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'02 2500HD squeal on start up.

Discussion in 'Chevy Trucks' started by Joel B., Feb 4, 2007.

  1. Joel B.

    Joel B. Senior Member
    from MN
    Messages: 233

    When I start my truck cold I hear a squeal that lasts for about 10-15 seconds then slowly fades away. I hear it faintly for a couple miles until everything warms up. It almost sound like the belt squealing but I can't be sure. Can the belt be tightened?

    Anyone else notice this?

    Thanks for any advice,

    Joel B.
  2. Sydenstricker Landscaping

    Sydenstricker Landscaping PlowSite Veteran
    Messages: 3,882

    Try spraying some belt dressing on it. That should solve your problems
  3. lodogg89

    lodogg89 Senior Member
    Messages: 412

    i have the same thing on my 05, only when its real cold, like a 2-3 sec grunt noise when it first starts.h
  4. Sydenstricker Landscaping

    Sydenstricker Landscaping PlowSite Veteran
    Messages: 3,882

    It could also be the belt tensioner bearings going bad.
  5. dlcs

    dlcs 2000 Club Member
    Messages: 2,142

    My '99 has done this for the last couple of years. Changed belts and replced the idler pulley last year, thought that would take care of it. But nope, same thing. Once it is warmed up it quiets down.
  6. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    lodogg, the "grunt" noise your probably hearing is the power steering pump due to the extreme cold. What happens is when you start the truck, the pump immediately begins to try and move fluid through the system but since the wheels aren't being turned the fluid is being bypassed through the pressure relief valve. Due to the cold fluid being forced through the valve is causes the fluid to "chatter" against the relief until it opens fully.