Gas gauge acting erratic

Discussion in 'General Chevy & GM Tech Questions' started by rcrq500, Dec 2, 2008.

  1. rcrq500

    rcrq500 New Member

    I have a 2001 Silverado LS and from time to time I notice the gauge reading empty and the fuel light on and then it goes back to read the actual fuel level. It tends to happen when I have less than 1/2 a tank but not completly empty.
    Any ideas?
  2. retired

    retired Rockstar 100 Posts

    Most likely the sending unit is going bad.
  3. rcrq500

    rcrq500 New Member

    Thanks for the reply. I thought the same thing but wanted different opinions.
  4. JMoney02

    JMoney02 Epic Member 5+ Years 500 Posts

    Eliminate the obvious and most likely it is going to the sending unit. Check connections, wiring, grounds all the standard stuff. Keep an eye on it and see if it does it again...

  5. k.daddy1

    k.daddy1 Rockstar 100 Posts

    Typical Chevy problem. The fuel gauge sensor is all part of the fuel pump assy. You'll have to replace the whole assy, be prepared, it's expensive. Stay away from the advance auto/autozone (Aztec assy) they are junk.
  6. GaryL

    GaryL Epic Member 5+ Years ROTM Winner 1000 Posts Platinum Contributor

    You don't have to replace the whole assembly, GM sells the sending unit alone for around $100. I did it to my Dad's 05 Yukon XL this past summer. You still have to pull the pump though.
  7. JMoney02

    JMoney02 Epic Member 5+ Years 500 Posts

    Correct! Not that bad if you have the time and tools and want to save some bucks....

  8. rcrq500

    rcrq500 New Member

    Thanks everyone. Now I know where to start looking.
  9. exceler8

    exceler8 Member

    You dont need to do the whole assm. But I would strongly recommend that you do the whole thing. One goes, the others are close too. Plus it is not like changing a air cleaner. It is a P.I.T.A So do it all at the same time once..... :great:

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