Service bulletin PIT6505
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 | 11031515 |
| Published by NHTSA | 2026-04-23 |
| Manufacturer's number | PIT6505 |
| Manufacturer's date | 2026-04-16 |
| NHTSA component | UNKNOWN OR OTHER |
NHTSA's summary
This preliminary information communicates an issue with an SES MIL DTC P2B87 and/or P2B86 cause by the Aux heater coolant pump have an unwanted oring stuck in the pump. Dealers are to remove oring and reinstall pump.
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
P2B86, P2B87
| CADILLAC ESCALADE | 2024, 2025, 2026 |
|---|---|
| CADILLAC ESCALADE ESV | 2024, 2025, 2026 |
| CHEVROLET SUBURBAN | 2024 |
| CHEVROLET SUBURBAN 1500 | 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET TAHOE | 2024, 2025, 2026 |
| GMC YUKON | 2024, 2025, 2026 |
| GMC YUKON XL | 2024, 2025, 2026 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.