2003 Chevy Avalanche 4 wheel drive whining

2003 CHEVROLET AVALANCHE
40,000 MILES • V8 • 4WD • AUTOMATIC
Avatar
MLULAY
  • MEMBER
  • 1 POST
my 4wd has developed some sort of whining problem. ive changed out the gear oil and found no signs of wear or burning. as soon as the 4wd is turned off it disappears. all the driveline coponents are intact and in good working order.

please help!
Dec 10, 2009 at 6:50 PM
Advertisement
Avatar
SCOTTY DEE
  • ✓ASE Certified Mechanic
  • 592 POSTS
  • ASE Certified Mechanic
Did you use 75W-90 synthetic gear oil?
Jan 26, 2010 at 12:29 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.