2026 GMC Sierra 1500 Engine Problems
Owners have filed 97 complaints with NHTSA about engine problems on the 2026 GMC Sierra 1500, 68% of all complaints for this model year. Half of the reports with a mileage happened before 5,509 miles. The words owners use most often: “l87 engine” (8% of reports).
- 97engine complaints
- 5,509median miles at failure
- 1mention a crash
- 0mention an injury
- 0related recalls
- 44%of reports with a speed happened at 50+ mph
What owners describe
Phrases that appear unusually often in these complaints compared with complaints about other cars.
- L87 engine: mentioned in 8 of 97 complaints (8%)
- Off road: mentioned in 8 of 97 complaints (8%)
- Loss propulsion: mentioned in 6 of 97 complaints (6%)
- Able pull: mentioned in 6 of 97 complaints (6%)
At what mileage do engine problems happen?
Based on 8 complaints that reported the odometer reading.
How serious are the reports?
Of 97 complaints, 1 mention a crash.
GMC Sierra 1500 engine complaints by model year
| Model year | Engine complaints | Share of that year | Median miles |
|---|---|---|---|
| 2026 Sierra 1500 | 97 | 68% | 5,509 |
| 2025 Sierra 1500 | 54 | 45% | 25,819 |
| 2024 Sierra 1500 | 188 | 51% | 25,000 |
| 2023 Sierra 1500 | 209 | 43% | 17,500 |
| 2022 Sierra 1500 | 238 | 40% | 60,800 |
| 2021 Sierra 1500 | 316 | 54% | 58,522 |
| 2020 Sierra 1500 | 240 | 50% | 44,000 |
| 2019 Sierra 1500 | 309 | 47% | 74,000 |
| 2018 Sierra 1500 | 67 | 22% | 47,000 |
| 2017 Sierra 1500 | 58 | 16% | 56,000 |
| 2016 Sierra 1500 | 39 | 11% | 73,760 |
| 2015 Sierra 1500 | 84 | 12% | 57,000 |
| 2014 Sierra 1500 | 69 | 9% | 58,500 |
| 2013 Sierra 1500 | 8 | 7% | 151,500 |
| 2012 Sierra 1500 | 6 | 6% | 126,000 |
| 2011 Sierra 1500 | 16 | 6% | 40,688 |
| 2010 Sierra 1500 | 11 | 7% | 67,500 |
| 2009 Sierra 1500 | 13 | 6% | 83,500 |
| 2008 Sierra 1500 | 19 | 5% | 109,000 |
| 2007 Sierra 1500 | 19 | 7% | 87,000 |
| 2006 Sierra 1500 | 5 | 3% | 143,000 |
| 2005 Sierra 1500 | 6 | 3% | 123,500 |
| 2004 Sierra 1500 | 5 | 2% | 96,494 |
| 2003 Sierra 1500 | 3 | 2% | 150,000 |
| 2001 Sierra 1500 | 2 | 1% | 174,900 |
| 2000 Sierra 1500 | 1 | 1% | 270,000 |
| 1999 Sierra 1500 | 1 | 1% | 677 |
When owners reported it
Related recalls (0)
No safety recall lists engine for the 2026 GMC Sierra 1500. A pattern of complaints does not always lead to a recall.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
On 10/15/2026 I was making a slow right-hand turn up a slight incline into a parking lot when the vehicle braked very hard and the transmission made a grinding noise. I looked at the dashboard, and it was showing that the truck shifted into park while I was driving. The electronic brake engaged as…
I was approaching an intersection about to make a left turn as the turn signal was flashing yellow and my truck just stopped accelerating. If i had taken that turn i would have got hit and most likely cause a huge pile up because the amount of traffic going through. I put my hazard lights on and…
5/08/2026: I stopped outside my garage. I then placed the truck in park and exited the vehicle while running. I went inside my garage and several minutes later, heard a crash. The truck had driven forward while unattended, and crashed into the corner of my garage, causing damage to both the…
Frequently asked questions
Do all 2026 GMC Sierra 1500s have engine problems?
No. NHTSA has 97 owner complaints about engine for the 2026 GMC Sierra 1500 (68% of the 142 complaints for this model year). Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the 2026 GMC Sierra 1500 engine?
No recall currently lists engine for this vehicle.
At what mileage do engine problems start?
The median reported mileage is 5,509 miles: half of the reports with a mileage came before that.
What do owners say about engine problems on the 2026 GMC Sierra 1500?
The most frequent phrase is “l87 engine”, in 8 of 97 complaints, followed by “off road” (8).
See all 2026 GMC Sierra 1500 problems or engine problems across all Sierra 1500 years.