Service bulletin PIT6459A
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 | 11027597 |
| Published by NHTSA | 2026-01-13 |
| Manufacturer's number | PIT6459A |
| Manufacturer's date | 2026-01-05 |
| NHTSA component | UNKNOWN OR OTHER |
NHTSA's summary
This PI communicates an issue where the Brake System Control Module DTC: U0028-88 and U0037-88 diagnostics are backwards and follow the diagnostic procedure for U0037 if U0028 is set and vice versa.
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.
Trouble codes named
U0028, U0037
| CADILLAC ESCALADE | 2026 |
|---|---|
| CADILLAC ESCALADE ESV | 2026 |
| CHEVROLET SILVERADO EV | 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SUBURBAN 1500 | 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET TAHOE | 2026 |
| GMC SIERRA EV | 2026 (the catalog's model; the bulletin names a series or trim of it) |
| GMC YUKON | 2026 |
| GMC YUKON XL | 2026 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.