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Service campaign N252517790

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService campaign
NHTSA id11024270
Published by NHTSA2025-10-14
Manufacturer's numberN252517790
Manufacturer's date2025-10-14
Campaign id or software versionN252517790
NHTSA componentPOWER TRAIN

NHTSA's summary

Certain vehicles, equipped with 8L80 or 8L90 Transmissions, may have a condition in which the reaction carrier cracks. Dealers are to replace the reaction carrier.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

Vehicles listed
CHEVROLET COLORADO2025, 2026
CHEVROLET EXPRESS2025
CHEVROLET SILVERADO 15002025 (the catalog's model; the bulletin names a series or trim of it)
GMC CANYON2025, 2026
GMC SAVANA2025
GMC SIERRA 15002025 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
N252502891-012026-08-20. Service campaign. Certain vehicles may have a condition in which the internal differential nut was cross threaded or missing during assembly. Dealers will review the vehicles service history in IVH, and if necessary, replace the rear electric drive transmission module.
N262556930-012026-06-17. Service campaign. Certain vehicles may have a condition in which the transfer case drive chain sprocket is cracked. Dealers are to replace the transfer case.
N2625569302026-06-02. Service campaign. Certain vehicles may have a condition in which the transfer case drive chain sprocket is cracked. Dealers are to replace the transfer case.
24-NA-2622025-12-03. Service bulletin. This bulletin helps aid the tech in possible 10L100 transmission noise that may be normal or abnormal depending on the concern noted.
25-NA-1082025-10-27. Service bulletin. This bulletin provides a procedure to inspect and verify the drive shafts are over extending past the 5mm tolerance, causing the customers concern of a fluid leak under the vehicle.
22-NA-1822025-09-27. Service bulletin. This service bulletin advises the technician to check if the transmission cooler lines are twisted to correct customer concerns of Harsh Shift, Shudder, Surge, Stall, Transmission Overheating and/or High Transmission Fluid Temperature.
PIE0824A2025-09-10. Service bulletin. This engineering information (EI) closure ends the need for gathering further information from field in regard to fluid leaking at the output seal and/or leaking at the front slip yoke (welch plug leak).
25-NA-0142025-07-08. Service bulletin. This bulletin provides a procedure to overhaul the control valve to replace a plate and worn down check ball to correct the customers concern of No Reverse, No Shift Past Third Gear - DTC P2732 Set.
24-NA-0752025-07-07. Service bulletin. This bulletin provides a procedure to add a shim to the rear axle to change the pitch of said axle to correct the angle of the axle to pinion variance.
21-NA-2382025-07-07. Service bulletin. This technical bulletin provides a procedure to inspect the front pump of the transmission for a possible leak.