Last updated: 2026-10-10
Most Reliable GMC Models — Ranked in 2026
We ranked every GMC model and year in our database by reliability score. The average GMC scores 71/100 across all models and years. The 2026 GMC Yukon is the most reliable GMC with a score of 82/100.
GMC Reliability Rankings
| # | Vehicle | Best Year | Score | Rating | Recalls | Complaints / 10k | Maint. Rating | Est. Repair Cost |
|---|---|---|---|---|---|---|---|---|
| 1 | 2026 GMC Yukon | 2026 | 82/100 | Excellent | 0 | — | 3.5 | $747/yr |
| 2 | 2026 GMC Sierra 1500 | 2026 | 82/100 | Excellent | 0 | — | 3.5 | |
| 3 | 2026 GMC Terrain | 2026 | 82/100 | Excellent | 0 | — | 3.5 | $558/yr |
| 4 | 2025 GMC Sierra 1500 | 2025 | 80/100 | Excellent | 1 | 2.0 | 3.5 | |
| 5 | 2024 GMC Canyon | 2024 | 79/100 | Good | 3 | 1.0 | 3 | $548/yr |
| 6 | 2025 GMC Terrain | 2025 | 78/100 | Good | 0 | 1.1 | 3.5 | $558/yr |
| 7 | 2024 GMC Terrain | 2024 | 77/100 | Good | 1 | 3.5 | 3.5 | $558/yr |
| 8 | 2025 GMC Yukon | 2025 | 76/100 | Good | 1 | 5.6 | 3.5 | $747/yr |
| 9 | 2025 GMC Acadia | 2025 | 76/100 | Good | 0 | — | 3 | $734/yr |
| 10 | 2026 GMC Acadia | 2026 | 76/100 | Good | 0 | — | 3 | $734/yr |
| 11 | 2026 GMC Canyon | 2026 | 76/100 | Good | 0 | — | 3 | $548/yr |
| 12 | 2020 GMC Canyon | 2020 | 76/100 | Good | 0 | — | 3 | $548/yr |
| 13 | 2019 GMC Canyon | 2019 | 76/100 | Good | 0 | — | 3 | $548/yr |
| 14 | 2024 GMC Acadia | 2024 | 76/100 | Good | 0 | — | 3 | $734/yr |
| 15 | 2023 GMC Terrain | 2023 | 75/100 | Good | 2 | 2.9 | 3.5 | $558/yr |
| 16 | 2021 GMC Terrain | 2021 | 74/100 | Good | 2 | 5.9 | 3.5 | $558/yr |
| 17 | 2024 GMC Sierra 1500 | 2024 | 73/100 | Good | 1 | 10.1 | 3.5 | |
| 18 | 2025 GMC Canyon | 2025 | 72/100 | Good | 2 | 0.0 | 3 | $548/yr |
| 19 | 2022 GMC Terrain | 2022 | 72/100 | Good | 4 | 7.5 | 3.5 | $558/yr |
| 20 | 2020 GMC Yukon | 2020 | 71/100 | Good | 5 | 9.3 | 3.5 | $747/yr |
| 21 | 2018 GMC Canyon | 2018 | 71/100 | Good | 1 | — | 3 | $548/yr |
| 22 | 2022 GMC Canyon | 2022 | 71/100 | Good | 1 | — | 3 | $548/yr |
| 23 | 2019 GMC Yukon | 2019 | 71/100 | Good | 2 | 12.7 | 3.5 | $747/yr |
| 24 | 2023 GMC Sierra 1500 | 2023 | 69/100 | Good | 3 | 13.4 | 3.5 | |
| 25 | 2020 GMC Terrain | 2020 | 68/100 | Good | 2 | 18.6 | 3.5 | $558/yr |
| 26 | 2021 GMC Acadia | 2021 | 68/100 | Good | 2 | — | 3 | $734/yr |
| 27 | 2019 GMC Terrain | 2019 | 68/100 | Good | 3 | 16.1 | 3.5 | $558/yr |
| 28 | 2018 GMC Acadia | 2018 | 68/100 | Good | 2 | — | 3 | $734/yr |
| 29 | 2018 GMC Yukon | 2018 | 68/100 | Good | 4 | 14.5 | 3.5 | $747/yr |
| 30 | 2024 GMC Yukon | 2024 | 68/100 | Good | 2 | 5.1 | 3.5 | $747/yr |
| 31 | 2021 GMC Canyon | 2021 | 68/100 | Good | 2 | — | 3 | $548/yr |
| 32 | 2023 GMC Canyon | 2023 | 66/100 | Good | 3 | — | 3 | $548/yr |
| 33 | 2018 GMC Terrain | 2018 | 66/100 | Good | 5 | 17.6 | 3.5 | $558/yr |
| 34 | 2018 GMC Sierra 1500 | 2018 | 66/100 | Good | 5 | 16.0 | 3.5 | |
| 35 | 2022 GMC Acadia | 2022 | 66/100 | Good | 3 | — | 3 | $734/yr |
| 36 | 2022 GMC Sierra 1500 | 2022 | 65/100 | Good | 5 | 22.7 | 3.5 | |
| 37 | 2023 GMC Acadia | 2023 | 64/100 | Good | 4 | — | 3 | $734/yr |
| 38 | 2021 GMC Sierra 1500 | 2021 | 63/100 | Good | 6 | 21.1 | 3.5 | |
| 39 | 2020 GMC Sierra 1500 | 2020 | 63/100 | Good | 11 | 18.2 | 3.5 | |
| 40 | 2020 GMC Acadia | 2020 | 62/100 | Good | 6 | — | 3 | $734/yr |
| 41 | 2022 GMC Yukon | 2022 | 62/100 | Good | 9 | 30.1 | 3.5 | $747/yr |
| 42 | 2023 GMC Yukon | 2023 | 61/100 | Good | 8 | 40.0 | 3.5 | $747/yr |
