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2005 gmc envoy

Discussion in 'GM Powertrain' started by sandimeadows, Aug 15, 2010.

  1. sandimeadows

    sandimeadows New Member

    My 2005 Envoy just started making a "whining" noise when I accelerate???
  2. sandimeadows

    sandimeadows New Member

    my 2005 GMC Envoy just started making a "whining" noise when I accelerate????
  3. silveradotrailblazer

    silveradotrailblazer Epic Member 5+ Years ROTM Winner 5000 Posts

    Welcome to the club. Check the alternator, sounds like what my wifes'05 trailblazer did. She has the 4.2 motor.
  4. TrailLeadr

    TrailLeadr Epic Member 5+ Years 1000 Posts

    *Threads merged*

    Please do not double post in different area's of the board.
  5. ChevyFan

    ChevyFan November Beard Grower - Cancer Fighter Staff Member 5+ Years 5000 Posts

    Did you ever get this solved? My neighbor has a sweet looking 2005 Envoy with low miles, thing looks pristine.
  6. Salesguy1980

    Salesguy1980 Rockstar 100 Posts

    My 2003 Envoy has 180,000 on her 4.2 I6 4x4. My wife now drives her doing a lot less driving than i was doing. I replaced the water pump and alternator at about 140K and the whining stopped. Alternator was on the way out and my mechanic advised to change the water pump too. No more whining noise

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