Is the GMC Sierra 1500 more reliable than the Ram Promaster?

Yes, the Sierra has a clear edge, though both stand as good. It has fewer recalls across nine model years. The Promaster has fewer owner complaints per vehicle sold, but many of them concern recall repairs that were stuck waiting for parts.

Which has more recalls, the Sierra 1500 or the Promaster?

The Promaster has more. Federal recall records show 54 across nine model years, against 42 for the Sierra. Owner filings on the Promaster often mention engine cooling and transmission recall repairs where dealers said parts were not available.

Which model has more owner complaints?

The Sierra, by a wide margin. It has 2,647 complaints, or 15.4 per 10,000 sold. The Promaster has 294, or 4.6 per 10,000 sold. The Sierra's biggest pile is engine complaints, led by 6.2L V8 seizures.

What is the biggest problem with the Sierra 1500?

The 6.2L V8 can seize without warning, often at highway speed, and the truck loses power and will not restart. Most failures came between about 15,000 and 36,199 miles. Some engines failed after the recall remedy, and replacements are often back-ordered.

Which Promaster years should I avoid?

Avoid 2019 and 2021, the weakest years. The 2018 model is among the strongest. Common complaints include sudden electrical shutoffs while driving, transmission thumps, and power steering cutting out. Confirm all recall work is finished before you buy.

Last updated: 2026-10-10

GMC Sierra 1500 vs Ram ProMaster: Reliability Compared

More Reliable

GMC Sierra 1500

Good

Ram ProMaster

Good

A used GMC Sierra 1500 comes out ahead of the Ram Promaster on reliability, with a clear edge, though both stand as good. The Promaster has more recalls, and many owners wait on unavailable recall parts.

How Do the GMC Sierra 1500 and Ram ProMaster Generations Compare?

The Sierra is in its 5th generation, which began with the 2019 model year. That generation includes both of its weakest years, 2019 and 2020, so early trucks deserve the closest checks. Its strongest years, 2025 and 2026, are recent and have had less time to collect complaints. A 2018 Sierra is a 4th generation truck. The Promaster's first generation ran from 2013 to 2022 and received a facelift for 2019. The second generation began with the 2023 model year. Most used Promasters you will see are first generation, and its weakest years were 2019 and 2021.

Verdict

The GMC Sierra 1500 is more reliable than the Ram ProMaster, scoring 69/100 vs 62/100.

Reliability favors the Sierra 1500 by a clear margin, but it is not a clean win. Federal recall records show fewer recalls for the Sierra across the same nine model years, and many Promaster complaints are about recall repairs that dealers cannot finish for lack of parts. Against that, the Sierra draws far more owner complaints per vehicle sold, and its 6.2L V8 failures are severe. The Promaster looks quieter in complaints, but its open repairs and long waits hold it back.

Key Differences

1GMC Sierra 1500 has 12 fewer total recalls
2Ram ProMaster has 10.8 fewer complaints per 10k sold
3GMC Sierra 1500 scores 7 points higher in reliability

Category Scoreboard

2GMC Sierra 1500

—

1Ram ProMaster

Reliability ScoreTotal RecallsComplaint Rate

GMC Sierra 1500 vs Ram ProMaster: Which Is More Reliable?

GMC Sierra 1500 vs Ram ProMaster at-a-glance reliability comparison
Metric	GMC Sierra 1500	Ram ProMaster
Reliability Score	69/100	62/100
Years Tracked	9	9
Total Recalls	42	54
Complaints per 10k Sold	15.4	4.6
Year Wins	8	1

What Are the Common Problems With the GMC Sierra 1500 and Ram ProMaster?

Sierra trouble is mechanical and sudden. The 6.2L V8 can seize at highway speed, the 10-speed transmission can lock the rear wheels, and the upper grille trim can fly off and crack windshields. Promaster trouble is different: engine and dash shutoffs while driving, transmissions that thump or downshift on their own, and power steering that cuts out after water reaches the wiring. Many Promaster engine cooling complaints are about parts that were not available. Crash-linked reports exist in every major Sierra area, including six in steering. The Promaster has none in electrical or steering, only single crash reports in power train, engine, and brakes.

