1998 Chevrolet Silverado 1500

DISPLEASED WITH AUTO TRANSMISSION, PROBLEM #1, WHEN THE TRANSMISSION SHIFTS FROM 2ND INTO 3RD GEAR IT WILL SHIFT WITH A VERY UNEASY NOISE ( LIKE THE TRANSMISSION HAS A PROBLEM SHIFTING INTO 3RD, THIS WILL NOT HAPPEN ALL THE TIME AND THE TRUCK CAN BE COLD OR AT NORMAL RUNNING TEMPERTURE FOR THE TRANSMISSION TO SHIFT UNEASY. THE DEALER THIS PROBLEM HAS BEEN ON GOING FOR YEARS AND THEIR ARE TRYING TO COME UP WITH A QUICK FIX TO FIX THIS ISSUE WITHOUT HAVING TO REPLACE MY TRANSMISSION, THEY DID TELL ME THAT GM HAS ALREADY REPLACE AND REBUILT ALOT OF TRANSMISSION IN THE UNITED STATES FOR THIS PROBLEM. I HAVE BEEN TOLD BY THE SALES REP. THAT SOLD ME THE TRUCK THAT HE HAS A FLYER FROM GM WITH A STATMENT JUST TO THE DEALER'S ABOUT THIS PROBLEM. PROBLEM #2 WHILE DRIVING THE TRUCK BETWEEN 41 TO 45 MPH THE TRUCK WILL SHAKE CAUSE FROM THE TRANSMISSION AND ENGINE NOT WORKING TOGETHER, I WENT TO MY LOCAL CHEVROLET DEALER AND HAD THERE SERVICE GARAGE DRIVE THE TRUCK AND HE SAID THIS WAS CAUSE FROM THE ENGINE RUNNING A 1000 RPM WHILE DRIVING BETWEEN 41 TO 45 MPH AND IF I DIDN'T LIKE THE SHAKING OF THE TRUCK, TO DRIVE IT IN 3RD GEAR AND NOT OVERDRIVE SO TO ALLOW THE ENGINE TO RUN AT A HIGHER RPM. I PAID ALMOST $30,000.00 FOR THIS TRUCK, I FEEL AS IF I BEEN BURNT GM AND THE TERM "LET A ROCK" MEANS LET A ROCK LIKE "NOGO"