One problem related to transmission failure has been reported for the 2014 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2014 GMC Sierra 1500 based on all problems reported for the 2014 Sierra 1500.
Automatic transmission totally failed while entering unto interstate highway. Was able to pull off highway onto exit ramp partially blocking ramp until wrecker arrived. Required complete rebuild.