There are 3 owner-reported electrical system complaints for the 2013 GMC Sierrain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
VEHICLE'S VOLT GAUGE READ'S BETWEEN 16 AND 17 VOLT'S. CONSTANTLY. TAKEN TO DEALER AND WAS TOLD AFTER THERE TESTING OF THE SYSTEM ALL READING WERE AT 14.4 TO 14.7 VOLTS. THEY COULD NOT DUPLICATE PROBLEM. WHEN LEAVING DEALERSHIP WAITED AFTER STARTING TO WATCH GAUGE AS DRIVING DOWN THE HIGHWAY. GAUGE STILL READING BETWEEN 16 AND 17 VOLTS. HAVE NOW CONTACTED GMC CUSTOMER SERVICE FOR FURTHER HELP. *TR
TL* THE CONTACT OWNS A 2013 GMC SIERRA. THE CONTACT STATED THAT WHILE REVERSING, THE PARK ASSIST LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSIS BUT THEY WERE UNABLE TO DUPLICATE THE PROBLEM. THE MANUFACTURER WAS NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 5,000. UPDATED 9/17/13*CN
TL* THE CONTACT OWNS A 2013 GMC SIERRA 3500. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 5 MPH, THE BRAKE PEDAL WAS DEPRESSED AND THE CONTACT HEARD A LOUD SLOSHING NOISE OF FUEL COMING FROM THE FUEL TANK. IMMEDIATELY WHEN THE SOUND EMITTED A VIOLENT AND FORCEFUL MOVEMENT FROM THE EXTERIOR REAR OF THE VEHICLE OCCURRED. THE CONTACT CONTINUED TO DRIVE. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHICH INFORMED THE CONTACT THAT THE VEHICLE OPERATED NORMALLY. IN ADDITION, THE INSTRUMENT CLUSTER AND RADIO WOULD NOT DIM IN THE NIGHT MODE. THE MANUFACTURER WAS NOTIFIED OF THE PROBLEM. THE APPROXIMATE FAILURE MILEAGE WAS 150. UPDATED 01/22/13*LJ THE CONSUMER ALSO STATED GM HAS A SERVICE BULLETIN OUT ON THE CONDITION THAT HAS EXISTED SINCE THE 2007 MODEL YEAR. THERE IS ALSO A NIGHT TIME LIGHTING ISSUE WITH THE INABILITY TO DIM FURTHER, THE DASH LIGHTS OR TO TURN THEM OFF COMPLETELY. UPDATED 01/24/13
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