AskPatty Certified Female Friendly Logo
I Have a Sierra 1500 crew cab with 152,900 miles . I change the oil every 3000 miles and maintain the truck-- new struts and bridgestones evos last year. In the past month I hear a short humming sound ( Like a cell phone vibrating) behind the rear seat,periodically while driving. I am wondering if this could be the fuel pump in the gas tank and it may be a warning that the pump is ready to fail.
Posted Feb 11th by John Lyons the owner of a Gmc Acadia Sierra 1500 crew cab, humming sound behind the rear seat, fuel pump

Answers from the Automotive Experts

Amanda J. Pierce, MBA John, You may be hearing reverberation from a failing rear wheel bearing, you could have a OBDII scanner take a snapshot of fuel pressure to ensure your pump is acting normal.
⟩ Answered on Feb 11th, 2014 by Amanda J. Pierce, MBA "AJ", Certified Mechanic at BizzM3ch Solutions
Barb Petrey, President - DBK Enterprises Inc at Jiffy Lube Yes. It may be the fuel pump but the only way to check is to take the tank down and then You may as well just replace it. Also, check under the car or see if anything is loose.
⟩ Answered on Feb 11th, 2014 by Barb Petrey, President - DBK Enterprises Inc at Jiffy Lube
Gelina Aquilina, Service Advisor / Mechanic at That sounds like a reasonable guess. Have your fuel pressure checked by a mechanic.
⟩ Answered on Feb 11th, 2014 by Gelina Aquilina, Service Advisor / Mechanic at
Helaine Kurot, Owner/Technician at 360 Automotive It is possible that the fuel pump is on its way out. I would have a repair shop check how much amperage the fuel pump is drawing as this may indicate the fuel pump is going to fail sooner than later. It is also possible that a wheel bearing is also on its way out. Either way, get it checked.
⟩ Answered on Feb 11th, 2014 by Helaine Kurot, Owner/Technician at 360 Automotive

Contribute to this question:

blog comments powered by Disqus

Related Gmc Acadia FAQs

  • Looking at buying a 2010 Acadia with 270,000 miles, but has had good maintenance done, ... Read More
  • Ignition bell not ringing. Auto door lock not unlocking when vehicle is off. Read More
  • High pitch noise when attempting to start a Gmc Acadia. Read More
  • I have a GMC Arcadia should I use synthetic oil? Read More
  • Rear view mirror and driver side mirror are dim for night all the time and compass and ... Read More
  • I ran over a can of flat base paint with my 2002 GMC Acadia. The paint went into my ... Read More
  • I have no power to the trailer plug on my 2008 Gmc Acadia. The turning signals work but ... Read More
  • My "change oil" light has not turned off since getting my oil changed by a friend. Did ... Read More
  • I have a envoy slr. When I reverse there is a squealing coming from the rear. It only ... Read More

Need Car Advice?

Ask The Experts!

Looking for a New or Used Car?

Search for our Certified Female Friendly® Car Buying Marketplace locations

Help Our Charities