Hello to all,
I have a 96 Chevy Astro V6, AT, AWD.
The front differential drive shaft (from transfer case) was removed a few months ago because it was bad,(vibrating at high speeds) and consequently, it drove fine in 2wd at the time. Now, above 35 MPH it starts a steady hum in the front end. The pitch increases with speed and it seems to level out at cruising speed on the highway.
I have pulled the front diff in an effort to find the problem. Luckily, I must say that the diff it was real easy to pull. It seemed that the backlash on one side was a bit excessive -( I don't know the Specs) and it seems on one side the gears may be rough like they are catching a bit on the edge of teeth. Will this be hard to rebuild? I have never rebuilt a diff or AT before; gearboxes/engines/diesels yes. Based on description would diff be at fault?? CV's and bearings seem okay, no play at all. So now I need info and advice, I can't ID the differential, no tag and the stamped numbers don't match anything. Any help appreciated. Thanks, tink