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93 GMC 3500 weird noise

Discussion in 'Chevy Trucks' started by Gmgbo, Oct 19, 2010.

  1. Gmgbo

    Gmgbo Senior Member
    Messages: 159

    When I turn the truck on and shut it off a weird clicking noise comes from the passenger side under the dash. It is pretty loud, turns peoples heads, and everyone asks what the heck is that noise. Stops after about 30 seconds.

    Any ideas?
     
  2. RichG53

    RichG53 PlowSite.com Addict
    Messages: 1,135

    Heater Actuators ????
     
  3. Gmgbo

    Gmgbo Senior Member
    Messages: 159

    I dont know, heat and ac work in all areas on all fan speeds
     
  4. RichG53

    RichG53 PlowSite.com Addict
    Messages: 1,135

    This is not a heat-ac thing ...It's the door in the duct that opens and closes to direct air were you select..
     
  5. Schnabel Plowin

    Schnabel Plowin Senior Member
    Messages: 139

    The starter doesn't need shimming, does it? Mine did that for maybe 4 seconds after ignition, but 30 seems too much for that.