▲ 1 r/gmcsierra
Anyone know if this is a bad noise to hear or normal? 2021 GMC Sierra 1500
2021 GMC Sierra 1500 6.2L with 35k miles, I hear this noise and thought it was normal with like a small leak due to AC running. Wife thinks it’s concerning, I didn’t think it was.
Anyone know what noise this is? Never heard before, used to have a 2015 GMC Sierra 1500 and never heard in 160k miles. Any info is appreciated !
u/2svgeszn — 3 days ago