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gsfrobert
New User
Apr 17, 2022, 8:28 AM
Post #1 of 4
(2188 views)
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My 2019 GMC Acadia 57k miles, has a noise that only happens when the accelerator is pushed down; the noise does not happen breaking or coasting. It sounds like a grinding sound. I have new tires, new breaks, alignment is good and of course fluids are good.
I've taken it to three different shops and all three say they can't see anything wrong underneath the vehicle.
I'm thinking its the ball-joints or suspension but I'm not a mechanic.
Any feed back would be great.
I have videos of the sound but idk how to post it here.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Apr 17, 2022, 8:46 AM
Post #2 of 4
(2183 views)
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Re: 2019 GMC Acadia
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? Noises always a challenge. "Grinding" upon acceleration is the clue for now. 57K so what items are likely?
Brakes (just done but how well?) odd tire wear, bearings high on the long list. Can be belt(s) that are working harder or the items belt runs. Check tension of the thing if old most have a self tensioned pulley with marks that it's within range to work.
Alternators work harder upon raising engine speed if a while at very low/idle speeds prior to this just FYI on the list or back to belt tension.
Stranger things are some new belts or types are just really lousy and noisy drive you nuts thinking it's failing it's just lousy a few do that after just a few miles on them.
Those are some things to check for now report what you see or find on from that.
> Small note "breaks" are like a coffee break > the ones that stop a vehicle are spelled "BRAKES" spell check wouldn't catch that,
T
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 17, 2022, 11:31 AM
Post #3 of 4
(2168 views)
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Re: 2019 GMC Acadia
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You say fluids were checked. Does that include power steering?
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Apr 17, 2022, 11:42 AM
Post #4 of 4
(2164 views)
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Re: 2019 GMC Acadia
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Lots of checks - that too. If you can, take the belt off if this will duplicate the noise sitting still with it on.
Turn each item that will turn PS is one that doesn't coast when turned/belt off. Others do should be just about silent with zero play in anything with a bearing. Water pump really won't the unseen impeller should be in coolant but be free all other ways.
Noises stink to find some when in front of them just have to check everything and what makes it happen if also without moving along. IF not it's more load dependent to cause it. It's some warning you need to find it or get help,
T
(This post was edited by Tom Greenleaf on Apr 17, 2022, 11:43 AM)
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