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under the passenger side rear hub cap ...... huh?

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Q: Where is spark plugs located on 2003 trail blazer?
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Where are the spark plugs on a 2002 Trail Blazer LT and how can you change them on your own?

The plugs run down the center of the engine under the coils. You can see the coils after you remove the resonator (Thing that says Vortec 4200)


Does a 2004 trail blazer have spark plugs?

Yes all cars have spark plugs if they use unleaded fuel your sparks plus are usually close to the exhaust manifold and have wires running to them. the only way you won't have spark plugs is if your car is a diesel since diesel ingites under the high pressure of heat in the compression stroke


Where are the plugs located on 2003 trail blazer?

The plugs are located along the top of the motor under the coil packs. You must first remove the resonator box from the top of the motor to see the coil pack covers along the top of the motor. www.trailvoy.com Trailblazer enthusiasts forum


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Where are 2004 Chevy Trail Blazer spark plugs located?

They are along the top of the engine. You must remove the vortec 4200 resonator box from the top of the motor then you will see six electrical connections. These are the coil packs and are held in place by long skinny bolts bolts so do not apply too much stress. If they are very tight then tap them with a small hammer to break any corrosion. Remove them one at a time and pull it up and out of the way. The spark plugs are in the well. Replace with AC Delco Iridium. Do not adjust the gap on these plugs as the protective finish on the electrode is important for the plug life. www.trailvoy.com - All the answers for you truck from enthusiasts!


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