This page lists 19 automatic transmission parts for the 2026 GMC Hummer Ev Pickup, across 13 part types, covering the ELECTRIC engine. Every part shows its brand, manufacturer part number and fitment notes.
The automatic transmission on the 2026 GMC Hummer Ev Pickup covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts. The largest groups are Output Shaft (3 parts), Transmission Fluid (3 parts) and Fluid Cooler (2 parts). The other 10 part types cover the remaining 11 parts.
The 2026 GMC Hummer Ev Pickup came with a single engine, the ELECTRIC, and every part is verified against it.
3 brands supply automatic transmission parts for the 2026 GMC Hummer Ev Pickup, led by GM GENUINE (16 parts), PENTOSIN (2 parts) and ACDELCO (1 part).
Each part number listed for the 2026 GMC Hummer Ev Pickup opens a page with every vehicle that part fits.
Case Vent
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 24285067 | 🇺🇸 US 🇨🇦 CA | Primary Drive Unit(P79),Primary Drive Unit(P8L),Primary Drive Unit(P80),Secondary Drive Unit(S8L),Secondary Drive Unit(S80)Vent Pipe | View on Amazon |
This table covers the vents on a transmission or axle housing.
This group shows a single part: GM GENUINE 24285067.
Filter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 24046946 | 🇺🇸 US 🇨🇦 CA | Fits 2X ModelSingle Use | View on Amazon |
This table covers the replacement filters for this application — the table heading and notes say which circuit. Typical signs include restricted flow — long cranking, weak airflow, or dirty fluid after a short interval. Seat the new filter so it cannot bypass, and use the grade the notes call for.
One part is listed for the 2026 GMC Hummer Ev Pickup — GM GENUINE 24046946.
Fluid Cooler
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 24041730 | 🇺🇸 US 🇨🇦 CA | 3X ModelPrimary Drive Unit(P79) | View on Amazon |
| GM GENUINE | 24041731 | 🇺🇸 US 🇨🇦 CA | Fits 2X ModelChina Group (MAO), Israel (MBI), Secondary Drive Unit (S80) | View on Amazon |
This table covers the heat exchangers that cool transmission fluid. Typical signs include fluid that overheats, a leak at the cooler fittings, or milky fluid that says coolant and ATF have mixed. Flush the lines when you replace a cooler. Cross-contamination is how a small leak becomes a transmission job.
GM GENUINE supplies both parts for the 2026 GMC Hummer Ev Pickup.
Listed part numbers: GM GENUINE 24041730 and GM GENUINE 24041731.
Fluid Cooler Line Clip
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 11547354 | 🇺🇸 US 🇨🇦 CA | FITS 19-24.5MM TUBECLIP with Tie Strap | View on Amazon |
This table covers the Fluid Cooler Line clips.
One part is listed for the 2026 GMC Hummer Ev Pickup — GM GENUINE 11547354.
Fluid Cooler O-Ring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 24273624 | 🇺🇸 US 🇨🇦 CA | SINGLE USE | View on Amazon |
This table covers the Fluid Cooler O-rings. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove.
One part is listed for the 2026 GMC Hummer Ev Pickup — GM GENUINE 24273624.
Fluid Pan Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 11602951 | 🇺🇸 US 🇨🇦 CA | 3X ModelPrimary Drive Unit(P79) | View on Amazon |
This table covers the Fluid Pan drain plugs.
This group shows a single part: GM GENUINE 11602951.
Fluid Pan Magnet
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 29535617 | 🇺🇸 US 🇨🇦 CA | Length: 1.8 In | View on Amazon |
This table covers the Fluid Pan magnets.
This group shows a single part: GM GENUINE 29535617.
Fluid Temperature Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 55488246 | 🇺🇸 US 🇨🇦 CA | Fits without Sealwithout Gasket | View on Amazon |
This table covers the Fluid temperature sensors. Typical signs include hard cold starts, a fan that never comes on, or a gauge that disagrees with the scan tool. A sensor that reads open or shorted is usually the part; an implausible-but-smooth reading can be wiring.
One part is listed for the 2026 GMC Hummer Ev Pickup — GM GENUINE 55488246.
