Results are for year ending June 30, 2018. Only successfully completed repairs are currently included in the analysis. Routine maintenance, most wear items, recalls, and problems fixed with just a reflash or warning light reset are not included.
2016 GMC Sierra (not HD)GMCSierra (not HD)20161101.4285714285714neutral reliability: 32 Sierra (not HD)s, 10.0 months of data per Sierra (not HD), average 21600 miles32
32 Sierra (not HD)s, 10.0 months of data per Sierra (not HD), average 21600 miles
2015 GMC Sierra (not HD)GMCSierra (not HD)20151100.64285714285714excellent reliability: 62 Sierra (not HD)s, 9.6 months of data per Sierra (not HD), average 35000 miles62
62 Sierra (not HD)s, 9.6 months of data per Sierra (not HD), average 35000 miles
2014 GMC Sierra (not HD)GMCSierra (not HD)20141101.6neutral reliability: 47 Sierra (not HD)s, 10.7 months of data per Sierra (not HD), average 52800 miles
You won't find GMC Sierra 1500 reliability information like this anywhere else. Actual repair frequencies, not just vague dots. So you can tell how much the GMC Sierra 1500 truly differs from competing car models in reliability.
These stats have been promptly updated four times a year, to much more closely track GMC Sierra 1500 reliability as the cars age. Others tell you how reliable the GMC Sierra 1500 was a year ago, when the cars were a year younger and had 12,000 fewer miles on them. Only TrueDelta tells you how reliable the GMC Sierra 1500 has been recently.