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Service campaign N252529080

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 id11030439
Published by NHTSA2026-04-01
Manufacturer's numberN252529080
Manufacturer's date2026-04-01
Campaign id or software versionN252529080
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

Service Update. Certain vehicles listed above may be missing a high voltage header plug on the RESS battery pack drive motor connector. Dealers are to inspect the RESS pack connectors and install the proper HV Header Plug if missing.

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

Electrical system

Vehicles listed
BRIGHTDROP 600 ELCV2023 to 2024
BRIGHTDROP ZEVO 4002024 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC ESCALADE IQ2025, 2026
CADILLAC ESCALADE IQL2026
CHEVROLET BRIGHTDROP 4002025 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET BRIGHTDROP 6002025 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO EV2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it)
GMC HUMMER EV PICKUP2024, 2025, 2026
GMC HUMMER EV SUV2024, 2025, 2026
GMC SIERRA EV2024, 2025, 2026 (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.

Recalls for the same vehicles and component
26V4940002026-07-30. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
24V9370002024-12-18. FORWARD COLLISION AVOIDANCE: WARNINGS:EXTERNAL/PEDESTRIAN ALERT; ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM
24V3200002024-05-09. ELECTRICAL SYSTEM:PROPULSION SYSTEM; ELECTRICAL SYSTEM:WIRING

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
N2525140012026-10-05. Service campaign. Service Update. Certain vehicles listed above may enable the new King Crab Feature through OTA programming or programming at the dealer. Dealers will perform a comprehensive software update. Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over-the-air (OTA) technology without having to bring their vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates.
N2525155902026-01-27. Service campaign. Certain vehicles listed above, may have a condition in which the body-to-chassis ground strap may be corroded. Dealers will replace the ground strap.
25-NA-1532025-12-04. Service bulletin. This informational bulletin provides Information on Rear Upper Body Structure Auxiliary Lamp Will Not Turn ON.
25-NA-1312025-11-05. Service bulletin. This Service bulletin provides information on the heated seats warming up when the vehicle is started but soon cooling off and the heated seat LED indicator remaining illuminated may be due to the BCM software calibration.
25-NA-1212025-10-27. Service bulletin. This service bulletin provides information on the radio software related issues to update the radio to the latest software version Y177.
25-NA-1192025-10-27. Service bulletin. This service bulletin provides information on the Service Safety Restraint Message displayed on the DIC Airbag malfunction indicator illuminated.
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.
25-NA-0442025-10-27. Service bulletin. This service bulletin provides information for dealers/technicians on SPS2 Hybrid/EV Battery Data Retrieval for Service High Voltage DTCs.
24-NA-2022025-10-27. Service bulletin. This service bulletin provides dealers with Warranty Administration information on North American Charging Standard (NACS) DC Adapter Warranty Claim Information.
PIE08392025-10-27. Service bulletin. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Inoperative Lumbar and/or Massage Function Message on Driver Information Center (DIC).