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: Automatic transmission are shown. Show all
| 020730017 | 2002-10-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. CONCERN WITH NO SHIFT, HARSH SHIFT, NO ENGAGEMENT, TRANSMISSION IN DEFAULT, CHECK TRANSMISSION WARNING INDICATOR ILLUMINATED, RANGE INHIBITED INDICATOR ILLUMINATED, TRANSMISSION DIAGNOSTIC TROUBLE CODES SET ON F-MODEL MEDIUM DUTY TILT CAB MODELS. *TT |
|---|---|
| 877169 | 2000-12-27. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). INFORMATION PERTAINING TO NEW TRANSMISSION CALIBRATIONS. *TT |
| 867117 | 2000-12-27. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. BRIEF INFORMATION REGARDING RUSTY TRANSMISSION FLUID LEVEL INDICATOR. *TT |
| 837110A | 2000-04-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. PARK/NEUTRAL POSITION SWITCH CONNECTOR CANNOT BE REMOVED. YD |
| 990730004A | 2000-01-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. A CONDITION WITH A RUSTY TRANSMISSION FLUID LEVEL INDICATOR / TRANSMISSION OIL FILLER TUBE. *TT |
| 867404 | 1999-03-08. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. COMMENTS ABOUT A LOW TRANSMISSION FLUID LEVEL OR THAT THE TRANSFER CASE FLUID IS OVERFILLED. *YC |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.