How to Replace Ignition Coil/Spark Plugs on Chevy Trailblazer!

Here's how to replace ignition coil on Chevy Trailblazer, should be similar also on other Chevy/GM vehicles.

Replacing spark plugs is same as this except you pull the spark plugs out after taking the ignition coil out.

Get Ignition Coil for your Chevy Trailblazer here:
http://www.amazon.com/gp/product/B000...

And get OBD II Scanner here:
http://www.amazon.com/Autel-MaxiScan-...
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