Question about 2004 Chevrolet TrailBlazer
On the very top of your engine there 6 coil pack's going from front to back of engine with a harness going to each one, remove one at a time disconnect harness remove 10mm bolt pull up on coil pack and spark plug will be in there, install back and do the rest the same way,good luck, hope this was very helpful.
Posted on May 13, 2010
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Posted on Jan 02, 2017
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