2006 GMC Sierra whining

2006 GMC SIERRA
65,000 MILES • V8 • 4WD • AUTOMATIC
Avatar
ROBERT MIICKE
  • MEMBER
  • 1 POST
Started a week ago. Whining (tubine sounding) noise coming from behind and below driver. Must be in drive going about 25mph, the faster you go the louder it gets. Whines faster or slower depending on speed. If you rev the engine in park or neutral, no noise.
Jul 11, 2010 at 8:33 PM
Advertisement
Avatar
2CARPRO JACK
  • ✓ASE Certified Mechanic
  • 11,533 POSTS
  • ASE Certified Mechanic
Try rotating the tires to eliminate the possibility of a bad tire causing it.Sounds ilike it could be a u-joint or possibly the rear end the way you describe it, especially if the noise changes when you are off and on the gas.Could also be the trans doing it, the trans case and t-case can act as a speaker (aluminum bodies) causing the noise to sound as if it is coming from farther back in the truck. If you can find a dirt road, try in 4wd to see if it still does it or if the noise changes.
Jul 13, 2010 at 8:00 AM
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.