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05 vette start failure

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Old Mar 10, 2017 | 09:10 AM
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Default 05 vette start failure

My 05 with 15000 km. starts then shuts down after a few seconds was told it may be main computer and must be changed by dealer . Any help would be great . tks. The car starts , tack and speedo goes all the way to top then drops back to 0 then it shuts down, friend checked the codes 90% of codes on the car showed red he said with so many codes it must be the main computer.... car is in storage now and code list #'s are in it. p.s. manual trans

Last edited by mesz28; Mar 10, 2017 at 04:19 PM.
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Old Mar 10, 2017 | 09:50 AM
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Originally Posted by mesz28
05 with 15000 km. starts then shuts down after a few seconds...
Fuel pump already ruled-out?
What're the code(s)?

At face value symptom's more like a failing fuel pump than a bad/failing ECM. YMMV, of course.

Last edited by Landru; Mar 10, 2017 at 09:51 AM.
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Old Mar 10, 2017 | 10:32 AM
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Auto or manual? Does it shut down when just idling or when you put it in gear?
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Old Mar 10, 2017 | 02:00 PM
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Originally Posted by Landru
Fuel pump already ruled-out?
What're the code(s)?

At face value symptom's more like a failing fuel pump than a bad/failing ECM. YMMV, of course.
and unfortunately I do not believe a code would be set for low pressure.
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Old Mar 10, 2017 | 05:13 PM
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Originally Posted by extrapilot
...and unfortunately I do not believe a code would be set for low pressure.
A valid system failure & computer's *not* programed to recognize.
Perfect issue for bilking owners dry in diagnostic time.
The 'new' GM.
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Old Mar 10, 2017 | 06:02 PM
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There are many things it could be but I am dubious with the computer diagnosis. Crank or cam position sensors to come to mind. Fuel pump not delivering enough fuel - a pressure gauge on the fuel rail would rule that out. How old is the battery? Is the gas cap on correctly?

Please keep us posted and good luck.
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Old Mar 10, 2017 | 07:32 PM
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You need to check the fuel pressure first, then hook the car up to a Tech 2 scanner to see where the problem is originating from.. If you can find a independent shop, or an individual with a Tech 2 that knows how to use it, you could save a bunch of money...It's almost impossible to trouble shoot these cars without a Tech 2 scanner. At the very least the scanner will point you in the right direction to help find the problem...WW
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Last edited by WW7; Mar 10, 2017 at 07:37 PM.
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