The 2023 GMC Hummer Ev Pickup has 24 cooling system parts with verified fitment on this page — 6 part types and 10 brands, covering the ELECTRIC engine. Each part includes a manufacturer part number and application notes.
On the 2023 GMC Hummer Ev Pickup, the cooling system system keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses. 21 parts of the 24 listed are Coolant / Antifreeze (12 parts), Temperature Sender / Sensor (6 parts) and Thermostat / Thermostat Housing / Water Outlet Seal (3 parts). The other 3 part types cover the remaining 3 parts.
The 2023 GMC Hummer Ev Pickup came with a single engine, the ELECTRIC, and every part is verified against it.
10 brands supply cooling system parts for the 2023 GMC Hummer Ev Pickup, led by PRESTONE (7 parts), GM GENUINE (6 parts) and PEAK (3 parts), plus 7 more brands. Quality grades include Standard Replacement, Economy and Premium.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2023 GMC Hummer Ev Pickup. 5 parts have it, including PRESTONE AF2100 (Coolant / Antifreeze) and GM GENUINE 55497116 (Temperature Sender / Sensor). Each part number opens a page with every vehicle that part fits.
Coolant / Antifreeze
Compatible With All Colors
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE | AF3055 | 🇺🇸 US 🇨🇦 CA | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PEAK | BQA1GAL | 🇺🇸 US 🇨🇦 CA | Blue Mountain Long LifeAll Vehicle | View on Amazon |
| PRESTONE | AF3100 | 🇺🇸 US 🇨🇦 CA | Prime Yellow - All VehiclesExtended Life | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE | AFC12100 | 🇺🇸 US 🇨🇦 CA | Command Nitrite Free Extended Life CoolantYellow Nitrite Free OAT | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular | AF2100 | 🇺🇸 US 🇨🇦 CA | All Vehicles10yr/300k mi | View on Amazon |
| PEAK | PKP1GAL | 🇺🇸 US 🇨🇦 CA | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK | PXA1GAL | 🇺🇸 US 🇨🇦 CA | Global Lifetime1 Gallon | View on Amazon |
| PRESTONE | AFMAX | 🇺🇸 US 🇨🇦 CA | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | 105027 | 🇺🇸 US 🇨🇦 CA | DEX-Cool Extended LifeDexcool (with DE-Ionized Water) (with Bitterant) 1 Gallon | View on Amazon |
| VALVOLINE Popular | ZXEL1 | 🇺🇸 US 🇨🇦 CA | Dex-Cool Orange1 Gallon | View on Amazon |
| PRESTONE | AF3400 | 🇺🇸 US 🇨🇦 CA | Prime OrangeOrange Compatible | View on Amazon |
| PRESTONE | AF850 | 🇺🇸 US 🇨🇦 CA | DEX-Cool Extended Life1 Gallon | View on Amazon |
This table covers the engine coolants and antifreeze formulations specified for this cooling system. Typical signs include a rising temperature gauge, rusty or sludged coolant, or a heater that blows cold. Use the chemistry named in the notes. Mixing silicate, OAT and HOAT formulas can gel in the radiator.
12 Coolant / Antifreeze parts are listed for the 2023 GMC Hummer Ev Pickup, from PRESTONE, PEAK, ACDELCO and 1 other brand. PRESTONE AF2100 carries the "Popular" badge.
The Compatible With All Colors section lists 1 option from PRESTONE — grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. PRESTONE AF3055 is listed in this group.
In the Economy grade, PEAK and PRESTONE supply 2 parts: the catalog's value-priced group. A representative part number is PEAK BQA1GAL.
The Heavy Duty section lists 1 option from PRESTONE — rated for severe service. PRESTONE AFC12100 is listed in this group.
The Premium section lists 4 options from PRESTONE and PEAK — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.
The Standard Replacement section lists 4 options from PRESTONE, ACDELCO and VALVOLINE — built to original-equipment specification. ACDELCO 105027 is listed in this group.
Coolant Reservoir Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD | T124 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
This table covers the caps on the overflow / expansion tank. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable.
This group shows a single part: MOTORAD T124.
