My 2010 buick lucerne has a high pitched noise (sounds like a faint hair dryer) coming from the vented battery in the back seat. Just bought the car, didn't notice the noise until the next day. Easy to ignore when the car is driving and the sound is drowned out from road noise but you can definitely hear it when the car is at a stop in or in idle. I figured out the humming is connected to the battery when I rolled up my window I could hear a difference in the noise so I traced the noise back to the battery under the back seat. I am wondering if maybe the vent hose needs replacing. The battery was installed just two years ago so I'm not sure if it could be in bad shape already.
Hello, I would not think that a vent hose or a battery can generate a noise. I would think that the noise is likely related to a functional module or component in the same area. I would strongly encourage enlisting a local technician near you to hear the noise you are hearing and provide some good advice.
IF noise is not present while key is turned 'off' - suspect you're hearing the in-tank fuel pump operating .. That's pretty common on GM vehicles.
In a quiet environment - turn key on - do you hear this noise for 3 seconds - then it stops?
No, the car has this sound while running. Its a faint, high pitch sound that sounds like a tiny hair dryer in the back of the car. Its always making this sound when the car runs.
Edit: i believe youre right, sound comes from the fuel pump. Next question is, does that mean I have to replace it? Or, it just makes noise.
As DaveJM recommended - have an *experienced* mechanic listen to pump - they all make some noise while running - however ‘excessive’ noise ‘could’ be an indication of a problem.
Impossible to determine - here on the internet.
There will likely be *no charge* for the mechanic listening to pump - at any OR all repair facilities you choose - in other words get a couple of opinions if desired.
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Note : Try to maintain at minimum - 1/4 tank of fuel to help prolong fuel pump life - fuel in tank is what cools the pump while it’s operating.
Good luck with it!
No - that’s not necessary - however the more fuel that’s in tank - the less noise you’ll hear due to reduced ‘echo effect’ ....... (At minimum - 1/4 tank of fuel)
Good day.
Ahh, "maintain at minimum" thank you for clarifying. Yes, I've known to not let your car get to E to extend the life of the fuel pump. Thank you for the advice.
my mechanic heard the noise (indeed coming from the fuel pump) and said that the car is fine to drive with the noise. However I'm thinking about throwing the two or three hundred dollars at a new fuel pump assembly to get rid of the noise, and being proactive about the bulletin about the fuel pump relay burning out. I checked the relay, it looks fine to me, but I'll go ahead and replace that for $20 bucks and shave off the metal on the seat so to try to prevent a future burnout.
Highly recommend OEM fuel pump module for the replacement .. Fuel pump module is accessible from inside trunk - under access cover plate.
Good luck with it!
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No, the car has this sound while running. Its a faint, high pitch sound that sounds like a tiny hair dryer in the back of the car. Its always making this sound when the car runs. Edit: i believe youre right, sound comes from the fuel pump. Next question is, does that mean I have to replace it? Or, it just makes noise.
As DaveJM recommended - have an *experienced* mechanic listen to pump - they all make some noise while running - however ‘excessive’ noise ‘could’ be an indication of a problem. Impossible to determine - here on the internet. There will likely be *no charge* for the mechanic listening to pump - at any OR all repair facilities you choose - in other words get a couple of opinions if desired. â–ªï¸ https://repairpal.com/repair-shops â–ªï¸
Note : Try to maintain at minimum - 1/4 tank of fuel to help prolong fuel pump life - fuel in tank is what cools the pump while it’s operating. Good luck with it!
You ment to write "atleast" a 1/4 tank, not just a 1/4 tank. In other words, your advice is to keep the tank full, correct?
No - that’s not necessary - however the more fuel that’s in tank - the less noise you’ll hear due to reduced ‘echo effect’ ....... (At minimum - 1/4 tank of fuel) Good day.
Ahh, "maintain at minimum" thank you for clarifying. Yes, I've known to not let your car get to E to extend the life of the fuel pump. Thank you for the advice.
my mechanic heard the noise (indeed coming from the fuel pump) and said that the car is fine to drive with the noise. However I'm thinking about throwing the two or three hundred dollars at a new fuel pump assembly to get rid of the noise, and being proactive about the bulletin about the fuel pump relay burning out. I checked the relay, it looks fine to me, but I'll go ahead and replace that for $20 bucks and shave off the metal on the seat so to try to prevent a future burnout.
Highly recommend OEM fuel pump module for the replacement .. Fuel pump module is accessible from inside trunk - under access cover plate. Good luck with it!