JIMMY034
Springville, NY (S. of Buffalo)
Senior Member
Joined: 04/30/2001
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There may be 'fixes' but it's normal. My '18 had a recall for injector timing, made zero noise before, now in a drive-thru or tunnel etc it has a quite noticeable click or 'pop'. And this is on a new '18 L5P, so I wouldn't sweat it.
2018 GMC Sierra Denali 2500 HD 4X4, 6.6L Duramax/Allison, Amsoil dual oil bypass filter system, Demco Recon 21K hitch. 2004 Puma 28' 5th wheel. USAF/Desert Storm Vet. CDL-A driver for Walmart.
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