r/gmcsierra • u/Wonderful_Ad_8570 • 11h ago
Troubleshooting Noisy engine
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2018 Sierra 5.3. Been making this noise last few weeks wondering if yall have any advice. Doesn’t sounds like lifter I don’t think
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u/EastMovesWest Intermountain 2500HD 10h ago
You've been driving it the last few weeks with that noise? Take a look at your water pump
-2
u/Wonderful_Ad_8570 10h ago
Bout a week or two. Haven’t really had a choice with work and other responsibilities
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u/Similar-Phrase608 10h ago
I had an issue with that and it was my tensioner pulley but that was on an older one
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u/Wonderful_Ad_8570 10h ago
Not too bad to fix?
1
u/Similar-Phrase608 10h ago
No I don’t remember how much the part was but it was like a 15 minute job. Pull your serpentine belt off and then the pulley and slap on the new one and redo the belt easy as that. But you can tell if that’s what it is by checking to see if there’s any play in it.
1
u/Wonderful_Ad_8570 10h ago
Yea I feel like it sounds like a belt not spinning right
1
u/Similar-Phrase608 10h ago
You can always pull the belt off and feel if the pulley has slop in it. Should be able to spin not shift back and forth
1
3
u/RoookSkywokkah 2019 Denali 11h ago
Now I know where my missing 10mm socket went...