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...
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Warning to all those who repair pump rub themselves. DO NOT use too much silicone on the case halves. Silicone debris plugged my pump filter causing it to fail. I was lucky ! The shop found a couple other parts with wear and the bill is 384.00 plus I have to buy another new driveshaft yoke for 120.00 as well as put the t case back in the truck. Very costly learning experience, but it could have been worse.
