3rd Generation (2014—2019) Sierra 3500 Problems

This generations ranks 7th out of 33 GMC generations in reliability and is one of the safer bets out there. Owners have the most complaints about the lights (62%), exterior (12%), and the electrical (12%). We've listed some of the most recent complaints below, see them all on CarComplaints.com.

  1. Poor Visibility 4 complaints at an average of 27,814 miles in the 2015 GMC Sierra 3500.
  2. Fuel Transfer Unit 1 complaints at an average of 2,700 miles in the 2014 GMC Sierra 3500.
  3. Headlights Flicker on Every Little Bump 1 complaints at an average of 100 miles in the 2017 GMC Sierra 3500.

What Sierra 3500 Year is Most Reliable?

Generations are a good baseline for prediciting reliability, but there will almost always be year-to-year differences. We've calculated a reliability score for each model year within this generation, but we've based that score on how the model year compares to all GMC model years.

Watch out for the 2015 model year which has the highest PainRank™ score in this generation.

Year Complaints Recalls TSBs PainRank (?)
2019 0 0 0 0.0
2018 0 0 196 0.0
2017 1 2 106 0.46
2016 0 4 178 0.0
2015 6 5 283 1.38
2014 1 2 252 0.61

Watch out for these common problems

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