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  1. #1

    Default 1996 GMC Sierra 5.0L Wont start?

    It's got a 135K on the motor up until Wednesday it was running strong as ever got in it Thursday morning it just turns over and over won't fire I have checked the fuel pressure (Cranking 63lbs) I've got good blue spark but the dam thing still won't fire up I've checked fuses but a pocket scan on it with no errors I am flat stumped why it just won't start any help would be appreciated

  2. #2

    Default

    I got issue same on 93 chevy 5.7 same motor different torque according to rescearch ignition control module is first then if it doesn't turn on on and u have power to both injectors it will be your ecm or pcm if it is gas w/o 4 speed automatic overdrive pcm gas or diesel w/4 speed automatic overdrive tcm normally diesel 6.5 motors yeah i had issue similiar replace fuel pump,filter,rebuild tbi kit fuel presure regulator,replace injectors,replace fuses, relay- most answer and results cap and rotor with icm= ecm
    15 years experience gm

  3. #3

    Default

    I think I have figured it out of all things I think it may be the ECT sensor I waited until it got warm today truck sat in the the sun all day and the dam thing fired right up

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