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1993 GMC Sierra 1500 4.3L V6 will turn over but won't crank

OK so I can turn over my engine but it wont crank...the other day it cranked but I started noticing this problem when I was driving and I would punch the gas and it would bog down...well finally it got worse and worse and then finally wouldnt start...At this point it would start and then die start and die and then it wouldnt start at all...this was within a 20 minute time zone....anybody got any suggestions?? I have a chevy s10 that has done the same thing...we have replaced the fuel filter and the fuel pump but this did not fix the problem?? HELP!! OH..we have spake at the plugs...timing is fine...could it be relays?? And if the relays were bad would we be getting any gas at the injectors?? THANX

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  • easter_r
    easter_r Feb 18, 2012

    Ok so we replaced the fuel pump and this did not fix the problem...we ran a code scan and this revealed that everything was fine and we had no bad codes.........any other suggestions would be greatly appreciated......does anyone know of common problems with the fuel system on this model truck?? Thanks again!

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  • Cars & Trucks Master
  • 14,036 Answers

Could be faulty egr valve, faulty idle speed control, faulty engine coolant temperature sensor.stuck open pvc valve, i would have vechicle code scan first before buying new parts.meant to tell GMC SIERRA -C1500 AND C2500 CAN BE A 4.3 ENGINE OR A 5.0 5.7 6.2 AND 6.5 DIESEL ENGINE.

Posted on Feb 13, 2012

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Posted on Jan 02, 2017

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