Service bulletin PIT6554
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 | 11038164 |
| Published by NHTSA | 2026-10-06 |
| Manufacturer's number | PIT6554 |
| Manufacturer's date | 2026-10-02 |
| NHTSA component | UNKNOWN OR OTHER |
NHTSA's summary
This preliminary information is to help technicians decide if the DTC needs to be diagnosed if relating to the concern and if it is not, the DTC can be ignored.
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.
| CADILLAC ESCALADE | 2026, 2027 |
|---|---|
| CADILLAC ESCALADE ESV | 2026, 2027 |
| CADILLAC ESCALADE IQ | 2027 |
| CADILLAC ESCALADE IQL | 2027 |
| CHEVROLET SILVERADO EV | 2027 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SUBURBAN 1500 | 2026, 2027 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET TAHOE | 2026, 2027 |
| GMC HUMMER EV PICKUP | 2027 |
| GMC HUMMER EV SUV | 2027 |
| GMC SIERRA EV | 2027 (the catalog's model; the bulletin names a series or trim of it) |
| GMC YUKON | 2026, 2027 |
| GMC YUKON XL | 2026, 2027 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.