here the coil terminals are numbered in a clockwise direction. the firing order for your engine is 1-2-3-4-5-6, so you just connect one end of a plug wire to the number two terminal, and the other end to the spark plug in the number two cylinder. repeat this procedure for the remaining wires,

If it is a v-6 the front ones will be easy but the back ones will require some arm streching

I own a 2004 jeep Grand Cherokee 4.7 V-8 It took me 3 1/2 hours to complete changing the spark plugs. First one must remove the cover from the air filter and to the carbuetor there are two bolts on each side of the cover over the engine then the driver side is easy to remove the boots on each plug the passenger side is pretty easy except for the last plug all the way on the back this one took me 1/2 to remove because there is lots of obstructions like the power steering line and the oil line and electrical cables.

They are on the heads, follow the plug wires.

Your problem may be a faulty (shorted) ignition coil housing assembly (the white plastic cover housing the coils its bolted to the aluminum cover) change that along with the spark plug boots ( the boots are optional but I recommend it) that should get your Grand Prix running smooth. Good luck and keep me posted, be glad to help

ok you should remove the doge mounts in the front and tilt the motor forwers

Sounds like a large vacuum leak. Possible hose off, intake gasket blown, etc. Listen for any vacuum hissing sounds from a leak somewhere.