2004 Chevy Trailblazer four wheel drive noise

Tiny
GLENN MCKENZIE
  • MEMBER
  • 2004 CHEVROLET TRAILBLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 72,000 MILES
Happy New Year. I have a 2004 Chevy Trailblazer and when I shift into 4WD I get a whining noise at about 30mph. I just purchased this vehicle from a used car dealer. Any help would be appreciated. Thank you, Glenn
Saturday, January 2nd, 2010 AT 9:07 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Glen:
To some extent, it is normal to hear a different sound from the gears because there are different one engaging. Is the noise excessice or are there changes in the vehicle other than the sound?
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Sunday, January 3rd, 2010 AT 3:06 PM

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