Question about 2000 GMC New Sierra 1500

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When mech plug into truck there reading no vehicle found

When mechanic plug into truck there reading no vehicle found whats wrong with wiring

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Try another repair shop or a auto parts store some times a scanner just wont pick up a vehicle. if still the same problem check the obd 2 connector for power

Posted on Mar 09, 2009

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did it set a trouble code when you plug in an obd2 scanner?

usually, the vehicle speed sensor or it's wiring to it is the culprit, but read the following yahoo link i posted for more diagnosis

https://answers.yahoo.com/question/index?qid=20120317014746AAWJFZ7

found this helpful answer from an auto mechanic on JustAnswer com

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HOW TO FIX P0303 CODE FOR FORD FREESTAR?


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at least it's focused on cylinder number 3; so follow one of the thousands of sites that tells what's wrong with your minivan


but, when was the last time ALL the plugs were replaced? it's kinda due by now since even platinum type plugs do wear out over time

"A code P0303 may mean that one or more of the following has happened:
Faulty spark plug or wire
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Read more at: http://www.obd-codes.com/p0303
Copyright © OBD-Codes.com

do the most obvious and check / change the plug & check the wire from the coil to the plug first





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That wasn't a mechanic you went to

All hoses or Evap Solenoids are not fine
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That has nothing to do with diagnosing an evap issue

Need a professional scan tool & evap smoke machine
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Okay had some thing like this happen to me ,First dose your car smell like something like plastic is burning under the hood ? If not try having your mech do a scann on your car . I found than they can pin point but my car totally baffled them It would run after replacing every senor. My mechanic also found the big problem There is a big bundle of wires runiing behind the engine. Just above the rear manifold .(back spark plugs) Look down and see a wire harness it can get on the manifold and melt throught the thick insulation and burn wires and give false codes .this wire harnes and the big bundle of wires run the whole car so be car full

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