trans

Good morning everyone, simply put I'm pretty well at a loss on this one. I have a 2007 GMC Sierra Classic SL Work Truck package with a 4.8L V8, automatic 2WD at roughly 116.5k miles. Here's my issue: From a cold stop, as accelerating, there's a higher pitched whining (more like a winding up...

2011 Sierra All Terrain that is having a continued issue with a driveline shudder vibration sensation only after I let off the gas to coast and upon light acceleration I feel and hear a vibration for about 1-2 seconds. The best example would be "In Town" driving around 20-30 mph (but not limited...

I have a 2000 Sonoma with 77,000 miles on it. If I drive it for more than 30 minutes it starts shifting hard. If I turn off the engine and restart, it shifts fine for awhile. Any ideas on what's causing this? Thanks