Two problems related to battery dead have been reported for the 2020 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2020 GMC Sierra 1500 based on all problems reported for the 2020 Sierra 1500.
On two separate occasions, the truck has been dead when attempting to crank. There were no lights or devices left on after the previous time the truck had been used. Something is drawing power from the battery causing it to be dead. After recharging the battery, the check engine codes read that there is a problem with �brake light illumination. � help in determining wha t is causing the battery to die on such a new vehicle would greatly appreciated! I'm uncertain at this time as to whether or not the brake light illumination is causing a safety hazard.
Battery was dead in the garage. Called road side assistance who jump-started car. Car would not go into gear. We rolled it out into driveway where it sat for 24 hours. When it was loaded for travel to dealership, it cranked and was driven up on wrecker trailer like it had no apparent problems. Was carried to dealership where they recharged and checked the battery and reset 14 different codes which were lost with the low voltage.
| Electrical System problems | |
| Car Will Not Start problems | |
| Battery Dead problems | |
| Adas Blindspot Sensors problems | |
| Wiring problems |