HELP! 97 fuel pump wire harness issues

[dodgechick82]

the old wiring is the 1st pic 2nd is what new harness looks like how do i wire this up ? when i match colors pump comes on but when i set it up trying to follow diagram on paper fuel gauge on dash jumps all the way passed full and pump does not come on my brain is tired changed crank sensor n fuel relay fuse n this is new pump spectra premium sp415m model

 

[dodgechick82]

and also first pic is a,c,e,f order not what it shows on paper for diagram?

 

[east302]

No idea if it will help, but here’s a video on it. Maybe you’ll spot something of use.

 

[Fless]

the old wiring is the 1st pic 2nd is what new harness looks like how do i wire this up ? when i match colors pump comes on but when i set it up trying to follow diagram on paper fuel gauge on dash jumps all the way passed full and pump does not come on my brain is tired changed crank sensor n fuel relay fuse n this is new pump spectra premium sp415m model

Can you show us a pic of the front of this connector? What make/model/year did it come off of?

 

[dodgechick82]

came off 97 tahoe 4 dr vortec can show after when u go out the truck to wire it up again was hoping for a good response

 

[dodgechick82]

No idea if it will help, but here’s a video on it. Maybe you’ll spot something of use.

yes i watched this thank u when i follow diagram on paper my pump does not come on but my fuel gauge works and isnt all the way passed full on dash but when i match color for color the pump works comes on n fuel sprays out up front under the hood

 

[dodgechick82]

I REALLY NEED HELP!!!

I have been trying to figure this one out for some time now.. I have a 97 with a rectangle fuel pump wire harness connector. THe issue I am having is my husband threw away the old connector before installing the new one which has 4 WHITE wires!!!! If anyone could help me out as to which color wires plug into with alphabetical spots on the harness. I have white wires going into a, c, e, and f.........


He is working 7 days a week and I am tired of hoping he will find some time and energy to do this... I am not afraid to do the work myself, in fact probably should have in the first place.

i have similar situation but my wires are not all white same order old connector a,c,e,f but on new fuel pump diagram they send with it shows different n my wires r 2 blacks but one is solid n other is black/brown n grey and purple

 

[exp500]

4 wires, 2 for gas gauge,2 for fuel pump. Usually fuel pump are larger diameter. Find the Ground spot near gas tank, that should be or connect to fuel pump ground ( to help with which terminal on pump is ground).if small dia white wire,usually signal to gas gauge/ecm. Careful about black with white stripe.
Wiring diagrams are here-

Helpful Links

Helpful links- If this is a successful post maybe it could be stickied! Here's the first- https://www.gmt400.com/threads/88-95-service-manuals.43575/ https://67-72chevytrucks.com/vboard/showthread.php?t=700011

www.tahoeyukonforum.com

 

[Fless]

@dodgechick82 started a new thread:

1997 tahoe 4x4 4door vortec crank no start after installing new pump

i have checked ground straps they r good replaced crankshaft sensor n fuel relay fuse when i connect wiring to new harness matching colors pump comes on n fuel sprays out the front under the hood and fuel gauge goes passed full on dash but there is not a full tank if gas and when i follow...

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