Two problems related to transmission noise have been reported for the 2000 GMC Sierra. The most recently reported issues are listed below.
Consumer was traveling about 15mph on highway and heard a noise when automatic transmission changed from first to second gear. Also, there was vibration when she turned left to right. Dealership was aware of problem.
While changing gears consumer heard clunking noise. Dealer replaced transmission, but, problem returned dealer has been notified. Please provide further information.