Bad water pump?????

Discussion in 'Trucks and Trailers' started by dfor, Nov 28, 2000.

  1. dfor

    dfor LawnSite Senior Member
    Messages: 828

    I have a 1998 GMC 2500 4x4. For the past few days or so it has been leaking antifreeze from the water pump area. Do the water pumps on these trucks have a period of time where they leak before they quit working? The truck only has 58,000 miles.

    BUSHMASTER LawnSite Senior Member
    Messages: 519

    change it before it comes apart and really cost you some $$$
    50-85 k is real good for a water pump..
  3. bob

    bob LawnSite Platinum Member
    from DE
    Messages: 4,260

    I have a 1995 Chevy.I just had mine changed at 89k miles. It started leaving anti-freeze drops on the driveway. Plus I could smell it. Parts and labor were close to $275. One time my truck sat for about 2 months. For some reason the breather hole, on the bottom of the pump, spit out a "quarter" size puddle of fluid on the garage floor.
  4. dfor

    dfor LawnSite Senior Member
    Messages: 828

    I had the water pump changed yesterday. It ended up costing $207. $127 for pump and $75 labor. (for anybodys future reference)
  5. John DiMartino

    John DiMartino LawnSite Silver Member
    Messages: 2,555

    I think the 96 and newer Vortec water pumps do not last as long as the older ones.Ive done 3 so far,on trucks that werent even 2 yrs old.
  6. guntruck

    guntruck LawnSite Senior Member
    Messages: 527

    From what i was told from a friend (mechanic), he said the newer trucks "98" and up have a change in impeller design which is the cause of the shorter life. As far as the leaks each one has a small weep hole where it drips when the unit is ready to go up.
  7. bandit_36

    bandit_36 LawnSite Member
    Messages: 49

    Guntruck's friend was right about the change in the water pump but it was not the impeller. They went from a 7 ball bearing to a 5 ball. So as the bearing starts to wear it takes the impeller seal out. They also did the same thing with the alternators & you can't swing a stick without hitting a late model GM truck owner who hasn't had to have a new alternator at least once.
    GM keeps us pretty busy here at the dealership.

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