Service bulletin PIT5985K
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.
| Type | Service bulletin |
|---|---|
| NHTSA id | 11027932 |
| Published by NHTSA | 2026-02-01 |
| Manufacturer's number | PIT5985K |
| Manufacturer's date | 2026-01-27 |
| NHTSA component | UNKNOWN OR OTHER |
NHTSA's summary
This PI provides diagnostics tips to dealership techs when trying to diagnose a CAN Bus communication issue after an event like a lightning strike, battery jump started backwards, failure over the air update, etc.
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.
| BRIGHTDROP EV600 | 2022 |
|---|---|
| BRIGHTDROP ZEVO 400 | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| BRIGHTDROP ZEVO 600 | 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| BUICK ENCLAVE | 2025, 2026 |
| BUICK ENVISION | 2021, 2022, 2023, 2024, 2025, 2026 |
| CADILLAC CT4 | 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| CADILLAC CT5 | 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| CADILLAC ESCALADE | 2021, 2022, 2023, 2024, 2025, 2026 |
| CADILLAC ESCALADE ESV | 2021, 2022, 2023, 2024, 2025, 2026 |
| CADILLAC ESCALADE IQ | 2025, 2026 |
| CADILLAC ESCALADE IQL | 2026 |
| CADILLAC LYRIQ | 2023, 2024, 2025 |
| CADILLAC XT4 | 2025 |
| CHEVROLET BLAZER EV | 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET BRIGHTDROP 400 | 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET BRIGHTDROP 600 | 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET COLORADO | 2023, 2024, 2025, 2026 |
| CHEVROLET CORVETTE | 2020, 2021, 2022, 2023, 2024, 2025 |
| CHEVROLET CORVETTE CONVERTIBLE | 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET CORVETTE COUPE | 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET CORVETTE E-RAY | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET EQUINOX | 2026 |
| CHEVROLET EQUINOX EV | 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 1500 | 2022, 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 2500 | 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 3500 | 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO EV | 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SUBURBAN 1500 | 2021, 2022, 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET TAHOE | 2021, 2022, 2023, 2024, 2025, 2026 |
| CHEVROLET TRAVERSE | 2024, 2025, 2026 |
| GMC ACADIA | 2024, 2025, 2026 |
| GMC CANYON | 2023, 2024, 2025, 2026 |
| GMC HUMMER EV PICKUP | 2022, 2023, 2024, 2025, 2026 |
| GMC HUMMER EV SUV | 2024, 2025, 2026 |
| GMC SIERRA 1500 | 2022, 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 2500 | 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 3500 | 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA EV | 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| GMC YUKON | 2021, 2022, 2023, 2024, 2025, 2026 |
| GMC YUKON XL | 2021, 2022, 2023, 2024, 2025, 2026 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.