Replace spark plugs and wires - 2000 GMC Yukon XL

remove 1 spark plug wire from the plug. Find a socket that fits the spark plug and connect it to the socket wrench. Put the socket on the spark plug and turn counter clock wise until the old spark plug is removed. Check the gap on the new replacement plug ( make sure you have the correct plug first). Put the new spark plug into the hole that the old 1 came out of and turn clockwise by hand making sure it is in straight, then tighten it clockwise until tight.( WARNING: DO NOT OVER TIGHTEN THE PLUG OR YOU WILL BREAK IT). replace the spark plug wire. repeat the process with the other 3 spark plugs. Start the vehicle. If you are replacing the wires, take off 1 wire at a time, match up the size and replace the old with the new.

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 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.

Do a complete tune up.. Spark plugs, wires, distributor cap, and rotor button... If it has coil packs that sit on top of the spark plugs.. Replace the spark plugs and cylinder number one coil

Inspection

Inspect for the correct routing of the spark plug wires. Improper routing may cause cross-firing. Inspect each wire for any signs of cranks or splits in the wire. Inspect each plug wire boot for tearing, piercing, arcing, carbon tracking or a corroded terminal.
If there is any corrosion, carbon tracking or arcing indicated on a plug wire boot or terminal, both the plug wire and component it was connected to should be replaced.

Removal & Installation

3.5L Engine

1. Before servicing the vehicle, refer to the Precautions Section.
2. Remove the left side spark plug wires from the spark plugs.
3. Remove the left side plug wires from the retaining clips.
4. Rotate the engine for access as follows:
   1. Set the parking brake.
   2. Shift the transaxle into neutral.
   3. Remove the engine mount strut bolts. Swing the engine mount struts aside.
   4. Install the Engine Tilt Strap J-41131.
   5. Pull on the engine in order to rotate the engine forward.
   6. Tighten the strap.
   
   
5. Remove the right side spark plug wires from the spark plugs.
6. Remove the plug wires from the retaining clip.
7. Remove the spark wires from the ignition coils.
8. Remove the plug wire assembly from the engine.
   NOTE If you are replacing the spark plug wires, the spark plug wire conduit and retaining clips should be transferred to the replacement wires.
   

To install:

1. Install the right side plug wires to the ignition coils and then the spark plugs.
2. Install the spark plug wires to the retaining clip.
3. Rotate the engine back to the original position.
4. Install the left side spark plug wires to the ignition coils and then to the spark plugs.
5. Install the spark plug wires to the retaining clips.

3.9L Engine

1. Before servicing the vehicle, refer to the Precautions Section.
2. Remove the intake manifold cover.
3. Remove the left side spark plug wires as follows:
   1. Disconnect the left side spark plug wires from the spark plugs.
   2. Disconnect the left side spark plug wires from the ignition coil.
   3. Remove the left side spark plug wire clips from the intake manifold and heater inlet and outlet pipe.
   4. Remove the left side spark plug wire assembly.
   
   
4. If removing the right side spark plug wires, the engine must be rotated for access as follows:
   1. Set the parking brake.
   2. Shift the transaxle into neutral.
   3. Remove the engine mount strut bolts. Swing the engine mount struts aside.
   4. Install the Engine Tilt Strap J-41131.
   5. Pull on the engine in order to rotate the engine forward.
   6. Tighten the strap.
   
   
5. After rotating the engine, remove the right side spark plug wires as follows:
   1. Disconnect the right side spark plug wires from the spark plugs and ignition coil.
   
   
6. Remove the right side spark plug wire clip from the ignition coil bracket.
7. Remove the right side spark plug wire assembly.

To install:

1. Install the spark plug wire assembly.
2. Install the right side spark plug wire clip at the ignition coil bracket.
3. Connect the plug wires to the ignition coil and spark plugs.
4. If the engine was rotated for access, return the engine to the original position.
5. The remainder of the installation is the reverse order of removal.

The correct arrangement?

I always remove one plug wire, replace that spark plug, and then replace that one spark plug wire. This way I never cross which plug wire to which position.

2003 Chevrolet Malibu 3.1L SFI OHV 6cyl
Spark Plug Wires - Removal & Installation

3.5L Engine

1. Before servicing the vehicle, refer to the Precautions Section.
   NOTE Twist the spark plug boot one-half turn in order to release the boot. Pull on the spark plug boot only. Do not pull on the spark plug wire or the wire could be damaged.
2. Remove the intake manifold cover, if required.
3. Disconnect the left side spark plug wires from the spark plugs.
4. Disconnect the left side spark plug wires from the ignition coil.
5. Remove the spark plug wire clips from the Manifold Absolute Pressure (MAP) sensor bracket and the heater inlet and outlet pipe tab.
6. Remove the spark plug wire assembly.
7. If replacing only one plug wire, open the retaining clips and remove the appropriate spark plug wire.
8. Disconnect the right side spark plug wires from the spark plugs.
9. Disconnect the right side spark plugs from the ignition coils.
10. Remove the spark plug wire assembly.
11. If replacing only one plug wire, open the retaining clip and remove the appropriate spark plug wire.

To install:

1. Install the spark plug wire assembly.
2. Connect the right side spark plugs to the ignition coils.
3. Connect the right side spark plug wires to the spark plugs.
4. If replacing only one plug wire, open the retaining clip and install the appropriate spark plug wire.
5. Install the spark plug wire assembly.
6. Connect the left side spark plug wires to the spark plugs.
7. Connect the left side spark plug wires to the ignition coil.
8. Install the spark plug wire clips to the MAP sensor bracket and the heater inlet and outlet pipe tab.
9. If replacing only one plug wire, open the retaining clips and install the appropriate spark plug wire.
10. Install the intake manifold cover, if required.

Fig. 2.2L Engine Firing Order: 1-3-4-2 Distributorless ignition system



Fig. 3.1L Engine Firing order: 1-2-3-4-5-6 Distributorless ignition system



Fig. 3.5L Engine Firing order: 1-2-3-4-5-6 Distributorless ignition system



Fig. 2.4L Engine Firing order: 1-3-4-2 Distributorless ignition system



Fig. 3.1L Engine Firing order: 1-2-3-4-5-6 Distributorless ignition system



Fig. 2.2L Engine Firing Order: 1-3-4-2 Distributorless ignition system


Fig. 3.5L & 3.9L Engines Firing order: 1-2-3-4-5-6 Distributorless ignition system


I really hope help you with this (remember rated this help) Good luck.