GM Parts Club
The Blazer Modern Blazer ran from 2019-2024 and is C1XX crossover, not the K5. 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.
Brakes
The usual tell is a pedal that sits lower than it used to, or sinks slowly at a stoplight. The number in the manual assumes conditions most people in North Texas do not have.
Common parts in this group: brake pads, brake rotors, brake calipers, brake hoses, wheel speed sensors.
Worth knowing: Aftermarket rotors are frequently thinner at the same nominal diameter, which changes heat capacity and warp behavior.
Electrical and Charging
The usual tell is power windows or seats getting slower over a season. Heat is the accelerant on this one, which is why it shows up faster here than up north.
Common parts in this group: batteries, battery cables, alternators, starters, body control modules.
Worth knowing: GM’s battery management system is calibrated to a specific battery chemistry, group size and reserve capacity.
Interior
The usual tell is carpet that stays damp under a worn factory mat. Worth checking at the same time you rotate tires, since the wheel is already off.
Common parts in this group: floor liners, carpet floor mats, console lids, seat covers, shift knobs.
Worth knowing: GM Accessories liners are laser-measured to the specific floor pan and retain the factory anchor posts, which is a safety item.
Cooling System
The usual tell is crusty orange residue around a hose clamp or the surge tank seam. Owners who do mostly short trips see this sooner than the mileage suggests.
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.
Body and Exterior
The usual tell is a mirror that shakes at highway speed after a folding motor fails. Worth checking at the same time you rotate tires, since the wheel is already off.
Common parts in this group: mirrors, door handles, grilles, bumper covers, headlamps.
Worth knowing: Body panels and lamps have to match the vehicle’s specific mounting points and, on lamps, the exact photometric pattern that was certified.
Sensors, Cameras and Driver Assistance
The usual tell is a park assist system that disables itself in cold weather and comes back warm. The number in the manual assumes conditions most people in North Texas do not have.
Common parts in this group: park assist sensors, backup cameras, blind zone modules, front camera modules, radar sensors.
Worth knowing: TPMS sensors have to match the protocol and frequency the receiver expects.
Before You Order
- Have the VIN ready. On a Blazer 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.
Everything here is available as a genuine GM part through our Chevrolet OEM parts catalog. If you would rather search directly, search for Blazer parts.
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