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How you doing Scott? I’m trying to put in a fuel pump for a…

How you doing Scott? I’m...
How you doing Scott? I’m trying to put in a fuel pump for a 2004 Grand Prix but I need to change the harness. The harness from the vehicle is A/Purple, B/Grey, C/Black and D/Black-White; and the harness is A/Black, B/Grey, C/Purple and D/Black. How do I go about wiring the new harness to the vehicle?
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Answered in 4 minutes by:
3/28/2018
Amedee
Amedee, GMC Technician
Category: GMC
Satisfied Customers: 28,342
Experience: ASE Technician advanced level specialist
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Hello and welcome!

My name is ***** ***** I can assist you with your question.

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Would a wiring diagram of the fuel pump assembly help?

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Certainly. One moment please

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Pin A should be a purple/white wire which is the fuel sending unit signal wire. This wire goes back to the PCM. (it does change color half way to the PCM to a gray wire)

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That should do the trick. If you need further questions, please let me know. If a connector view would help further, let me know as well and I will post it for you.

I am glad I can help! My goal is to give you the best experience possible! I hope I have earned a 5-star rating! Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today. If you need more assistance, please use the reply box and let me know.

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Customer reply replied 4 months ago
The first two pictures are the old connectors on the car

Would you be willing to speak on the phone?

Amedee
Amedee, GMC Technician
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