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Showing results for tags 'coil pack'.
Hey! So, I'll give you the quick history... Over the last year we've replaced 3 coil packs. It started with a miss and the dealership recommended a top engine clean and repair of an engine mount. We did that and it didn’t fix it. So they changed one of the coil packs and that did fix it. Then a few months later the miss appeared again and a different dealership replaced another coil pack, at that time at the different dealer they also changed the spark plugs for the other cylinders on that bank (1,3,5 ), the coil pack they changed was #3. Then right before Christmas another coil pack. And now it started missing again and this time I took it to dealer and they said it was the #3 and #4 coil packs. Which the #3 was just changed in July. That one is covered under the GM 2 year parts and labor warranty and at the local dealer we go to they said they didn't record which coil packs they changed before ??. But I had record from the other dealership that it was #3 for the one in July. My question is, what is causing these failures? To have the dealer fix them is like 400 each time! I'm probably going to do the fixing myself from here on if this keeps happening. I just want to understand why it's failing? Are they not gapping the plugs right? I would imagine they are checking for leaks and moisture once they are in there? I’m starting to not have any faith in them and want to understand everything better so I can be more knowledgeable and prepared for our next conversation at least.
I just installed a different engine in my 01 2500HD 6.0L the replacement engine was also supposed to be a 2001 engine, one of the coils packs was bad and I went to swap one off my old engine but they mounted different. Did GM use 2 different coils packs on the 2001 or is this a newer engine?