There are 7 owner-reported electrical system complaints for the 2014 GMC Sierrain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
THE VEHICLES HEADLIGHTS ARE DANGEROUSLY INEFFECTIVE. THEY RARELY ILLUMINATE THE DISTANCE BETWEEN 2 TELEPHONE POLES. THE INEFFECTIVENESS OF THE HEADLIGHTS IS AMPLIFIED ON HILLS OR ON ANY TURN. THE DURING THE TRANSITION FROM DECLINE TO INCLINE, YOU SOMETIMES HAVE BARELY A TRUCKS LENGTH OF ILLUMINATION. ANY CORNER ON A DARK ROAD REQUIRES A SEVERE DECREASE IN TRAVEL SPEED TO AVOID OVER DRIVING THE LIGHTS. I HAVE NEVER DRIVEN A VEHICLE THAT MADE ME FEEL MORE APPREHENSIVE TO GET BEHIND THE WHEEL AFTER DARK. I VISITED THE DEALER WHO EXECUTED A TSB THAT INCREASED HEADLIGHT VOLTAGE AND REPLACED THE BULBS. IT MADE A NEGLIGIBLE IMPROVEMENT AND LEFT THE VEHICLE STILL UNSAFE AT NIGHT. I FREQUENTLY TRAVEL ON RURAL ROADS WITH NO STREET LIGHTS. I HAVE ALMOST HIT WILDLIFE TOO MANY TIMES TO COUNT DUE TO THE POOR VISIBILITY CAUSED BY THESE DANGEROUS HEADLIGHTS. TRAVEL OVER 30 MPH ON DARK COUNTRY ROADS WITH A LEGAL SPEED LIMIT OF 50 IS ILL ADVISED DUE TO THE INEFFECTIVENESS OF THE HEADLIGHTS.
THE HEADLIGHTS ON THIS TRUCK PROVIDE INADEQUATE LIGHTING, INCLUDING BOTH LOW BEAMS AND HIGH BEAMS. ANY NIGHT DRIVING IS DIFFICULT DUE TO LIMITED VISIBILITY, THERE SIMPLY IS NOT ENOUGH ILLUMINATION TO SEE. CAN BE VERY DANGEROUS - ESPECIALLY AT SPEEDS ABOVE 35 MPH OR DURING PRECIPITATION. THE HEADLIGHT HAS A SEVERE DESIGN FLAW WITH GMS SAYS IS A SHUTTER SYSTEM. THIS TYPE OF DESIGN DOES NOT LEAVE ANY OPTIONS FOR SIMPLY CHANGING THE TYPE OF BULB - THE DESIGN IS ACTUALLY AT FAULT FOR THE POOR VISIBILITY. THE VISIBILITY PROBLEMS SIMPLY CANNOT BE FIXED WITH A DIFFERENT BULB TYPE DUE TO THE SHUTTER DESIGN TYPE. THE NEED FROM A NEW HEADLIGHT WILL SOLVE THE PROBLEM. MANY COMPLAINTS ARE BEING REGISTERED ONLINE RELATED TO THE VISIBILITY PROBLEM. THESE TRUCKS ARE NOT SAFE TO DRIVE AT NIGHT. IF THERE IS A STANDARD FOR MINIMUM HEADLIGHT ILLUMINATION FOR NIGHT TIME DRIVING, THIS MODEL HEADLIGHT NEEDS TO BE REVIEWED IF IT IS MEETING THE MINIMUM STANDARD. NOT SAFE, A DEFINITE PROBLEM THAT NEEDS ATTENTION.
VISIBILITY FROM THE VEHICLES HEADLIGHTS IS VERY POOR. I'M AFRAID TO DRIVE AT NIGHT BECAUSE LIGHTING IS POOR. *TR
WHILE DRIVING ON FIRST SNOW AFTER TRUCK PURCHASE I TRIED THE 4WHEEL DRIVE SYSTEM. WHEN I SWITCHED IT OVER THE MIRRORS WENT DOWN, THE SEAT WENT BACK, AND THE PEDALS CAME UP. THANKFULLY I WAS GOING SLOW AT THE TIME. IT WAS A VERY STRANGE FEELING AND LUCKY THAT MY WIFE WAS NOT DRIVING AT THE TIME.I HAVE AN APPOINTMENT AT THE DEALERSHIP TO HAVE IT LOOKED AT. *TR
HEADLIGHTS ON THIS VEHICLE ARE TERRIBLE. VERY POOR ILLUMINATION FOR NIGHT DRIVING.THERE SHOULD BE A SAFETY RECALL FOR THESE HEADLIGHTS, PICKUP IS DANGEROUS TO DRIVE AT NIGHT.HEADLIGHTS LIGHT UP ROAD ABOUT 50-60 FEET AND OFFER VERY POOR SIDE VISION.HIGH BEAMS ARE USELESS AND SHINE UP IN THE TREES AND NOT ON THE ROAD.VEHICLE HAS PROJECTORS WITH ONLY A FLAPPER TO CHANGE HIGH/LOW BEAM.IHAVE BEEN DRIVING FOR 40 YEARS AND HAVE NEVER DRIVEN A VEHICLE WITH THIS POOR HEADLIGHT DESIGN. I CANNOT BELIEVE HEADLIGHT PASSED PHOTOMETRIC DESIGN CERTIFICATION (MAYBE THEY DID NOT) I HAVE COMPLAINED TO GMC BUT THEY SAY HEADLIGHTS ARE WORKING AS DESIGNED. HEADLIGHT ASSEMBLIES WERE REPLACED ONCE AND ADJUSTED SEVERAL TIMES BY DEALER.STILL NO REMEDY TO THE PROBLEM. *TR
THE LIGHTS ON THIS VEHICLE ARE UNSAFE IN THAT THEY ONLY PROJECT FOR A SHORT DISTANCE AND DON'T ALLOW ANY LIGHT TO THE SIDES ON CORNERS OR ON UPSLOPES OF HIGHWAY DIPS. *TR
2014 GMC SIERRA. CONSUMER WRITES IN REGARDS TO VEHICLE ELECTRICAL PANEL FROZE WHILE DRIVING. *SMD ALSO, THE POWER STEERING LOCKED UP, THE HEADLIGHTS DID NOT WORK PROPERLY AND THE ALARM SOMETIMES SOUNDED AFTER THE WAS REMOVED FROM THE IGNITION. ALSO, THE ENGINE LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO THE DEALER TWICE. HOWEVER, THE PROBLEM WAS STILL NOT RESOLVED. THERE WAS A HESITATION/LURCH COMING FROM THE TRANSMISSION, AND AN ISSUE WITH THE TIRE PRESSURE MONITORING SYSTEM. THE INSTRUMENT PANEL MALFUNCTIONED ON THE WAY BACK FROM THE DEALER. THE CHECK ENGINE LIGHT, ILLUMINATED SPORADICALLY. UPDATED 07/10/14 THE CONSUMER STATED THERE WAS A STEERING ISSUE, AS WELL. THE DEALER WAS UNABLE TO REPLICATE THE PROBLEMS. UPDATED 08/06/14
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026