2020 GMC Sierra 1500 Exterior lighting Problems
- Complaints
- 3about this part
- Share
- 1%of 484 total for the year
- Median mileage
- 1,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the exterior lighting of the 2020 GMC Sierra 1500, 1% of the 484 complaints for this model year. Where a mileage was given, the median is 1,500 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Brand new truck. Stuck at the gym in the middle of the night truck wont start. The interior lights, head lights, and radio wont shut off. Vehicle wont start. I'm assuming the battery was drained because interior lights, exterior lights, radio, wont shut off. Has to be some kind of electrical malfunction. Waiting on GM roadside.”
NHTSA complaint #11308116, filed 2020-02, 144 miles“When making right turns in the dark the headlights do not cast light to the right so you can see where you are turning. This is especially a problem in the rural without streetlights it is totally black from the drivers seat looking over the right side of the hood or out the right window.”
NHTSA complaint #11289110, filed 2019-12, 1,500 miles“Dangerous visibility hazard when backing up vehicle at night. Infotainment screen switches to full brightness when backup camera is activated, resulting in blinding light to driver. Driver can not backup safely without physically covering the screen to regain visibility. Screen brightness reflects off all 4 windows, windshield and back glass. Side mirrors are unusable in this condition. There was a fix for this issue on previous GM models, (prior to 2018), however no fix for 2019 - present”
NHTSA complaint #11397727, filed 2021-02, 20,000 milesRelated service bulletins
- 11026022Jun 2, 2025This service bulletin provides technicians with information on available BCM calibrations to restore bulb outage detection on vehicles produced by a second stage manufacturer…
- 11019325Apr 15, 2025This informational bulletin provides information on the turn signal stalk not cancelling and/or mis cancelling.
- 11017243Mar 25, 2025This service bulletin provides technicians with information on available BCM calibrations to restore bulb outage detection on vehicles produced by a second stage manufacturer…
- 11014170Jan 27, 2025This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines.
Exterior lighting: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2025 | 3 | 2% |
| 2024 | 15 | 4% |
| 2023 | 11 | 2% |
| 2022 | 1 | 0% |
| 2021 | 2 | 0% |
| 2020 | 3 | 1% |
| 2019 | 11 | 2% |
| 2018 | 3 | 1% |
| 2017 | 9 | 3% |
| 2016 | 4 | 1% |
| 2015 | 93 | 13% |
| 2014 | 148 | 20% |
| 2013 | 3 | 3% |
| 2011 | 5 | 2% |
| 2010 | 2 | 1% |
| 2009 | 3 | 1% |
| 2008 | 2 | 1% |
| 2007 | 2 | 1% |
| 2006 | 5 | 3% |
| 2005 | 4 | 2% |
| 2004 | 3 | 1% |
| 2003 | 2 | 1% |
| 2002 | 3 | 2% |
| 1998 | 1 | 2% |
| 1997 | 1 | 1% |
Other parts of the 2020 GMC Sierra 1500
245 complaintsTransmission and drivetrain
99 complaintsElectrical system
81 complaintsBrakes
55 complaintsOther or unknown
46 complaintsSteering
38 complaintsFuel system
27 complaintsEngine cooling
21 complaintsSuspension
18 complaintsVisibility (wipers, defrost, mirrors)
15 complaintsForward collision avoidance
14 complaintsBody and structure
13 complaints
← All problems reported for the 2020 GMC Sierra 1500
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology