Skip to content
T1XX · Truck

2024 GMC Sierra 2500 HD

Common problems & what to know before you buy

Before you message the seller, know the documented failure patterns, repair cost exposure, and risk level for the 2024 GMC Sierra 2500 HD.

Common problems

What to watch for on the 2024 GMC Sierra 2500 HD

major·6.6L V8 diesel (L5P)

Diesel Emissions System Faults (DEF, DPF, NOx sensors)

The emissions hardware is the most common source of warning lights and limp mode, especially on trucks driven mostly on short trips.

Typical repair cost
$800 – $4,000

Which of these apply to your 2024 Sierra 2500 HD?

Your guide shows which apply to the exact car, and what to ask the seller.

Owner complaints

What 1 owners reported

Engine1

Source: NHTSA

Specifications

2024 GMC Sierra 2500 HD at a glance

Trims
AT4DenaliProSLESLT
Engine
6.6L 8-Cylinder, 6.6L 8-Cylinder Turbo Diesel
Transmission
Automatic 10-spd
Drivetrain
RWD, 4WD
Fuel
Gasoline, Diesel
Body style
Truck
Browse

Other GMC Sierra 2500 HD years

Free Car Finder

Still deciding on the 2024 GMC Sierra 2500 HD?

Answer a few quick questions and see your top 3 used cars, with the years to shop.

Find my car
FAQ

Frequently asked questions

What are the common problems with the 2024 GMC Sierra 2500 HD?

Owners have filed 1 complaint about the 2024 GMC Sierra 2500 HD with NHTSA, most often about the engine. No recall campaigns are on file for this model year. Known problems on its engines include diesel emissions system faults. Squeezed's free research-backed buyer guide cross-references these against documented failure patterns and mileage-stage risks, sorted by severity, in about a minute.

Is the 2024 GMC Sierra 2500 HD reliable?

Reliability depends heavily on the specific configuration and how the car was maintained. Generate a Squeezed buyer guide for this exact vehicle to see a reliability snapshot, repair-cost exposure, and the questions to ask the seller before you buy.

Should I still get a pre-purchase inspection on a 2024 GMC Sierra 2500 HD?

Always. A Squeezed buyer guide is the triage step before the inspection: it shows you the documented failure patterns and what to check so you can decide which 2024 GMC Sierra 2500 HD listings are even worth a mechanic's time, then walk into the PPI knowing exactly what to look for.

Squeezed is a buyer guide based on public data and industry patterns, not a mechanical inspection. Always get a professional pre-purchase inspection before you buy.