GMC Sierra 1500 vs Ram ProMaster common problem areas comparison
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	0.8Very Low	0.5Very Low
UNKNOWN OR OTHER	0.8Very Low	0.4Very Low
ENGINE AND ENGINE COOLING	0.8Very Low	0.4Very Low
SERVICE BRAKES	0.8Very Low	0.3Very Low
STRUCTURE	0.8Very Low	0.1Very Low
AIR BAGS	0.1Very Low	—None
EXTERIOR LIGHTING	0.1Very Low	—None
SUSPENSION	0.1Very Low	—None
FUEL/PROPULSION SYSTEM	0.1Very Low	—None
SEAT BELTS	—None	0.1Very Low
VEHICLE SPEED CONTROL	—None	0.1Very Low
FORWARD COLLISION AVOIDANCE	—None	0.1Very Low
LANE DEPARTURE	—None	0.1Very Low
BACK OVER PREVENTION	—None	0.1Very Low
WHEELS	—None	0.1Very Low
VISIBILITY/WIPER	—None	—None
LATCHES/LOCKS/LINKAGES	—None	—None
EQUIPMENT	—None	—None
TIRES	—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?

GMC Sierra 1500 vs Ram ProMaster year-by-year reliability scores
Year	GMC Sierra 1500	Ram ProMaster	Edge
2026	82/1000R / 0C	65/1001R / 1C	GMC Sierra 1500
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

Best years to cross-shop: The 2024 GMC Sierra 1500 scored 73/100 and the 2018 Ram ProMaster scored 68/100 — the strongest shared model years that have been on the road for at least two years, where available.

Who Should Buy the GMC Sierra 1500 vs the Ram ProMaster?

Pick the Sierra if you want a truck with the better overall standing and fewer recalls. Target the later 5th generation years, and be careful with 2019 and 2020, which are the weakest. Skip any truck with the 6.2L V8 unless a shop can show its engine history, because seizures were reported as early as 2,872 miles and some engines failed after the recall fix. Ask whether the transmission valve body has been replaced. Pick the Promaster if you need a van and want a lower complaint rate. Avoid 2019 and 2021, the weakest years. Before you buy, check that every open recall is done, especially the engine cooling and transmission campaigns, since owners describe parts waits of many months. Test the steering on bumps and look for corrosion near the steering wiring. The newest years of either model have had little time to collect complaints, so do not read their clean records as proof.

GMC Sierra 1500 vs Ram ProMaster: Common Questions

Is the GMC Sierra 1500 more reliable than the Ram Promaster?: Yes, the Sierra has a clear edge, though both stand as good. It has fewer recalls across nine model years. The Promaster has fewer owner complaints per vehicle sold, but many of them concern recall repairs that were stuck waiting for parts.
Which has more recalls, the Sierra 1500 or the Promaster?: The Promaster has more. Federal recall records show 54 across nine model years, against 42 for the Sierra. Owner filings on the Promaster often mention engine cooling and transmission recall repairs where dealers said parts were not available.
Which model has more owner complaints?: The Sierra, by a wide margin. It has 2,647 complaints, or 15.4 per 10,000 sold. The Promaster has 294, or 4.6 per 10,000 sold. The Sierra's biggest pile is engine complaints, led by 6.2L V8 seizures.
What is the biggest problem with the Sierra 1500?: The 6.2L V8 can seize without warning, often at highway speed, and the truck loses power and will not restart. Most failures came between about 15,000 and 36,199 miles. Some engines failed after the recall remedy, and replacements are often back-ordered.
Which Promaster years should I avoid?: Avoid 2019 and 2021, the weakest years. The 2018 model is among the strongest. Common complaints include sudden electrical shutoffs while driving, transmission thumps, and power steering cutting out. Confirm all recall work is finished before you buy.

More GMC Sierra 1500 comparisons

GMC Sierra 1500 vs Chevrolet Silverado reliability GMC Sierra 1500 vs Ford F-150 reliability GMC Sierra 1500 vs Chevrolet Silverado EV reliability GMC Sierra 1500 vs Ram 1500 reliability GMC Sierra 1500 reliability by year GMC Sierra 1500 years to avoid

More Ram ProMaster comparisons

Ram ProMaster vs Toyota Tundra reliability Ram ProMaster vs Ford F-150 Lightning reliability Ram ProMaster vs Chevrolet Silverado reliability Ram ProMaster vs Ford F-150 reliability Ram ProMaster reliability by year Ram ProMaster years to avoid

Decided between GMC Sierra 1500 and Ram ProMaster? Run a VIN check before you buy — uncover hidden accidents, title issues, and open recalls.

Look Up a VIN →

How we score the GMC Sierra 1500 and Ram ProMaster

Scores weight complaint severity at 35%, repair costs at 30%, recall impact at 20%, and the spread of complaints across systems at 15%, with complaint counts adjusted for US sales. Read the full methodology.

See incorrect data? Report an issue