GMC Sierra 1500 Reliability by Year

The GMC Sierra 1500, covering model years 2018 through 2026, holds an average reliability score of 83/100, indicating an overall excellent reliability reputation. Data shows that while earlier models like 2019 and 2020 faced issues primarily with engines and power trains, leading to higher complaint rates and recalls, more recent models such as 2025 and 2026 exhibit significant improvements with minimal complaints and no recalls. This vehicle is best suited for buyers prioritizing reliability, particularly those considering newer models, as they demonstrate fewer reported issues and higher satisfaction scores.

Current generation: 5th gen (2019–present).

Auto Reliability Index scores are calculated on a 0–100 scale using a weighted formula that combines multiple public data sources. Each factor is weighted based on its predictive value for real-world ownership experience.

Scores are grouped into four tiers:

• 80–100: Excellent — Top-tier reliability, minimal issues
• 60–79: Good — Reliable with some minor concerns
• 40–59: Mixed — Notable issues, research before buying
• 0–39: Risky — Significant problems, proceed with caution

Data is sourced from NHTSA recall records, owner complaint filings, and independent repair databases. Scores are recalculated as new data becomes available. While the weighting model is proprietary, all underlying data sources are public and traceable.