Service bulletins for the 1998 GMC T-Series
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.
70 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Steering are shown. Show all
| 020232004 | 2002-04-02. Service bulletin. STEERING:HYDRAULIC POWER ASSIST SYSTEM. SUBJECT REGARDING STEERING GEAR GREASE SEEPAGE FROM AROUND SECTOR (OUTPUT) SHAFT (INSTALL NEW SECTOR (OUTPUT) SHAFT SEALS).*JG |
|---|---|
| 990232004A | 1999-08-26. Service bulletin. STEERING:HYDRAULIC POWER ASSIST:PUMP. SOME OWNERS / OPERATORS OF MEDIUM DUTY MODELS MAY COMMEND ABOUT WATER ENTERING THE POWER STEERING RESERVOIR AND CONTAMINATING THE POWER STEERING FLUID. *TT |
| 990232004 | 1999-08-06. Service bulletin. STEERING:HYDRAULIC POWER ASSIST:PUMP. SOME MEDIUM DUTY MODELS MAY HAVE WATER INTRUSION INTO THE POWER STEERING RESERVOIR. *TT |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.