GMC Sierra 2500HD Road Test

Model Year Summary
The Sierra HD and its twin, the Chevrolet Silverado HD, are designed for heavy towing and hauling. The 6.0-liter V8 and 6.6-liter turbodiesel are both mated to a six-speed automatic. The latter employs a heavy-duty transmission made by Allison. There is also a natural gas version of the 6.0-liter V8. The Z71 suspension tends to make the ride stiffer. Options include a snow plow preparation kit and a frame-mounted hitch for fifth-wheel towing. The cab offers a lot of storage space, and can easily serve as a mobile office. The top-trim Denali has a luxurious interior. Beginning with the 2016 model year, Apple CarPlay and Android Auto capabilities are added to the infotainment system.

Better than average New Car Reliability Prediction

Based on the latest survey, we expect reliability of new models will be 32% above average

Warranty

All cars come with basic warranty coverage, also known as a bumper-to-bumper warranty. This protects consumers against unexpected problems with non-wear items. Powertrain warranty protects against engine and transmission troubles. Rust through, or corrosion warranty, covers rust to non-damaged components. Roadside aid provides on-location assistance in case of a breakdown and may include limited towing services.

Extended warranties provide peace of mind. Owners of models known to have worse-than-average predicted reliability can mitigate risks with an extended warranty. Generally, we recommend buying a model with better-than-average reliability and skipping this expensive add on. If you do buy an extended warranty, it is key to read the small print to understand what is covered and where you can bring the car for repairs.

Basic (years/miles)
3/36000

Powertrain (years/miles)
5/60000

Rust through (years/miles)
5/60000

Roadside aid (years/miles)
5/60000