What is the wiring sequence for spark plugs in a 05 Chevy Impala 3800 series 2 ?

https://www.modifiedlife.com/2004-chevrolet-impala-car-radio-wire-guide/

You can try unplugging one of the spark plug wires from the coil pack and then touching it to a metal surface, you should see a spark. If you do then that wire and plug are good. Do this to each wire to check for spark. If they all have spark, ensure that they are plugged in the correct order. If they are you may have a faulty coil pack. You can pick one up on ebay super cheap.

2002 CHEVROLET IMPALA REPAIR MANUAL

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Maybe you interchanged a couple plug wires >

It can be faulty or dirty spark plug itselfd.Also for reference get the fuel level checked.Is the fuel tank is empty or near to empty.
Try cleaning the spark plugs and then see if that is helpin.On some cases the black carbon layer gets collected on the spark plugs and that causes the problem,so cleaning the plugs help.But if its not helping,then spark plug has to be replaced.Spark plugs get power from ignition coil to ignite sparks.If ignitioncoils are faulty then also there will no spark.--------------

To troubleshot and confirm the issue,i suggest you to go through the help links provided below,check the procedure and it will help you to confirm the issue in your case.
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Click the link below:------

Car cranks, has spark but will not ?

http://howtobyme.blogspot.com/2011/12/car-crankshas-spark-but-will-not-start.html

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The spark plug firing order for car?

http://schematicsdiagram.blogspot.com/2011/06/spark-plug-firing-order-for-car.html

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How to Replace Spark Plugs?

http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-spark-plugs.html

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How to Perform a Basic Engine Tune Up-Spark Plug and Wire Change

http://schematicsdiagram.blogspot.com/2011/08/how-to-perform-basic-engine-tune-up_01.html

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Car has no spark?

http://schematicsdiagram.blogspot.com/2011/06/car-has-no-spark.html

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How does the spark plug wire go on the distributor cap in 1991 Mitsubishi Mighty?

http://schematicsdiagram.blogspot.com/2011/12/how-does-spark-plug-wires-go-on.html

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No spark on 2008 Chevy Avalanche?

http://schematicsdiagram.blogspot.in/2012/04/no-spark-on-2008-chevy-avalanche.html

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How does the spark plug wire go on the distributor cap in 1985 Pontiac sunbird?

http://schematicsdiagram.blogspot.com/2011/12/how-does-spark-plug-wire-go-on.html

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Ford Plug Wires Not Coming out?

http://whoisbyme.blogspot.in/2012/06/ford-plug-wires-not-coming-out.html

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Ford explorer has no spark?

http://schematicsdiagram.blogspot.com/2011/12/ford-explorer-has-no-spark.html

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Chevy impala spark plug firing order diagrams?

http://technoanswers.blogspot.in/2012/02/chevy-impala-spark-plug-firing-order.html

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How to gap spark plug on Chevy Impala?

http://technoanswers.blogspot.in/2012/02/how-to-gap-spark-plug-on-chevy-impala.html

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Spark plug Replacing for chevy impala?

http://technoanswers.blogspot.in/2012/02/spark-plug-replacing-for-chevy-impala.html

Chevy s-10 blazer 4.3l Spark Plug Firing Order?

http://howtobyme.blogspot.com/2011/12/chevy-s-10-blazer-43l-spark-plug-firing.html

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1982 dodge rampage Spark plugs Firing Order Diagram?

http://schematicsdiagram.blogspot.com/2011/12/1982-dodge-rampage-spark-plug-firing.html

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2006 Suzuki Forenza Spark plug Firing Order Diagram?

http://schematicsdiagram.blogspot.com/2011/12/2006-suzuki-forenza-spark-plug-firing.html

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1983 Ford Ranger Spark plug firing order?

http://schematicsdiagram.blogspot.com/2011/12/1983-ford-ranger-spark-plug-firing.html

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Firing Order for 1991 Lexus ES 250?

http://schematicsdiagram.blogspot.com/2011/12/firing-order-for-1991-lexus-es-250.html

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Firing order for 1992 Chevrolet 5.0 engine?

http://schematicsdiagram.blogspot.com/2011/12/firing-order-for-1992-chevrolet-50.html

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How to identify number one spark plug on the distributor cap?

http://schematicsdiagram.blogspot.com/2011/12/how-to-identify-number-one-spark-plug.html

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How to remove rear spark plugs on 1991 Buick Regal?

http://howtobyme.blogspot.in/2012/02/how-to-remove-rear-spark-plugs-on-1991.html

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These details will help.

Thanks.

For spark plug problem,click the help links provided below :---Car has no spark?http://schematicsdiagram.blogspot.com/2011/06/car-has-no-spark.html
------------How to Replace Spark Plugs?http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-spark-plugs.html
-------------Car cranks, has spark but will not start?

http://howtobyme.blogspot.com/2011/12/car-crankshas-spark-but-will-not-start.html

------------------------
The spark plug firing order for car?http://schematicsdiagram.blogspot.com/2011/06/spark-plug-firing-order-for-car.html
----------How to gap spark plug ?http://technoanswers.blogspot.in/2012/02/how-to-gap-spark-plug-on-chevy-impala.html-----------Spark plug Replacing for?http://technoanswers.blogspot.in/2012/02/spark-plug-replacing-for-chevy-impala.html
-----------How to identify number one spark plug on the distributor cap?http://schematicsdiagram.blogspot.com/2011/12/how-to-identify-number-one-spark-plug.html
---------How does the spark plug wire go on the distributor cap?http://schematicsdiagram.blogspot.com/2011/12/how-does-spark-plug-wires-go-on.html
---------Spark plug Firing Order Diagram?http://schematicsdiagram.blogspot.com/2011/12/2006-suzuki-forenza-spark-plug-firing.html
-----------This will help.Thanks.

For complete spark plug detail for chevy impala car model.Click the link below :-------http://technoanswers.blogspot.in/2012/02/spark-plug-replacing-for-chevy-impala.html
-------Thanks.

For 1997 Chevrolet Camaro 3.8 liter V-6 VIN "K" check this diagram...




Hope helps (remember rated an dcomment this).

For the 2000 Chevrolet Impala 3.8L V6:

Firing Order:
1-6-5-4-3-2

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

Ignition Coil Connections:
(back)
o <---6
___
o <---3
o <---2
___
o <---5
o <---4
___
o <---1
(front)

Let me know if this helped, or if you have additional information or questions. Feel free to contact me at FixYa.com!

Hi,
I don't know your engine size, but the link below is a picture of the GM small block firing order with distributor.
The firing order, which should be cast into the intake manifold, for the chevy small block V8 is 1-8-4-3-6-5-7-2. The firing order is the numerical sequence in which the spark plugs are fired. The insertion position of each spark plug wire around the circumference of the distributor cap can be found according to a clock face. The insertion sequence determines the firing order. The firing order is followed clockwise around the distributor cap starting from the 6:30 position with the 6:30 position being the number one cylinder spark plug wire.

http://www.classiccarauto.com/impala/how_to/images/distributor.png

Hope this helps...