| 43 | 2019 GMC Sierra 1500 | 2019 | 60/100 | Good | 10 | 28.1 | 3.5 | |
| 44 | 2021 GMC Yukon | 2021 | 55/100 | Mixed | 25 | 48.7 | 3.5 | $747/yr |
Model Summaries
GMC Acadia
Park-recognition faults are the main worry on a used Acadia: the shifter leaves a "Shift to Park" message on, and some cars have rolled after the driver got out. Reliability is good and close to SUV average, but repairs run $734 a year against $573 for midsize SUVs. Favor the 2024 and watch the 2020 and 2023.
Average score: 70/100. Best year: 2024 (76/100). 8 years tracked.
GMC Canyon
Rated good overall and above average among trucks, the Canyon is a reasonable used buy with repair costs in line with other midsize trucks. The 2024 is the pick, though its headlights can flicker off and on by themselves. Skip the 2023, where the forward collision system brakes hard with nothing ahead, and watch for 8-speed automatic shudder in any year.
Average score: 73/100. Best year: 2024 (79/100). 9 years tracked.
GMC Sierra 1500
Failed valve lifters are the big risk with used Sierra 1500 trucks, and they can wreck an engine with little warning. Reliability rates good and close to average among full-size trucks. Skip 2019 and 2020, favor 2024, and test drive any truck for hard, lunging shifts from the automatic.
Average score: 69/100. Best year: 2024 (73/100). 9 years tracked.
GMC Terrain
Used Terrain buyers get a model that rates good and sits above average among SUVs, as long as the year is chosen with care. Skip 2018 and 2019. The big risk is the brake booster vacuum pump, which can fail and leave the pedal rock hard before debris wrecks the engine. Transmission slipping and harsh shifts are the second worry. The 2024 model is the safer pick.
Average score: 73/100. Best year: 2024 (77/100). 9 years tracked.
GMC Yukon
Used Yukons hold up well, and yearly repair costs run a little under the full-size SUV average. The 2020 is the safer pick, and 2021 is the year to avoid. The problem that matters most is engine lifter and camshaft failure, which shows up as ticking, misfires, and sudden power loss, often with no warning light. Transmission slipping and shudder come second.
Average score: 68/100. Best year: 2020 (71/100). 9 years tracked.
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Frequently Asked Questions
- What is the most reliable GMC?
- Based on our data, the 2026 GMC Yukon is the most reliable GMC with a score of 82/100 ("Excellent"). It has 0 recalls and 11 owner complaints.
- Are GMC vehicles reliable?
- GMC vehicles have an average reliability score of 71/100 across all models and years in our database. Individual models vary, so checking the specific model year you're considering is important.
- Which GMC models should I avoid?
- Based on our data, these GMC model-years are statistical outliers within their lines: 2020 Terrain (68/100), 2023 Canyon (66/100), 2018 Terrain (66/100), 2023 Acadia (64/100), 2021 Sierra 1500 (63/100), 2020 Acadia (62/100), 2019 Sierra 1500 (60/100), 2021 Yukon (55/100). These have higher recall counts and complaint volumes relative to their siblings.
- How do GMC repair costs compare?
- Repair costs vary by model. Check the detailed rankings table above for estimated annual repair costs for each GMC model year.
How we score GMC model years
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.
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