Crank no start, security light turns on?

AMIZZELL44

MEMBER
2001 GMC JIMMY
4.3L
6 CYL
4WD
AUTOMATIC
250,000 MILES

The car will turn over and crank but only if you spray ether on iban now when you try to crank it the security light comes on. Fuel pressure issues?

Monday, June 26th, 2023 AT 12:38 PM

4 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,512 POSTS

Is the security light flashing? does the engine run on starting fluid? Also, we should run the codes to see what comes up.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

and

https://www.2carpros.com/articles/car-not-running-advanced

Do you hear the fuel pump kick on when you turn the key on but not crank the engine over? Please go over these guides and get back to us.

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Monday, June 26th, 2023 AT 6:54 PM

AMIZZELL44

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3 POSTS

The security keeps flashing when you try to crank the truck. I can hear the fuel pump coming on.

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Monday, June 26th, 2023 AT 7:39 PM

AMIZZELL44

MEMBER
3 POSTS

What is the normal fuel pressure supposed to be? Because ours is between 20 and 40 PSI.

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Monday, June 26th, 2023 AT 7:40 PM

KEN L

MASTER CERTIFIED MECHANIC
47,512 POSTS

It looks like you found the problem, here is the fuel pressure stats:

Key On Engine Off. 60-66 psi

Here is how to change the fuel pump out. Check out the images (below). Please let us know what happens.

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