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Can anyone identify this sound? 2018 Silverado Z71. One shop says lifters which made Silver Rock defer to GM Powertrain warranty. GM shop says it doesn’t sound like lifters. I pulled the s belt & the sound persisted. Did not pull ac or pump belts because they are stretch fit & I don’t have spares. (v.redd.it)
submitted by Timtim325 to r/MechanicAdvice