Radiator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 86533553 | 🇺🇸 US 🇨🇦 CA | Aluminum Core / Aluminum Tank | View on Amazon |
This table covers the radiators that dump engine heat to airflow through the core. Typical signs include overheating in traffic, a wet core, or coolant that disappears with no puddle. Replace the cap if it cannot hold the rated pressure, and bleed the system after the swap.
One part is listed for the 2023 GMC Hummer Ev Pickup — GM GENUINE 86533553.
Radiator Fan Assembly
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 86599464 | 🇺🇸 US 🇨🇦 CA | Electrical Or Mechanical: Electrical | View on Amazon |
This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator.
This group shows a single part: GM GENUINE 86599464.
Temperature Sender / Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD | 1814558 | 🇺🇸 US 🇨🇦 CA | Located on Radiator | View on Amazon |
| HOLSTEIN | 2CTS0334 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular | 55497116 | 🇺🇸 US 🇨🇦 CA | Includes Gasket | View on Amazon |
| WELLS Popular | 5S17529 | 🇺🇸 US 🇨🇦 CA | Screw-In TypeDrive Motor Battery Pack | View on Amazon |
| WALKER PRODUCTS | 2112061 | 🇺🇸 US 🇨🇦 CA | SensorIncludes O-Ring | View on Amazon |
| WELLS | 5S17528 | 🇺🇸 US 🇨🇦 CA | Push-In TypeDrive Motor Battery Pack | View on Amazon |
This table covers the senders that report coolant temperature to the gauge or ECU. Typical signs include a gauge that sits on empty or overheat, or a lamp that does not match what the engine is doing. Rule out the cluster and the wiring before replacing the sender.
6 Temperature Sender / Sensor parts are listed for the 2023 GMC Hummer Ev Pickup, from WELLS, GPD, HOLSTEIN and 2 other brands. GM GENUINE 55497116 carries the "Popular" badge.
Economy: 2 parts, from GPD and HOLSTEIN. A representative part number is GPD 1814558.
The Standard Replacement section: 4 options from WELLS, GM GENUINE and WALKER PRODUCTS. GM GENUINE 55497116 is listed in this group.
Part numbers include GM GENUINE 55497116, GPD 1814558 and HOLSTEIN 2CTS0334, among others listed above.
Thermostat / Thermostat Housing / Water Outlet Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 86824678 | 🇺🇸 US 🇨🇦 CA | Secondary Drive Unit(S8L)22MM Inside Diameter | View on Amazon |
| GM GENUINE | 86824679 | 🇺🇸 US 🇨🇦 CA | 17MM IDThermostat Seal | View on Amazon |
| GM GENUINE | 86824683 | 🇺🇸 US 🇨🇦 CA | Service O Ring 26MM IDThermostat Seal | View on Amazon |
This table covers the seals at the thermostat housing and water outlet. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
GM GENUINE supplies the 3 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2023 GMC Hummer Ev Pickup.
Listed part numbers: GM GENUINE 86824678, GM GENUINE 86824679 and GM GENUINE 86824683.
Buying Cooling System Parts for a 2023 GMC Hummer Ev Pickup
On this vehicle, the cooling system system keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses.
- Confirm you have the ELECTRIC engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Coolant / Antifreeze and Temperature Sender / Sensor .
Frequently Asked Questions
How many cooling system parts fit the 2023 GMC Hummer Ev Pickup?
Our catalog currently lists 24 cooling system parts for the 2023 GMC Hummer Ev Pickup across 6 subcategories and 10 brands, covering the ELECTRIC engine. Each part is matched to the engine(s) it fits.
What are the signs of cooling system problems on a 2023 GMC Hummer Ev Pickup?
Common symptoms include a rising temperature gauge in traffic, sweet-smelling steam, crusty deposits around hose clamps, or a heater that blows cold. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace the thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2023 GMC Hummer Ev Pickup was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2023 GMC Hummer Ev Pickup?
Every part on this page is matched to the ELECTRIC engine. Then replace coolant with the exact specification the manufacturer calls for — mixing chemistries can gel and block small passages. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2023 GMC Hummer Ev Pickup
Cooling System Parts for Other GMC Hummer Ev Pickup Years
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