fuel pump problem - Pontiac G6 Forum
View Poll Results: What can be wrong with fuel pump
where is relay for fuel pump located? 2 100.00%
How can i check fuel pump? 1 50.00%
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post #1 of 11 (permalink) Old 11-30-2009, 10:04 PM Thread Starter
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Unhappy fuel pump problem

Does anybody knows what could be wrong with fuel pump when it does not work? (Iput new one in and still nothing) i would appreciate any help
thanks again!!!
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post #2 of 11 (permalink) Old 12-01-2009, 08:14 PM
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could you be a little more descriptive of the problem?

it could be the fuse.
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post #3 of 11 (permalink) Old 12-01-2009, 11:46 PM Thread Starter
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Basically my G6 does not wanna start for some reason.
Me and my buddy started directly though a computer but after that it sends us code that we have no comunication between block and tranny for some reason! could it be Security problem?
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post #4 of 11 (permalink) Old 12-03-2009, 05:52 AM
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yeah you need a professional mechanic for this ... cuz this could be anything such as a crank position sensor or something.
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post #5 of 11 (permalink) Old 05-03-2012, 08:34 AM
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i had the same issue, couldnt hear the pump when key was turned to on position.

FINALLY FOUND THE PROBLEM AFTER 6 MONTHS OF FRUSTRATING STARTS AND MONEY WASTED!

its the connection between the fuel pump to the relay behind the rear fusebox.
I pushed the connection (wire harness) together to the back of the fusebox where the fuel pump relay is located on the fusebox. seems to be a misconnection that won't allow the power to reach the fuel pump.

still havent fixed it properly but atleast i know where the problem is located.
hope it helped you guys somehow...
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post #6 of 11 (permalink) Old 05-03-2012, 01:31 PM
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Thanks. Good info. Have you tried putting silicone dielectric grease on the relay contacts & inserting & removing it a few times? That may or may not help. The usual fix is just to replace the fuse block (which is easier than you might think).

Last edited by greenman; 08-29-2014 at 04:52 PM.
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post #7 of 11 (permalink) Old 05-03-2012, 04:54 PM
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Thread Revival Whoo!

Greenman, would you happen to know how much a new rear (trunk) fuse block goes for? I'm worried my bent tabs for the parking lights fuse may come around to bite me in the butt one day. haha
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post #8 of 11 (permalink) Old 05-03-2012, 05:21 PM
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Quote:
Originally Posted by CruisinG6 View Post

Greenman, would you happen to know how much a new rear (trunk) fuse block goes for? I'm worried my bent tabs for the parking lights fuse may come around to bite me in the butt one day. haha
Not off the top of my head. They are more then they should be because there is only oem available.
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post #9 of 11 (permalink) Old 05-04-2012, 07:02 AM
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i havent tried anything to fix it yet. but when it doesnt wanna start i havta pop the trunk and stick my hand behind the fusebox to push it back in. it helps with the auto start, keeps cranking til the connection is made then fires instantly. it seems to happen quite often now. i think this weekend im going to pull out the fusebox and re-wire it but for now ill try that silicone shit on the relay.

pretty embarrasing when your on the first date and the car doesnt wanna start after dinner. kept trying to crank after half an hour, but all it was, was a dumb connection error.

spent about 900$ to replace the fuel pump. waste of time and money...
other then the amount of gas it burns i finally love this car again....
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post #10 of 11 (permalink) Old 12-24-2013, 05:58 PM
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i think i might be having the same problem, do you mind posting a picture of where your had the wiring disconnect?

and that first date bit is hilarious cuz it happened to me 3 nights ago, but if she still wants to hang out, then you know she aint materialistic!
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post #11 of 11 (permalink) Old 12-25-2013, 12:53 PM
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Quote:
Originally Posted by Jimbo71sc View Post
i think i might be having the same problem, do you mind posting a picture of where your had the wiring disconnect?
that issue involves the socket that holds the fuel pump relay. try manipulating the relay & listening for the pump to run. replacing the rear compartment fuse block is the usual fix. visually, you'll see evidence of localized heat buildup if this is your problem.
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