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6.5 diesel injection pump

Discussion in 'Chevy Trucks' started by cat320, Oct 29, 2002.

  1. cat320

    cat320 2000 Club Member
    Messages: 2,224

    Has any one else been having problems with there pumps?This will be my 3rd one on the truck.:(
  2. mulchmonkey2000

    mulchmonkey2000 Senior Member
    Messages: 106

    what's happening to them? Are they just totally quiting on you? I'm having problems with my ecm frying. Just bought the truck in june and the 2nd one is going bad already. Makes me wish i stayed with gas. what year do you have?
  3. snow

    snow PlowSite.com Veteran
    Messages: 1,002

    I had a friend who had some trouble with his 94 K2500 6.5 diesel. He thought it was the injection pump, but it turned out to be the driver unit. Might be the driver, take it to a garage and have them see what the codes read on their scan tool.

  4. TurfPlus

    TurfPlus Senior Member
    Messages: 179

    The pump driver is a very common problem. If you decide to replace it yourself...Make sure the diode is in the box and you install it with the driver.

  5. Brickman

    Brickman Senior Member
    Messages: 133

    I could tell ya what is wrong with it, but it would piss people off. :D :D So I will keep a lid on it.
  6. TLS

    TLS PlowSite.com Addict
    Messages: 1,425


    What year is it?

    For the 94-98 trucks injection pump warranty was extended to 11 yrs or 120,000 miles.

    You may want to pay www.thedieselpage.com a visit. Search works there and there's tons of posts about what it could be.
  7. plowking35

    plowking35 2000 Club Member
    from SE CT
    Messages: 2,923

    The most common problem is the PMD mounted on the injector pump. If your truck will be going along just fine and shut off like someone turned the key off, the PMD is the most likely suspect. They are less than 100.00 to relocate a new one from off the IP. However since GM has extended that warranty, I let them eat that cost. I have had one go at 48K but none since. The dealers are useless, I had to expalin what was wrong, and how the X warranty worked, before I could get my truck back from them.
    Since GM will pay for the whole pump to be replaced the dealers just un bolt the old and install the new one.
    The GM diesel page has all the tech info.
  8. cat320

    cat320 2000 Club Member
    Messages: 2,224

    My truck is a '97 Had a freind come down with a scan tool and i got all the codes off of the truck.Just got it back from the dealer and yes I made sure that i gave then the paper from GM with the 11 year warranty.They put the whole thing back together and found that it still rand like bad so they took the top off again and had to replace a colappsed fuel line from the filter to the pump.I'm really getting fed up with this truck gonna go thrue the winter with it then get into a Ford I think,not gonna deal with having to rush to put a plow and sander on the new truck right now.I was talking with a guy just the other day and he has a '98 K35 dump with the 6.5 and he is selling it because he's having problems with his but he beats the sh*t out of it. I have had nothing but one problem after the other.
  9. TLS

    TLS PlowSite.com Addict
    Messages: 1,425

    Sorry to hear about your problems. When you finally get a "good" (newer) pump, they are usually OK for a long while. The Fuel Solenoid Driver that Dino was talking about does have a tendency to "go" but when relocated on a COOLER (FSD Cooler) insead of the hottest part of the engine, they last a good long time.

    If you got it back after the pump swap and it runs crappy, ask them what they set the pump timing at. There is quite a varience here and lots of power can be gained or lost with the stroke of the Tech II.

    These engines, while not nearly as powerfull as a PS or Cummins can be made to run real well and reliably in the 250 hp range. Its when your sneaking around the 300hp range that the bottom ends like to "exit stage left" :waving:

    Good Luck
  10. gslam88

    gslam88 Senior Member
    Messages: 168

  11. cat320

    cat320 2000 Club Member
    Messages: 2,224

    And gm wants to know why people are going to ford and dodge.I should do a poll to find out how many have had trouble with the 6.5.