DWVO Ignition Coil Pack of 6 for Buick Rainier, Chevy Trailblazer Colorado, GMC Canyon Envoy, Isuzu, H3, Saab 2.8L 3.5L 4.2L Review

Missing parts found due to 3 missing internal springs only one of six worked Car keeps shaking Replaced by OEM Problem solved Don't waste your time and money

coils seem to really solve the problem. Drives like a new car. Only 4 stars because a pin on a connector was bent and boots had to be removed to tighten the springs on the stud, some were removed. Simple solution, just check before use.

Everything worked as advertised, we had a small problem with the number one cylinder which was a bit difficult to align with the wiring harness getting in the way, other than it seemed fine functions. E3 spark plugs were also used instead of AC Delco.

My Trailblazer 4.2 misfired and I assumed it was a bad coil as that's common with them and of course these coils forced my Trailblazer work again like new. Got full power back and no stuttering at idle. Good product! I recommend for such a price!

I replaced the coil pack earlier. I was going to order 5 packs for the Chevy Colorado as they fit in the Trailblazer to replace them all. I saw and bought this listing for less than 5 packs. Planned to have a replacement. One of the cylinders was still firing. I replaced it with my extra spool and the boom was fixed. I have now lost an extra coil pack as one was defective.

Over the years I have replaced the spool from time to time. Is it expensive. I was a little hesitant because of the price for a six pack. You know you get what you pay for. First, they were easy to replace. Second, why did I wait so long to do this? It's great to have all new coils. This car has almost 230,000 miles and drives like a top. I'm amazed at the difference, the increased power and fuel economy. Thank you for providing.