One problem related to service engine light on has been reported for the 2014 GMC Terrain. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2014 GMC Terrain based on all problems reported for the 2014 Terrain.
Wife was driving her vehicle, all service engine lights displayed, car DE-accelerated and was able to limp into a business on a 45 mph road. Took car to dealership, all service engine lights were on display, service technician acknowledged this. Cannot duplicate problem, no problem found in diagnostic testing.