Silverado Whining above 40 mph (UPDATE)
I have been chasing a whine in my truck for about 7,000 miles now on my 03 Chevy 2500HD with no luck. When driving the truck above 40 mph it is there is a whine that sounds similar to the pinion beari...
Forum Discussion
You should use a synthetic lube like Amsoil Torque Drive and over fill the transfer case by 1 quart. To overfill remove the switch in the top of the case and add the lube there.
