GMC: Reliability & Common Problems

Compare with another brand: choose a brand… AcuraAudiBMWBuickCadillacChevroletChryslerDodgeFordGenesisHondaHyundaiInfinitiJaguarJeepKiaLand RoverLexusLincolnMazdaMercedesNissanPorscheRAMSubaruTeslaToyotaVolkswagenVolvo

Cross-shopping? GMC vs Toyota · GMC vs Honda · GMC vs Ford

Across every GMC body style we've inspected — sedans, SUVs and anything else pooled together — the average one's condition dips below decent (a 55/100 score) around ~107k miles. It ranks GMC #18 of 24 brands we have enough data to rate; the longest-lasting, Tesla, holds up to ~184k. Shopping a GMC near that mileage? Expect more wear ahead — see which makes give the best odds at your budget.

Share of GMCs in good shape (scoring 60+/100) by mileage and by age when we inspected them (each dot ≥5 cars; a band under 20 cars follows the nearby bands, so a run above the all-cars line stays above it, and a band of 20 or more uses the rate we measured; where a band has too few cars, the line follows the trend between the bands on either side; rolled-back odometers excluded from the mileage curve). The dashed grey curve is all cars we check.

Standing in front of a GMC, start under the hood and on a scan tool, not with the paint. Oil leaks and fuel-trim faults are the problems that should kill or cheapen the deal, and active codes are nearly as common, with cleared codes showing up more often than across the wider fleet, so a dark dash is not a clean history. Tires and worn shocks are the next money checks. These trucks tend to fall below decent around 107,000 miles and rank near the back on longevity, so past that point walk unless the engine and electronics both check out. Structural repairs are not the special risk; repaint alone is not either.