Output Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 24060252 | 🇺🇸 US 🇨🇦 CA | 3X ModelPrimary Drive Unit(P79) | View on Amazon |
| GM GENUINE | 24061254 | 🇺🇸 US 🇨🇦 CA | REF Bulletin 25-NA-108Primary Drive Unit(P8L),Primary Drive Unit(P80),Secondary Drive Unit(S8L),Secondary Drive Unit(S80) | View on Amazon |
| GM GENUINE | 24066406 | 🇺🇸 US 🇨🇦 CA | Output Shaft Spline Quantity: 42 | View on Amazon |
This table covers the Output shafts.
3 Output Shaft parts for the 2026 GMC Hummer Ev Pickup come from GM GENUINE.
This group includes GM GENUINE 24060252, GM GENUINE 24061254 and GM GENUINE 24066406.
Output Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 24041807 | 🇺🇸 US 🇨🇦 CA | SINGLE USE | View on Amazon |
This table covers the seals at the Output Shaft. 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.
One part is listed for the 2026 GMC Hummer Ev Pickup — GM GENUINE 24041807.
Pinion Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 24042033 | 🇺🇸 US 🇨🇦 CA | Fits ULTIUM LI 1.0 PROP ENERGY STORAGE PACK(ETI),SECONDARY DRIVE UNIT(S80),PRIMARY DRIVE UNIT(P8L),PRIMARY DRIVE UNIT(P80),PRIMARY DRIVE UNIT(P79), LI 20-MOD PROP ENERGY STORAGE PACK(ETJ), LI 24-MOD PROP ENERGY STORAGE PACK(ETN),SECONDARY DRIVE UNIT(S8L)CASE BEARING | View on Amazon |
This table covers the Pinion bearings. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
This group shows a single part: GM GENUINE 24042033.
Retaining Ring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 24052327 | 🇺🇸 US 🇨🇦 CA | Fits 2X ModelUltium LI 1.0 Prop Energy Storage Pack(ETI),Secondary Drive Unit(S80) | View on Amazon |
| GM GENUINE | 24061253 | 🇺🇸 US 🇨🇦 CA | Primary Drive Unit(P80),Primary Drive Unit(P8L),Secondary Drive Unit(S80),Secondary Drive Unit(S8L)Output Shaft Retaining Ring | View on Amazon |
This table covers the Retaining rings.
2 Retaining Ring parts for the 2026 GMC Hummer Ev Pickup come from GM GENUINE.
Listed part numbers: GM GENUINE 24052327 and GM GENUINE 24061253.
Transmission Fluid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | 104107 | 🇺🇸 US | 1 QuartDexron ULV | View on Amazon |
| PENTOSIN | 1058114 | 🇺🇸 US 🇨🇦 CA | 1 LiterATF84 | View on Amazon |
| PENTOSIN | 1058216 | 🇺🇸 US 🇨🇦 CA | 5 LitersATF84 | View on Amazon |
This table covers the automatic-transmission fluids specified for this gearbox. Typical signs include harsh or delayed shifts, fluid that smells burnt, or a shudder at light throttle. Use exactly the specification in the notes. Automatic transmissions are unforgiving of the wrong fluid.
3 Transmission Fluid parts are listed for the 2026 GMC Hummer Ev Pickup, from PENTOSIN and ACDELCO.
Listed part numbers: ACDELCO 104107, PENTOSIN 1058114 and PENTOSIN 1058216.
Buying Automatic Transmission Parts for a 2026 GMC Hummer Ev Pickup
On this vehicle, the automatic transmission covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts.
- 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 filter and pan gasket with every fluid service, and flush the cooler lines when replacing a failed unit.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Output Shaft and Transmission Fluid .
Frequently Asked Questions
How many automatic transmission parts fit the 2026 GMC Hummer Ev Pickup?
Our catalog currently lists 19 automatic transmission parts for the 2026 GMC Hummer Ev Pickup across 13 subcategories and 3 brands, covering the ELECTRIC engine. Each part is matched to the engine(s) it fits.
What are the signs of automatic transmission problems on a 2026 GMC Hummer Ev Pickup?
Common symptoms include delayed or harsh engagement, slipping under load, fluid that smells burnt, or shuddering at light throttle around 40 mph. 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 filter and pan gasket with every fluid service, and flush the cooler lines when replacing a failed unit.
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 2026 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 2026 GMC Hummer Ev Pickup?
Every part on this page is matched to the ELECTRIC engine. Then use exactly the fluid specification in the notes — automatic transmissions are the least forgiving component on the vehicle about fluid choice. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2026 GMC Hummer Ev Pickup
Automatic Transmission Parts for Other GMC Hummer Ev Pickup Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.