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5.3 engine knock

Discussion in 'GM Powertrain' started by treefarmer, Jan 27, 2008.

  1. treefarmer

    treefarmer New Member

    I have a 2001 silverado with a 5.3. When starting with cold engine, after about 10 sec it starts to knock. It continues for about 30 sec, never to be heard again until the next cold start. Not a lifter tick. Gets louder when put in gear (auto trans). Any ideas?

    Chevy Engine
  2. dwill3015

    dwill3015 New Member 1000 Posts 100 Posts

    Welcome to the site!
    My Wife's 2001 Suburban 5.3 has the same prob. and I know we have had other discussions on here about it common with most 5.3's. Maybe someone can find some of those threads for us?
  3. TahoeFever

    TahoeFever New Member 100 Posts

    dealership found 2 plugs loose and the knocking went away

    that knocking drives me nuts now i got a bearing noise when the truck is cold

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