Most Replaced Parts on the T1 GMC Yukon (2021-2024)

The Yukon T1 ran from 2021-2024 and is IRS, air ride on Denali and AT4. After enough of these come across the parts counter you start to see the same short list of components over and over. Here is what owners of this generation actually end up buying, and what to know before you order.

Electrical and Charging

The usual tell is a slow crank on the first cold morning of the year. Mileage is a rough guide here. Load, heat and road surface matter more.

Common parts in this group: batteries, battery cables, alternators, starters, body control modules.

Worth knowing: Many recent GM vehicles need the new battery registered to the module or the charging system will keep undercharging it.

Exhaust and Emissions

The usual tell is a diesel that regenerates far more often than it used to. Catch it early and it is a parts bill. Ignore it and it becomes a parts and labor bill.

Common parts in this group: catalytic converters, oxygen sensors, DEF injectors, diesel particulate filters, EVAP purge valves.

Worth knowing: Diesel aftertreatment parts are tightly integrated with the calibration.

Body and Exterior

The usual tell is a door handle that pulls with no resistance. The number in the manual assumes conditions most people in North Texas do not have.

Common parts in this group: mirrors, door handles, grilles, bumper covers, headlamps.

Worth knowing: Factory paint codes only work if the substrate and primer are the same.

Brakes

The usual tell is a grinding noise, which means the friction material is already gone. This is one of the items where a towing or work truck and a commuter diverge sharply.

Common parts in this group: brake pads, brake rotors, brake calipers, brake hoses, wheel speed sensors.

Worth knowing: GM friction material is matched to the specific rotor metallurgy and the ABS calibration on your vehicle.

Glass and Wipers

The usual tell is wipers that park in the wrong position. This is one of the items where a towing or work truck and a commuter diverge sharply.

Common parts in this group: wiper blades, wiper transmissions, wiper motors, washer pumps, rain sensors.

Worth knowing: GM wiper arms and blades are matched to the specific windshield curvature, and length is not the only variable.

Cooling System

The usual tell is crusty orange residue around a hose clamp or the surge tank seam. This is one of the items where a towing or work truck and a commuter diverge sharply.

Common parts in this group: radiators, water pumps, thermostats, coolant hoses, cooling fans.

Worth knowing: GM cooling systems are DEX-COOL based and the seal and gasket materials are chosen for that chemistry.

Before You Order

Have the VIN ready. On a Yukon the same model year can carry two or three different engines and several suspension packages.
Check the SPID label in the glove box or console for your RPO codes.
Front and rear parts are rarely the same number, even when they look identical.
If the part is electrical, confirm the fit before you order. Electrical parts are not returnable at any GM dealer, including us.

Shops and fleets can set up wholesale pricing at gmpartsclub.com/wholesale. Everyone else can start at our GMC OEM parts catalog or search for Yukon parts.