99 silverado. Pretty sure my 1-2 solenoid is dead. Or at least clogged. I got a p0751 code yesterday and my truck revs way up when i first start driving and then it will finall shift into 3rd. At slower speeds I can feel the truck shimmying back and forth and I can also hear knocking from somewhere. Doesn't look good . Any decent shops around the Greendale area that are also good with transmissions. I just don't have the time or the knowledge to try to tackle this myself.