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Service bulletin PIT6215C

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 bulletin
NHTSA id11032952
Published by NHTSA2026-05-28
Manufacturer's numberPIT6215C
Manufacturer's date2026-05-21
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

This Preliminary information communicates to dealership technicians that if they encounter a customer vehicle with this concern, to perform the steps listed and should be able to reprogram the module and correct this.

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.

Vehicles listed
BRIGHTDROP ZEVO 4002024 (the catalog's model; the bulletin names a series or trim of it)
BRIGHTDROP ZEVO 6002023, 2024 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC CT42020, 2021, 2022, 2023, 2024, 2025, 2026
CADILLAC CT52025, 2026
CADILLAC ESCALADE2025, 2026
CADILLAC ESCALADE ESV2025, 2026
CADILLAC ESCALADE IQ2025, 2026
CADILLAC ESCALADE IQL2026
CADILLAC LYRIQ2023, 2024, 2025, 2026
CADILLAC OPTIQ2025, 2026
CADILLAC VISTIQ2026
CADILLAC XT42024, 2025
CHEVROLET BLAZER EV2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET BRIGHTDROP 4002025, 2026 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET BRIGHTDROP 6002025, 2026 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET COLORADO2023, 2024, 2025, 2026
CHEVROLET CORVETTE2020, 2021, 2022, 2023, 2024, 2025
CHEVROLET CORVETTE CONVERTIBLE2026 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET CORVETTE COUPE2026 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET EQUINOX2026
CHEVROLET EQUINOX EV2024, 2025, 2026 (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)
CHEVROLET SUBURBAN 15002025, 2026 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TAHOE2025, 2026
GMC CANYON2023, 2024, 2025, 2026
GMC HUMMER EV PICKUP2022, 2023, 2024, 2025, 2026
GMC HUMMER EV SUV2024, 2025, 2026
GMC SIERRA 15002024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it)
GMC TERRAIN2026
GMC YUKON2025, 2026
GMC YUKON XL2025, 2026

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