Mesa
FIRST STARTING THE CHEV TRUCK, ROUGH IDLE, TACK JUMPS AROUND 0 TO 1200 UNTIL GET INTO 2ND AND WARMED UP. SHIFTS GOOD AND SMOOTH, BUT UNTIL IT WARMS UP NOT GOOD. MY CONCERN TAKING IT BACK TO NORTHERN CALIF COLD MORNING, WHAT THEN? I'LL DRIVE THE TRUCK FOR SEVERAL DAYS WANT TO CHECK THE GAS MILEAGE; WILL GET BACK TO YOU. I WANT TO DRIVE IT UNDER LOAD ALSO. ONCE IT GETS WARMED UP IT RUNS WONDERFUL! THANKS STEVE REALLY APPRECIATE YOUR HELP AND INTEREST.