2020 GMC SIERRA 1500 — Complaint #2178421
Open-data reference.
NHTSA Complaint about ENGINE filed February 19, 2026
NHTSA complaint #2178421 (ODI reference 11719037) concerns a 2020 GMC SIERRA 1500 and was filed on February 19, 2026. The owner reports the failure occurred on November 1, 2024. The report was geocoded to Illinois based on the filer's self-reported location. The affected component is categorized as engine, 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 engine 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
I had a complete engine failure that I had to pay out-of-pocket for I really think that this vehicle shouldâve been included in the 2021 and beyond engine recall for 6.2 GMC Sierraâs. I drove to work one morning Fein after work I turned my vehicle on, and the engine started shaking violently and smoke coming out of my exhaust like Iâve never seen it before dealer said engine was completely blown and had to be repaired again I paid for this out of my own pocket. It is now coming to my attention that this vehicle is being looked at as an engineering analysis in line with the recall for the 2021 in above GMC Sierraâs what do I need to do?
Complaint Details
| NHTSA Complaint ID | 2178421 |
| ODI Number | 11719037 |
| Date Filed | February 19, 2026 |
| Failure Date | November 1, 2024 |
| VIN | 3GTU9DEL6LG |
Similar ENGINE Complaints for 2020 GMC SIERRA 1500
My engine is projecting a ticking sound. Oil consumption is extreme.
Engine failure as related to RQ26-001. engine misfires after following recommended maintenance schedule for 6.2L engine. Vehicle is at dealership and available for inspection and dealer is recommen
Catastrophic engine failure at 62,445 miles. Dealer state excessive oil in cylinder 7, ring failure. Recommendations; remove and replace engine.
I purchased my 2020 gmc sierra 1500 6.2L in September 2024 with 80,000 miles. 9 months later the lifters gave out. Had them replaced and 6 months later, the lifters again were bad and was knocking. Th
The contact owns a 2020 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed and hauling a boat, the vehicle shook violently and made a loud banging sound. The vehicle failed
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.