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BeckyD @ James Martin Chevy


View Poll Results: Do you have the NPP rattle/buzz
Yes 137 43.77%
No 176 56.23%
Voters: 313. You may not vote on this poll

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Old 06-29-2016, 03:20 PM   #113
meb91
 
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Just wanted to come back to this thread and update you guys, ever since they replaced my exhaust the rattle is gone. So looks like it's been resolved in the newer systems - definitely have the dealer order you a new one if you have this issue.
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Old 06-29-2016, 03:29 PM   #114
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Quote:
Originally Posted by meb91 View Post
Just wanted to come back to this thread and update you guys, ever since they replaced my exhaust the rattle is gone. So looks like it's been resolved in the newer systems - definitely have the dealer order you a new one if you have this issue.
That sounds very promising!

Please let us know if it comes back. My brand new exhaust sounded perfect and rattle-free until it had about 1,000 miles on it...
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Old 06-29-2016, 03:49 PM   #115
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Quote:
Originally Posted by Vyncynt View Post
That sounds very promising!

Please let us know if it comes back. My brand new exhaust sounded perfect and rattle-free until it had about 1,000 miles on it...
It was between 1000-1100 when mine started as well. I would be interested in knowing this as well. Mine was dropped of at the dealer for the rattle, paint and a couple other issues on 5-31, and I still don't have it back.
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Old 07-01-2016, 06:31 PM   #116
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Hmm, I noticed the rattle almost immediately on my first exhaust - probably within the first 100 miles. I've driven about 800 miles on the new exhaust and still no rattle, but I'll let you guys know if it comes back.
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Old 07-01-2016, 06:46 PM   #117
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My exhaust has been replaced for two weeks now and I'm happy to report both the squeak of the valves opening and closing as well as the rattle are both in fact gone. I'm happy the dealer decided to replace the exhaust rather than apply the fix.
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Old 07-01-2016, 07:10 PM   #118
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Really just started to notice mine at 2200 miles.
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Old 07-07-2016, 06:03 AM   #119
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Anyone have an idea why npp can stay stuck in open valve mode...and with fuse 51 in and fine!!
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Old 07-07-2016, 07:04 AM   #120
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Talking 2016 2SS NPP A8 NAV Yellow

No issue yet 2500 miles
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Old 07-07-2016, 07:12 AM   #121
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Originally Posted by camaro99 View Post
Anyone have an idea why npp can stay stuck in open valve mode...and with fuse 51 in and fine!!
Stuck open? How are you verifying the valve is open. Are you setting it to Stealth mode and then back there to look? In the other modes the valves only really close at low rpm/cruising speeds. They are always at idle except for stealth mode.
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Old 07-07-2016, 07:22 AM   #122
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not really getting a rattle more of a squeak from the valves, playing with it at the drive thru and everytime I would switch it would squeak pretty loud.
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Old 07-07-2016, 08:07 AM   #123
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No issues at 2100 miles.
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Old 07-07-2016, 09:10 AM   #124
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First car I had for 2200 miles, never had the problem. Second car is at 1700 miles, no problem yet.
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Old 07-07-2016, 09:17 AM   #125
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I've got it. Had it since about 2k. Sitting at 9500 miles now.
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Old 07-07-2016, 10:18 AM   #126
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What does it sound like? In 2nd gear at like 2k rmp if I'm only giving it light gas it sounds like it rattles
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