2020 GMC SIERRA 1500 — Complaint #1967480
Open-data reference.
NHTSA Complaint about VISIBILITY:GLASS, SIDE/REAR:CRITICAL FASTENERS filed February 14, 2024
NHTSA complaint #1967480 (ODI reference 11571977) concerns a 2020 GMC SIERRA 1500 and was filed on February 14, 2024. The owner reports the failure occurred on September 18, 2023. The vehicle had 31,000 miles on the odometer at the time of the incident. The report was geocoded to Massachusetts based on the filer's self-reported location. The affected component is categorized as visibility:glass, side/rear:critical fasteners, one of NHTSA's standardized taxonomy codes used to group defect patterns across make, model, and year.
The filer flagged the following severity indicators: crash: no, fire: no, injuries: 0, fatalities: 0. No crash, fire, or fatality was associated with this report, which places it in the early-warning stream rather than the priority-review stream. Because a VIN was supplied, this complaint is tied to a specific vehicle and not just a model-year cohort.
Individual complaints are consumer-submitted and unverified by NHTSA engineers — the agency's role at this stage is to collect, index, and make them searchable. What matters for federal action is the pattern: when many owners of the same GMC SIERRA 1500 cohort independently describe similar visibility:glass, side/rear:critical fasteners failures, defect investigators have grounds to open a PE and request manufacturer data. Related filings for the same vehicle and component appear below, and the detail page for the full 2020 GMC SIERRA 1500 shows the complete component-level complaint distribution alongside any active investigations or recalls.
Complaint Description
The contact owns a 2020 GMC Sierra 1500. The contact stated while detailing the rear interior of the vehicle, the contact discovered water surrounding the rear windshield casing and the water was leaking into the rear seating. Additionally, the rear carpet was soiled with water. The contact used towels while attempting to soak up the water. The vehicle was taken to the dealer where it was diagnosed that the failure was due to the failed rear windshield glass fasteners. The contact was informed that the failure had damaged the rear carpet, padding, and the rear seat. In addition, the contact was informed that the carpet and padding needed to be replaced due to mold build up. The contact was informed that the vehicle was out of warranty coverage. The vehicle was not repaired. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 31,000.
Complaint Details
| NHTSA Complaint ID | 1967480 |
| ODI Number | 11571977 |
| Date Filed | February 14, 2024 |
| Failure Date | September 18, 2023 |
| VIN | 1GTU9FEL2LZ |
Source: NHTSA Vehicle Complaints Database. Component taxonomy and severity codes are standardized by NHTSA Office of Defects Investigation.
Read our methodology — how this data is sourced, computed, and verified.