Print report
August 24: GM Engine Failure Investigation Includes Nearly 1 Million Vehicles investigations | 0 days ago
July 18: GM Class Action Lawsuit Focuses on Radiator Hose Connector news | 37 days ago
July 5: GM Rear Sliding Window Water Leaks Cause Lawsuit news | 50 days ago
June 8: GM Files Motion to Dismiss L87 Engine Lawsuit news | 77 days ago
2026 GMC Sierra 1500
Problems & Complaints
Worst 2026 GMC Sierra 1500 Problems by Category
Stay Up to Date
Compare GMC Sierra 1500 Model Years
Curious how the 2026 Sierra 1500 compares to other years?
Check out our GMC Sierra 1500 overview to see the most problematic years, worst problems and most recently reported complaints with the Sierra 1500.
Worst 2026 GMC Sierra 1500 Problems
-
#1: Catastrophic Engine Failure 2026 Sierra 1500
- Average Cost to Fix:
- N/A
- Average Mileage:
- 3,000 mi
We're actively collecting data on the worst problems for the GMC Sierra 1500.
Please add any complaints you have so we have more helpful data to show!




