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Service bulletins for the 2003 Isuzu Ascender

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.

173 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
07040032008-01-19. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). ERRATIC SPEEDOMETER OPERATION OR SPEEDOMETER NEEDLE SHAKES ABOVE 60 MPH. *NJ
07050042007-09-12. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. INFORMATION ON 2-3 UP-SHIFT OR 3-2 DOWNSHIFT CLUNK NOISE IS HEARD. *KB
06050042007-02-22. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. DIAGNOSTIC TROUBLE CODE (DTC) P0757 SET, MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATED, POOR PERFORMANCE OF TRANSMISSION, TRANSMISSION SLIPPING. *KB
06050052006-09-19. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. INFORMATION REGARDING AUTOMATIC TRANSMISSION SHIFT LOCK CONTROL FUNCTION. *TT
05050132006-04-27. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. DIAGNOSTIC TIPS FOR AUTOMATIC TRANSMISSION DTC P0756. *TT
05050072006-01-19. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. DIAGNOSTIC TROUBLE CODE (DTC) P0757 SET, MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATED, POOR PERFORMANCE OF TRANSMISSION, TRANSMISSION SLIPPING. *TT
0505S0062006-01-10. Service bulletin. POWER TRAIN. MALFUNCTION INDICATOR LAMP (MIL) ON, TRANSMISSION STUCK IN SECOND OR THIRD GEAR, INSTRUMENT CLUSTER INOPERATIVE (VERIFY AND REPAIR SOURCE OF VOLTAGE LOSS IN TRANSMISSION SOLENOID POWER SUPPLY CIRCUIT. *JB
0505S0122006-01-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 4L60 AUTOMATIC TRANSMISSION DIAGNOSTIC INFORMATION ON HARSH 1-2 UPSHIFT. *JB
005050062006-01-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. MALFUNCTION INDICATOR LAMP (MIL) ON, TRANSMISSION STUCK IN SECOND OR THIRD GEAR, INSTRUMENT CLUSTER INOPERATIVE (VERIFY AND REPAIR SOURCE OF VOLTAGE LOSS IN TRANSMISSION SOLENOID POWER SUPPLY CIRCUIT). *TT
05050102005-11-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. ENGAGEMENT TIME OF ELECTRONICALLY CONTROLLED 4L60-E TRANSMISSIONS. *TT
04050122005-10-13. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. MALFUNCTION INDICATOR LAMP ON, TRANSMISSION STUCK IN THIRD GEAR, INSTRUMENT CLUSTER INOPERATIVE. *TT
04050112005-10-13. Service bulletin. POWER TRAIN. DELAYED ENGAGEMENT OF FRONT WHEELS DURING A SLIP CONDITION ON MODELS EQUIPPED WITH NEW VENTURE GEAR NVG 126 OR NVG 226 TRANSFER CASE. *TT
05050092005-09-23. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 1-2, 2-3, 3-4 SHIFT AND TORQUE CONVERTER CLUTCH (TCC) CHARACTERISTICS DURING COLD WEATHER OPERATION ON 4L60-E TRANSMISSIONS. TO INCLUDE 2006 ISUZU ASCENDER. *TT
05070022005-09-23. Service bulletin. POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT. SQUEAK, SQUEAL OR WHISTLE NOISE FROM FRONT. *TT
05050052005-09-12. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). SERVICE 4WD LIGHT ILLUMINATED, DIAGNOSTIC TROUBLE CODE (DTC) C0374 SET. *TT
05050072005-08-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). GUIDELINES FOR REPLACEMENT OF TRANSFER CASE CONTROL MODULE (TCCM). *TT
05050042005-05-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SHIFT STABILIZATION FEATURE FOR HYDRAMATIC 4L60E TRANSMISSION. *EH
05050032005-05-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. AUTOMATIC TRANSMISSION SHIFT LOCK CONTROL FUNCTION. *EH
05050022005-05-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. DIAGNOSIS OF CRACK OR BROKEN TRANSMISSION CASE. *EH
0405S0072004-11-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. DIAGNOSTIC INFORMATION ON HARSH 1-2 UPSHIFT. *NM
0405S0082004-10-19. Service bulletin. POWER TRAIN. DIAGNOSTIC INFORMATION ON DIAGNOSTIC TROUBLE CODE P0894 AND P1870. *TT
0405S0092004-10-19. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. DIAGNOSTIC TROUBLE CODE P0757 SET, SERVICE ENGINE SOON ILLUMINATED, POOR PERFORMANCE OF TRANSMISSION, TRANSMISSION SLIPPING. *TT
04050052004-07-30. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. DIAGNOSTIC TIPS FOR DIAGNOSTIC TROUBLE CODE (DTC) P0756 2-3 SHIFT VALVE PERFORMANCE. *TT
0405S0042004-07-20. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. AUTOMATIC TRANSMISSION SHIFT, ENGINE DRIVEABILITY CONCERNS OR SERVICE ENGINE SOON (SES) LIGHT ON AS A RESULT OF THE INSTALLATION OF AN AFTERMARKET REUSABLE, EXCESSIVELY OILED AIR FILTER. *TT
04050052004-07-19. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SHUDDER, ROCKING MOTION, BINDING, FEELS LIKE VEHICLE IS STUCK IN 4WD (CROW HOP) WHEN TURNING AT LOW SPEEDS. *TT

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.