The 2004 Trailblazer does not have plug wires. It has a coil pack per cylinder that connects direct to the spark plugs.
Very carefully
how to put plug wires on a 1996 Saturn sl
No.
Remove the spark plug wires from the spark plugs, use an extension for your Allen wrench, and use a spark plug socket to remove the spark plug.
mike
timing for spark plug wires for saturn sl1 1996
Spark Plugs, Spark Plug wires, PCV Valve
possible misfires caused by spark plug/coil wires
Disconnect the battery, remove the spark plug wires and boots, and remove the old spark plugs. Toss out the old spark plugs, put in the new spark plugs, replace the spark plug wires and boots, and connect the battery.
A 2004 Hyundai Santa Fe 2.4 has two spark plug wires, for cylinders #1 and #3. Cylinders #2 and #4 use what's known as "spark plug connectors" or "coil to plug boots".
Remove the spark plug wires from each spark plug. Turn the spark plug out with a 5/8 deep well socket. Reverse the process to install the new spark plugs.