How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Bill Your Own Question

Bill
Bill, Chevy Technician
Category: Chevy
Satisfied Customers: 1680
Experience:  GM Certified Master Technician
50714430
Type Your Chevy Question Here...
Bill is online now
A new question is answered every 9 seconds

Chevrolet Silverado 3500: I have a 2007 chevy duramax 3500

Resolved Question:

I have a 2007 chevy duramax 3500 the rear tank seems to not be transferring fuel. Scan tool shows 1.69v front sending unit and 3/4 of a tank. Rear sending unit voltage shows 0.00v. checked and we do have 5v ref at rear sending unit. How does it work what may be wrong
VIN#1GBJK39697E578266
Submitted: 1 year ago.
Category: Chevy
Expert:  Bill replied 1 year ago.

Welcome to Just Answer.com. I'm here to help you and your 100% satisfaction is my goal.

 

Hello,

 

Do you have a dvom to read resistance across the level sensor terminals in the pins where the light blue and tan/black wires would go?? Also do you have any fault codes stored in any vehicle module? A level sensor fault code can shut down the transfer pump. Also, have you removed the sending unit and verified the fuel level?

 

Thanks

 

Bill

 

Customer: replied 1 year ago.

I have verified full fuel level. There are no fault codes in any of the modules. the resistance of the level sensor is 1.4 k ohms which is almost open and incorrect for level. Is that correct?

Expert:  Bill replied 1 year ago.

It should be between 40 ohms and 250 ohms. 1.4k is way over. Remove the tank unit and inspect the level sensor. I'm betting you're going to find the "fingers" that are supposed to be there to contact the level sensor card missing. The level sensor is available separately from the tank meter. Just make sure even if you are not showing any that you clear fault codes from the ecm after replacing the tank meter. That will allow the ecm to re-evaluate each fuel tank and decide if it needs to transfer fuel.

Also, make sure the vehicle is fueled with the key off.

Bill, Chevy Technician
Category: Chevy
Satisfied Customers: 1680
Experience: GM Certified Master Technician
Bill and 6 other Chevy Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money. Todd L Rochester NY
< Last | Next >
  • I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money. Todd L Rochester NY
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • Tim's Auto Repair

    mechanic

    Satisfied Customers:

    7641
    Have owned a repair shop for 25 yrs.
< Last | Next >
  • http://ww2.justanswer.com/uploads/TI/tim37857/2011-10-28_23053_S6301814.64x64.JPG Tim's Auto Repair's Avatar

    Tim's Auto Repair

    mechanic

    Satisfied Customers:

    7641
    Have owned a repair shop for 25 yrs.
  • http://ww2.justanswer.com/uploads/DT/dt69nova/2012-6-15_234154_pic1.64x64.jpg Dave Nova's Avatar

    Dave Nova

    Chevrolet Technician

    Satisfied Customers:

    6870
    ASE Master Certification. GM World Class Certification
  • http://ww2.justanswer.com/uploads/ggrote1/2009-06-27_031011_me.jpg Gary's Avatar

    Gary

    Chevy Technician

    Satisfied Customers:

    5404
    15 years GM master tech
  • http://ww2.justanswer.com/uploads/testedtuff/2009-09-26_170108_pictures.jpg John's Avatar

    John

    Master A.S.E Automotive technician

    Satisfied Customers:

    4071
    A.S.E MasterTechnician A1-A8 w/L1,38 years experience General Motors Master Technician
  • http://ww2.justanswer.com/uploads/RO/rodcuda/2011-7-25_224114_Donhoff1.64x64.JPG Neal's Avatar

    Neal

    Chevy Mechanic

    Satisfied Customers:

    2306
    Shop Owner and Mechanic on multiple makes.
  • http://ww2.justanswer.com/uploads/goodwrench9124/2008-11-09_220838_dscf0007.jpg goodwrench9124's Avatar

    goodwrench9124

    ASE Certified Technician

    Satisfied Customers:

    2041
    Ase Master Certified, GM Master Certified Tech. Awarded GM Top performer, Hybrid certified
  • http://ww2.justanswer.com/uploads/DR/drivefast1971/2012-1-12_172422_0009051tQKh.64x64.jpg Ron Z.'s Avatar

    Ron Z.

    - Chevy Tech -

    Satisfied Customers:

    1912
    18+yrs experience. State Inspector and Chevy Diagnostics
 
 
 
Chat Now With A Chevy Mechanic
Bill
Bill
Chevy Mechanic
1680 Satisfied Customers
GM Certified Master Technician