I need the fuel pump assembly schematics

BRANDX

MEMBER
2002 CADILLAC SEVILLE
4.6L
129,000 MILES

The car listed above has a Northstar motor. When trying to replace the fuel pump the wires on the plug for the modulator sending unit became unplugged.
Please.

Monday, November 18th, 2019 AT 5:06 PM

5 Replies

JACOBANDNICKOLAS

MECHANIC
109,747 POSTS

Hi:

I attached a picture of the connector which includes pin identification, wire color, and what each wire is for. Let me know if this is what you needed.

Take care,
Joe

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Monday, November 18th, 2019 AT 8:22 PM

BRANDX

MEMBER
5 POSTS

Helps somewhat. Can I get a diagram of a fuel pump for 2001 Cadillac Seville Northstar fuel pump replacement? Need to rebuild one so need the break down of components.

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Tuesday, November 19th, 2019 AT 2:04 AM

BRANDX

MEMBER
5 POSTS

The ECM or level sensor has separated from the main fuel suction motor and not sure what wires go where on the 4 pin plug fof level sensor on replacement.

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Tuesday, November 19th, 2019 AT 2:17 AM

BRANDX

MEMBER
5 POSTS

Also, would like to check the inertia switch or fuel shut-off switch on a 2002 Cadillac Seville on the Northstar motor but don't know its location.

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Tuesday, November 19th, 2019 AT 2:31 AM

JACOBANDNICKOLAS

MECHANIC
109,747 POSTS

Hi:

This vehicle doesn't have a fuel cutoff switch. The fuel pump runs for 2 seconds when the key is first turned on in order to prime the fuel rail. The pump also runs during cranking, and when the engine starts and is close to idle speed, the pump is stays on via the PCM.