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2004 GMC Sierra 1500 Question: why has my truck gone through three fuel pumps in less then one year

 

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reynolds5154, 4.8L V8, Greenwood, IN, May 04, 2013, 07:33
 Rookie

could there be something else causing a problem

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    May 04, 2013, 08:06
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     Master

    OEM/GM pumps or aftermarket??

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    reynolds5154, May 04, 2013, 08:33
     Rookie

    after market pumps

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    pushrod, May 04, 2013, 08:38
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     Master

    Brand name? Was the connector to the pump module changed?

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    reynolds5154, May 04, 2013, 08:58
     Rookie

    they look the same one pump was from crq&rally the # on the box is mu1314 i cant find the # on the other one but it was from 4 usa.

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    pushrod, May 04, 2013, 09:04
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     Master

    The connectors give trouble, i always replace it along with a top drawer pump module with no problems later. AC or Delphi pump mod.
    Airtex ok.

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    reynolds5154, May 04, 2013, 09:10
     Rookie

    ok so i should just break down and get a top notch pump instead of a nock off right.

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    pushrod, May 04, 2013, 09:36
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     Master

    Well first check the connector to the pump for burnt/melted condition IF pump is not running! Check fuel pressure make sure it not another problem like VAT (theft) system No dont just run out and buy parts until problem is properly diagnosed!! All we can do is suggest certain possible causes.However if pump replacement is required buy a good unit.

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    reynolds5154, May 05, 2013, 08:03
     Rookie

    ok thanks for all your imformation i appreciate it i checked the presure and it had 30 one time and 10 another it throws the tighten gas cap code evry now and then with this pump thats in there now it will idle but real ruff and just for a little bit i tapped on the tank for a bit an had my son give it some gas and it ran just fine as long as i was tapping on it

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    pushrod, May 05, 2013, 08:09
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     Master

    I say the pump is your trouble but check the harness connector inside to see if any sign of heat which is caused by high resistance which is caused by poor connection. Dont have to purchase pump from GM but get a quality part! New connector should come with pump module.

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    reynolds5154, May 05, 2013, 08:57
     Rookie

    ok will do thanks again for all your help

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