GM Truck Club
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 5 of 5
  1. #1

    Question 91 GMC Fuel Pump Wiring Diagram

    I need help on a fuel pump problem. This truck will not start even if I switched the saddle tanks, I also noted that the fuel gauge seems to register at the same place. I tried changing the fuel pump relay and the problem it still the same. Checked all of the fuses and searched for any other relays that might be part of this circuit. Has anyone else have had this same problem?

  2. #2

    Red Z71 Max's Avatar
    Join Date
    May 2011
    Myrtle Beach, SC
    Blog Entries


    Welcome to the Club!! You may want to post this in the Technical question section. Im sure someone should be able to answer your question.

    (Scott) Myrtle Beach, SC
    January 2012 ROTM WINNER
    2011 GMC Sierra Z71 MAX 6.2 L w/ Trailering Package
    Rough Country, XD Rockstars, Nitto Trail Grapplers, N Fab, Lund Genesis, Putco, Gator Grip,
    Flowmaster 40 series, Diablosport InTune, Banks Ram Air CAI,
    WeatherTech, AVS Aeroskin, Tow Mirrors,

  3. #3


    Thanks! I don't know how this works, I do know now that I have made an error when I had posted this.

  4. #4


    Welcome! Don't worry about the 'error'; no one minds. People here are helpful and @Red Z71 Max was just trying to direct you to post in a section relevant to your problem so that you would get the maximum number of page views ... from people most able to help you. Sadly I've no experience with your issue and you've already checked the things I would have checked.

  5. #5


    X3 on @SurrealOne post. Lots of information to be gleaned from this site many many devoted and experienced individuals. hit the search engine and see if you can get a quick reply. Good Luck. The only thing I would add is check the switches themselves as I used to sell many of them.
    2010 Chevy Silverado Z71 ext cab.4x4
    72 Monte Carlo 350-415 hp- sold (June 2011) to pay medical bills
    79 Impala 350 4bbl 375 hp- sold (June 2011)to pay medical bills

    "If He asks you to go a mile go two"

Similar Threads

  1. Wiring Diagram
    By Grizzly Guy in forum Chevy Blazer Forum (GMC Jimmy)
    Replies: 2
    Last: 07-19-2011, 04:32 PM
  2. Wiring harness to fuel pump
    By spaceball04 in forum GM Electrical Tech
    Replies: 2
    Last: 06-20-2010, 06:53 AM
  3. Fuel pump issues, wiring?
    By cj5daddy in forum General Chevy & GM Tech Questions
    Replies: 1
    Last: 03-20-2010, 05:54 AM
  4. Wiring diagram ....
    By rwslippey in forum Audio, Video & Gadget Tech
    Replies: 0
    Last: 02-19-2010, 12:03 AM
  5. wiring diagram
    By DAREDEVIL in forum General Chevy & GM Tech Questions
    Replies: 1
    Last: 01-05-2010, 11:40 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts