Service bulletins for the 1999 Isuzu NPR
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.
37 on file from NHTSA, as of 2026-10-19.
By type
By component
Only bulletins with component: Transmission and driveline are shown. Show all
| 040730008 | 2004-08-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. AISIN AUTOMATIC TRANSMISSION FLUID SERVICE REMINDER. 2005 ISUZU NPR/NQR INCLUDED. *TT |
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| 030730060 | 2004-03-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. AUTOMATIC TRANSMISSION OIL COOLER FLUSHING ON CERTAIN MEDIUM DUTY TILT CAB MODELS AND COMMERCIAL MODELS INCLUDING MODEL YEAR 2004. *TT |
| 030730050 | 2004-01-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. APPROVED AISIN AUTOMATIC TRANSMISSION ON-VEHICLE REPAIRS. 2004 MODELS INCLUDED. *TT |
| 030730035 | 2003-12-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. REPLACEMENT OF OUTPUT FLANGE NUT WHEN SERVICING TRANSMISSION. ALSO INCLUDES 2004 MODELS. *TT |
| 020730025B | 2003-10-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. HARSH SHIFTING, DELAYED UPSHIFTS WITH POSSIBLE CHECK TRANS LAMP ILLUMINATED, POSSIBLE DIAGNOSTIC TROUBLE CODE (DTC) 21 SET. TO INCLUDE 2004 MODELS. *TT |
| 030730015 | 2003-08-29. Service bulletin. POWER TRAIN. RELEASE OF NEW TOOLS FOR SERVICE: J 37228 - OIL PAN SEAL CUTTER, J 41736 - INSTALLER (REAR OUTPUT SHAFT SEAL) AND DT 46717 - REAR OUTPUT SHAFT SEAL REMOVER. *TT |
| 020730025 | 2002-10-16. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SUBJECT REGARDING HARSH SHIFTING, DELAYED UPSHIFTS, POSSIBLE CHECK TRANS LAMP ILLUMINATED, POSSIBLE DIAGNOSTIC TROUBLE CODE 21 STORED IN THE TRANSMISSION CONTROL MODULE (TCM) MEMORY. *TT |
| 020730025A | 2002-10-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. HARSH SHIFTING, DELAYED UPSHIFTS, POSSIBLE CHECK TRANS LAMP ILLUMINATED, POSSIBLE DIAGNOSTIC TROUBLE CODE 21 STORED IN TCM MEMORY. *TT |
| 0105C004 | 2002-02-25. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. INFORMATION REGARDING AUTOMATIC TRANSMISSION OVERHEAT. *YD |
| SB0105C003 | 2001-10-16. Service bulletin. POWER TRAIN. SOME CUSTOMERS MAY COMMENT ON INOPERATIVE SPEEDOMETER. *TT |
| SB9905C004 | 2000-01-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. VEHICLES EQUIPPED WITH AISIN AUTOMATIC TRANSMISSIONS MAY EXHIBIT A TCM DTC 37. *TT |
| SB9905C002 | 1999-08-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. INFORMATION REGARDING THE AISIN AUTOMATIC TRANSMISSION DIAGNOSTIC / CORE FORM. *TT |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.