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jean turcotte Posted on Jan 11, 2015
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The fuel pomp stop working i change the fuel pump still dont work

Change fuel pompe still dont work 4x4 5.7

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Roy Funkhouser

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  • Expert 140 Answers
  • Posted on Jan 11, 2015
Roy Funkhouser
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There are times a failed fuel pump may cause a blown ECM fuse. Usually ECM B or ECM / PCM 2 fuse will be blown. There are occasions the fuel pump relay may be bad. I have on Occasion found the ECM circuit failed from the PCM. Also check and make sure the security system has not disabled the fuel system. If this is the case a problem may exist in the ignition / security PASS or VATS system.

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  • GMC Master 15,088 Answers
  • Posted on Jan 11, 2015
Thomas Perkins
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Check fuel pump relay.

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