USA
GMC is the premium truck and SUV brand within General Motors. Their vehicles share platforms with Chevrolet but feature more upscale interiors and exclusive trims like Denali and AT4. If you want a Silverado or Tahoe with a nicer interior, the Sierra and Yukon are the answer.
3/5
Reliability Rating
$695/year
Avg. Annual Repair Cost
3
Models Covered
GMC vehicles have average reliability. Some models are excellent while others have known issues — model selection is important.
Same AFM/DFM oil consumption issue as Chevrolet since they share the same engines.
Years affected: 2007-2020
Same 8L90 transmission shudder as the Silverado.
Years affected: 2015-2020
Premature brake pad and rotor wear, especially on heavier models like Yukon and Sierra.
Years affected: 2014-2020
1999-present
The GMC Sierra is essentially a premium Silverado with a different grille and nicer interior trims.
2010-present
The GMC Terrain is a compact SUV that competes with the Chevrolet Equinox.
1992-present
The GMC Yukon is a full-size SUV that shares its platform with the Chevrolet Tahoe but features a more upscale interior, especially in Denali trim.
GM's 4.3L V6 and early LS-series V8 engines rarely have head gasket issues. The Duramax diesel, however, can develop head gasket failures from high cylinder pressures — a $3,000-$6,000 repair.
GM trucks and SUVs use hub assemblies that include the ABS sensor. Replacement is straightforward but costs $200-$400 per wheel.
GM V8 engines (LS/LT series) still use traditional spark plug wires. AC Delco or MSD wires are recommended.
GMC vehicles are $2,000-$5,000 more than their Chevrolet counterparts for a nicer interior and different styling. The Denali trim is the best interior in any American truck/SUV. The Sierra AT4 is great for off-roading. For used buyers, the same advice as Chevrolet applies — budget for AFM oil consumption and 8-speed transmission fluid changes. The 6.2L V8 with the 10-speed is the best powertrain combo in newer models.