Fuel pump power
40

Asked by Craft357 Jun 06, 2017 at 10:59 PM about the 1995 GMC Sierra 1500 C1500 SLE Extended Cab LB

Question type: Maintenance & Repair

Good evening, I am seeking advice about my truck.
I changed the oil sending unit and now I have to
hardwire my fuel pump to the battery. It takes a lil
time for my truck to start. The relay is new. Does
anyone know what it could possibly be?

5 Answers
3,640

Lonetech answered 7 years ago

Was fuel pump coming on before you swapped oil pressure switch. If not. Check the ground on frame. Might just need to clean up the ground location. Was other switch leaking

Mark helpful
3,640

Lonetech answered 7 years ago

Before hard wiring. Recheck connection on oil pressure switch. That has to energize before fuel pump will come on. With switch on. Orange wire on. Oil pressure switch should have power and the grey should have power. 12 volts on both. The Orange wire on sending unit is powered by ecm b fuse under the hood junction block. If no power on grey wire coming from oil pressure switch. Engine will not start. If you do have 12 volts on grey check your fuel pump relay.

3 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • Fuel pump power 5 Answers

    Good evening, I am seeking advice about my truck. I changed the oil sending unit and now I have to hardwire my fuel pump to the battery. It takes a lil time for my truck to start. The relay is new....

    1995 GMC Sierra 1500 C1500 SLE Extended Cab LB

    -

    Maintenance & Repair

  • Fuel pump power 3 Answers

    I have a 95 gmc sierra. I replaced the oil sending unit and now I am not getting adequate power to the fuel pump. The pump comes on when I connect it directly to the battery? Any suggestions???

    1995 GMC Sierra 1500 C1500 SLE Extended Cab LB

    -

    Maintenance & Repair

  • Chevy truck fuel pump 2 Answers

    New fuel pump only 8 volts at pump and at the relay is 12 volts at the orange wire nothing else at the others only power to the to orange won't turn on please help me out thanks

    1993 GMC Sierra 1500 C1500 SLE Extended Cab Stepside SB

    -

    Maintenance & Repair

  • fuel pump issues 3 Answers

    Will a 96 tank and fuel pump work on a 94

    1994 GMC Sierra 1500 C1500 SL Standard Cab SB

    -

    Maintenance & Repair

  • Fuel Pump Replacement 1 Answer

    How do you put a fuel pump on a 1995 GMC Sierra C1500? Need step by step directions please??? Got the gas tank dropped, what's next???

    1995 GMC Sierra 1500 C1500 SLE Standard Cab LB

    -

    Maintenance & Repair

Sierra 1500

Looking for a Used Sierra 1500 in your area?

CarGurus has 6,516 nationwide Sierra 1500 listings starting at $3,975.

Postal Code:

Shortcuts

Search GMC Sierra 1500 Questions

CarGurus Experts

  • #1
    yetilikesbeer
    Reputation
    12,850
  • #2
    dragonflyoffshore
    Reputation
    11,810
  • #3
    John Saffrahn
    Reputation
    11,720
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford F-150
321 Great Deals out of 13,751 listings starting at $1,712
Used GMC Yukon
14 Great Deals out of 898 listings starting at $4,555
Used Toyota Tacoma
50 Great Deals out of 1,081 listings starting at $9,998
Used Dodge RAM 1500
4 Great Deals out of 63 listings starting at $3,000
Used Chevrolet Tahoe
14 Great Deals out of 904 listings starting at $12,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.