general problems of the 2004 Chevrolet Silverado 1500

Vehicle speeds up, surges, then starts to buck and you get transmission lash. It happens at road and highway speeds of 45 or 55 mph, and can/does happen in od or in 3rd gear. (automatic transmission). I have had a third party "scan" the system, and I get "no" codes. Check engine light does "not" come on. I am able to replicate the issue at will. The vehicle is a 2004 k1500 with 46,500 miles. Its primary use since I purchased this vehicle new is to tow a 19 foot mastercraft from April to November. Maintenance is performed by the manufactures' recommended guidelines. Orginal tires, air and oil filters have been changed as needed. No aftermarket devices installed. I have had a couple of verbal encounters with chevy dealer service department. They seem to be clueless. But are willing to troubleshoot at my expense, plus costs of all parts and service hours. This could $1000. 00 or more. . . . Very frustrating. This is a hazard, accident waiting to happen. I have seen several similiar issues on the internet blog sites, with no concrete answers. Gm is scamming the public, and the gm service departments are passing the costs to the consumers. There should be a recall and a fix for this issue.

Fuel gauge failure. Dashboard needle gauge sitting at the 5 o'clock position and not responsive. Have not taken it in for repair yet. Just happened. This is the second gm truck I've owned where the fuel gauge has broken. The other was a '97 jimmy.