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Service bulletin PIT6393E

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 id11024438
Published by NHTSA2025-10-24
Manufacturer's numberPIT6393E
Manufacturer's date2025-10-04
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

This Preliminary Information is to inform customers to follow diagnostics if resetting, disconnecting the module did not correct it.

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 600 ELCV2024
BRIGHTDROP ZEVO 4002024 (the catalog's model; the bulletin names a series or trim of it)
BRIGHTDROP ZEVO 6002024 (the catalog's model; the bulletin names a series or trim of it)
BUICK ENCLAVE2025, 2026
BUICK ENVISION2024, 2025
CADILLAC CT52025
CADILLAC ESCALADE2025
CADILLAC ESCALADE ESV2025
CADILLAC ESCALADE IQ2025
CADILLAC LYRIQ2024, 2025
CADILLAC OPTIQ2025
CADILLAC VISTIQ2026
CADILLAC XT42024, 2025
CHEVROLET BLAZER EV2024, 2025 (the catalog's model; the bulletin names a series or trim of it)
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 COLORADO2024, 2025
CHEVROLET EQUINOX2024, 2025, 2026
CHEVROLET EQUINOX EV2024, 2025 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO EV2024, 2025 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN 15002025 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TAHOE2025
CHEVROLET TRAVERSE2024, 2025, 2026
GMC ACADIA2024, 2025, 2026
GMC CANYON2025
GMC SIERRA EV2024, 2025 (the catalog's model; the bulletin names a series or trim of it)
GMC TERRAIN2025, 2026
GMC YUKON2025
GMC YUKON XL2025

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