Question about 2003 GMC Sierra

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We have a 2003 GMC Sierra duramax diesel truck We took it into the shop last week because it would not start. They told us that the fuel filter was sucking air and changed it. The truck then ran fine for about 2 days . It is now in my driveway and will not start. Any ideas what it could be this time?

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  • Anonymous Mar 13, 2009

    I HAVE A 2003 CHEV SIVERADO IT START LAST FALL TO GET HARD TO START , PLUG IN OR NOT ,HE WILL TURN A LONG TIME BEFORE E FINDLAY START. AT ONE TIME I HAVE TO GET TOW TO GM DEALER , BECAUSE E DIN'T START. THEY SAY I HAVE WATER IN MY FUEL ,SO THEY GHANGE ALL THE FILTERS AND THEY SAY IT WAS OK .SO I PIC IT UP THAT NIGHT AND THE NEXT MORNING SAME THING AGAIN ,SO I BLEED THE FUEL FILTER ,PRIME IT AND FINDLAY IT START SO NOW I AVE TO DO THAT EVERY MORNING ,AFTER IT START IS RUNNING FINE BUT WEN I STOP SOMEWARE IT TURN A LONG TIME BEFORE IT START AGAIN , SO IF YOU AVE ANNY IDEA WHAT CAUSE THIS PLEASE TEL ME . THANKS

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I have a 2003 , 2500HD Duramax with 223000km . I was way up in the north country when this started to happen to my truck. I found an old mech. who had to come back into the bush to give a boost because i couldn't start my truck as well. He told me he has seen this before on the 03's. Long story short it was the injectors the dealer replaced all 8 under warrenty. GM sent me a letter later saying they will cover all diesel parts under warrenty for 320,000km and another 6yrs. its your injectors change your oil more often until you get it fixed. To check this park your truck for the day and try starting it if it will not start. Go under the hood and prime the fuel filter (pump until it gets hard) then turn the truck over a little and prime the filter again until hard then start the truck. if this works then get the injectors replaced by GM. This worked for my truck hope it helps. Rick

Posted on Mar 24, 2009

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First check the alternator and the drivebelt and also check the fuel pump relay and the fuse for the sending unit as well and check all vacuum lines especially the one behind the throttle body to make sure none of them are off

Posted on Mar 08, 2009

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k

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