Last updated: 2026-05-15
GMC Sierra 1500 vs Ram Promaster: Reliability Compared
GMC Sierra 1500
Ram Promaster
Choosing between the GMC Sierra 1500 and the Ram Promaster? This page compares their reliability scores, NHTSA recall history, owner-reported complaints, and estimated annual repair costs so you can make a confident long-term ownership decision between these two full-size trucks.
Our reliability scores are based on NHTSA recall and complaint data, independent repair cost estimates, and sales-normalized complaint rates. The GMC Sierra 1500 currently leads with an average score of 67/100 compared to 62/100. Scroll down for the full year-by-year breakdown, common problem areas, and repair cost comparison.
How Do the GMC Sierra 1500 and Ram Promaster Generations Compare?
Verdict
The GMC Sierra 1500 is more reliable than the Ram Promaster, scoring 67/100 vs 62/100.
The GMC Sierra 1500 and the Ram Promaster both present reliability concerns, each with distinct issues. The Sierra 1500 has a slightly higher reliability score of 67/100 compared to the Promaster's 62/100, but it also has more recalls, totaling 42 over nine years. However, the Sierra 1500 has a higher owner complaint rate at 15.4 per 10,000 sold, whereas the Promaster reports 4.6 complaints per 10,000. Despite a slightly better reliability score, the Sierra's higher complaint rate and significant recall history suggest the Promaster may be the more reliable choice, especially for those prioritizing fewer owner issues.
Key Differences
- 1GMC Sierra 1500 has 12 fewer total recalls
- 2Ram Promaster has 10.8 fewer complaints per 10k sold
- 3GMC Sierra 1500 scores 5 points higher in reliability
Category Scoreboard
GMC Sierra 1500 vs Ram Promaster: Which Is More Reliable?
| Metric | GMC Sierra 1500 | Ram Promaster |
|---|---|---|
| Reliability Score | 67/100 | 62/100 |
| Years Tracked | 9 | 9 |
| Total Recalls | 42 | 54 |
| Complaints per 10k Sold | 15.4 | 4.6 |
| Year Wins | 7 | 1 |
What Are the Common Problems With the GMC Sierra 1500 and Ram Promaster?
The GMC Sierra 1500 exhibits a higher total number of complaints compared to the Ram Promaster, with significant issues in the engine and power train categories, including 764 and 565 complaints respectively, some of which are crash-linked. The Sierra also shows notable concerns in its electrical system and service brakes, with the latter having a relatively high number of crash-linked complaints (8). In contrast, the Ram Promaster's most reported issues are in the electrical system and steering, though these categories have fewer complaints overall. The Promaster has a much lower incidence of crash-linked complaints, particularly in the engine and power train categories, suggesting less severe safety concerns compared to the Sierra.
| Component | GMC Sierra 1500 | Ram Promaster |
|---|---|---|
| ENGINE | 4.5Average | 0.2Very Low |
| POWER TRAIN | 3.3Average | 0.5Very Low |
| ELECTRICAL SYSTEM | 1.8Low | 0.6Very Low |
| STEERING | 0.9Very Low | 0.5Very Low |
| ENGINE AND ENGINE COOLING | 0.8Very Low | 0.4Very Low |
| UNKNOWN OR OTHER | 0.7Very Low | 0.5Very Low |
| SERVICE BRAKES | 0.8Very Low | 0.3Very Low |
| STRUCTURE | 0.8Very Low | 0.1Very Low |
| VEHICLE SPEED CONTROL | 0.1Very Low | 0.1Very Low |
| AIR BAGS | 0.1Very Low | —None |
| SUSPENSION | 0.1Very Low | —None |
| FUEL/PROPULSION SYSTEM | 0.1Very Low | —None |
| EXTERIOR LIGHTING | 0.1Very Low | —None |
| FORWARD COLLISION AVOIDANCE | —None | 0.1Very Low |
| LANE DEPARTURE | —None | 0.1Very Low |
| BACK OVER PREVENTION | —None | 0.1Very Low |
| SEAT BELTS | —None | 0.1Very Low |
| VISIBILITY/WIPER | —None | —None |
| EQUIPMENT | —None | —None |
Complaints per 10,000 units sold, aggregated across all tracked model years from NHTSA owner reports.
How Does GMC Sierra 1500 vs Ram Promaster Reliability Compare by Year?
| Year | GMC Sierra 1500 | Ram Promaster | Edge |
|---|---|---|---|
| 2025 | 80/1001R / 56C | 62/1004R / 3C | GMC Sierra 1500 |
| 2024 | 73/1001R / 242C | 62/1006R / 5C | GMC Sierra 1500 |
| 2023 | 69/1003R / 318C | 63/1007R / 39C | GMC Sierra 1500 |
| 2022 | 65/1005R / 439C | 61/1008R / 53C | GMC Sierra 1500 |
| 2021 | 63/1006R / 420C | 58/10011R / 98C | GMC Sierra 1500 |
| 2020 | 63/10011R / 368C | 62/1007R / 34C | GMC Sierra 1500 |
| 2019 | 60/10010R / 523C | 58/10010R / 60C | GMC Sierra 1500 |
| 2018 | 66/1005R / 281C | 68/1000R / 1C | Ram Promaster |
| 2026(predicted) | 68/100(predicted) | 62/100(predicted) | GMC Sierra 1500 |
Best years to cross-shop: The 2025 GMC Sierra 1500 scored 80/100 and the 2018 Ram Promaster scored 68/100 — these represent the strongest model years in our tracking range.
Who Should Buy the GMC Sierra 1500 vs the Ram Promaster?
GMC Sierra 1500 vs Ram Promaster: Common Questions
- Is the GMC Sierra 1500 more reliable than the Ram Promaster?
- Based on our data, the GMC Sierra 1500 is more reliable with an average score of 67/100 compared to 62/100. The difference is modest, so both are reasonable choices.
- Which has more recalls, the GMC Sierra 1500 or the Ram Promaster?
- The Ram Promaster has more recalls (54) compared to the GMC Sierra 1500 (42). More recalls don't always mean worse reliability — some are minor — but it's worth reviewing what each recall covers.
- Which has fewer owner complaints, the GMC Sierra 1500 or the Ram Promaster?
- Adjusted for sales volume, the Ram Promaster has a lower complaint rate at 4.6 per 10,000 vehicles sold versus 15.4 for the GMC Sierra 1500. Normalizing by sales gives a fairer comparison than raw totals.
Related Reliability Comparisons
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Decided between GMC Sierra 1500 and Ram Promaster? Run a VIN check before you buy — uncover hidden accidents, title issues, and open recalls.
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How We Calculate Reliability Scores
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.
Key Ranking Factors
Complaint Severity
NHTSA owner complaints weighted by component category (e.g., powertrain, safety systems, electronics, cosmetic) — safety-critical issues carry more weight than cosmetic ones. Adjusted for sales volume so high-volume models aren't unfairly penalized.
Repair Costs
Independent reliability ratings based on repair frequency, average repair costs, and severity of typical repairs for each model.
Recall Impact
Number of NHTSA recalls weighted by severity. “Stop driving” and fire-risk recalls are penalized more heavily than minor software or labeling recalls.
Issue Diversity
Measures how many major vehicle systems (engine, transmission, electrical, braking, etc.) have recorded complaints. A vehicle with issues spread across many systems may indicate systemic quality issues.
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.
See incorrect data? Report an issue