Service bulletins for the 1989 Porsche 911
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.
90 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Brakes are shown. Show all
| No. 1801.4 | 2022-04-05. Service bulletin. SERVICE BRAKES. Advanced technical information for a brake squeal. |
|---|---|
| ATIALL41605 | 2021-06-28. Service bulletin. EQUIPMENT; SERVICE BRAKES. Understanding and addressing brake squeal complaints. |
| GRP4/9310 | 1995-11-01. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS. BRAKE VIBRATION DAMPER APPLICATION - NEW DAMPING PLATE WITH STEEL CLIP. *TW |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.