DRIVESTAR Ignition Coil Pack for Chevrolet Trailblazer Colorado Envoy, for GMC Canyon, for Hummer Saab, for Buick Rainer Ascender Isuzu i-280 i-290 i-350 9-7x 2.8L 2.9L 3.5L 4.2L UF303 C1395

So far so good on my 03 GMC Envoy SLT 4.2

These are cheap and I needed one as my GMC has been getting them as needed one by one by the prior owner. So I can see that 5 have been changed and tonight cyl #1 finally died it was the last of the original Delphi coils that the vehicle came with. So now I'll have all aftermarket El Cheapo mix and match coils. But guess what? They work. Im gonna buy a spare and keep it in the back with the spare tire so when the next one goes I can slap one in road side since I keep an OBD scanner in my glove box to read codes when needed. My 04 GMC Envoy mostly sits and gets used only for hardware store runs and big grocery shopping. I recently did plugs and coils on my Benz and that was a sweet deal too here on Amazon. I like that it all gets delivered right to your front door. Yeah Autozone wanted $75 for just one coil for the GMC. Here you can buy a whole set for that. Gotta love Amazon!

Fixed misfire code. Looks good. I guess we'll see how long it works.

Cannot beat this price. I installed 5 of these coils as soon as they arrived. Had just replaced one coil for almost the cost of all 6 of these. Now I have one spare. Also installed 6 new ACDELCO plugs. Envoy runs better. WIll report back if there is a failure. Excellent value if reliable.

good product and fast shipping

I distrusted the quality of a critical part priced so low. Same part was about $75 at the local O'Reilley's. I needed one, ordered two, thinking that at this price if one was bad I'd use the second one and still come out ahead. They both worked perfectly, so I used them both. Easy peasy and the 2003 Chevy Trailblazer is running nice and smooth now with no more engine codes. Installation was easy with a only a 10mm socket needed for the whole job.

I bought these as preventative maintenance knowing the early Atlas coils tend to fail. My truck had what looked like factory coils that were working just fine, but the truck had 281,000mi. It seemed like smart preventative maintenance while replacing the spark plugs. Well two months and 1200 miles later, while driving down a 55mph road it started misfiring. I grabbed the scanner and read a misfire on cylinder 2. I limped it about 5 miles to the closest parts store and was stuck paying $60 for a single coil. Knowing what I know now, I should have kept the factory coils on the engine and kept these cheap junk ones in the glovebox just as backups. Hopefully if you ignore this review you have better luck with them and get at least a full season or at least an oil change worth of miles out of them.

First of all, the electrical connectors on the vehicle are difficult to get disconnected. You have to have patience and, watch videos so that you know how they come apart. It isn't impossible but, you can't get frustrated or in a hurry.The new coil is a direct replacement for my 2004 Trailblazer. Took me about an hour but, the shop was going to charge me $180 to replace one....$900 for all 6 plus new plugs.....I am very happy that I decided to go ahead and replace it myself. Vehicle is running fine and with my OBD II reader, I was able to reset the codes....Happy Camper