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Service bulletins for the 1999 Chevrolet 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.

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

By type

By component

By trouble code

Bulletins, newest first
010604037B2002-02-25. Service bulletin. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP. INFORMATION REGARDING FUEL TRANSFER PUMP INOPERATIVE. *YH
0104200052002-02-15. Service bulletin. POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT:SEAL. INFORMATION REGARDING CORRECT VEHICLE APPLICATION FOR EATON. 1990-2002 CHEVROLET AND GMC C-SERIES CONVENTIONAL AND T-SERIES TILT CAB MEDIUM DUTY MODELS. *YH
0106020112002-02-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. INFORMATION REGARDING CHEVROLET AND GMC 6-7F MEDIUM DUTY TILT CAB MODELS WITH ISUZU DIESEL ENGINE, ENGINE OVERHEATS, TEMPERATURE GAUGE READS HOT, AUDIBLE WARNING ALARM SOUNDS, AND CHECK GAUGE LAMP ON. *YH
0108630012001-11-19. Service bulletin. STRUCTURE:BODY:HOOD:HINGE AND ATTACHMENTS. SUBJECT ON HOOD HINGE RATTLE COMING FROM EITHER OR BOTH FRONT CORNERS OF THE INSTRUMENT PANEL NEAR THE HOOD HINGE AREAS FOR 1995 - 2002 PICKUP AND UTILITY MODELS. *ET
0106040392001-11-01. Service bulletin. ELECTRICAL SYSTEM. SOME VEHICLES MAY EXHIBIT A SERVICE ENGINE SOON LAMP ON, MALFUNCTION INDICATOR LAMP ILLUMINATES INTERMITTENTLY, ANTI-LOCK BRAKE SYSTEM WARNING LIGHT ILLUMINATED, DIAGNOSTIC TROUBLE CODES SET, AND / OR BLOWN FUSES. *TT
0106040372001-10-29. Service bulletin. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP. SOME CUSTOMERS MAY COMMENT ON INOPERATIVE SECONDARY FUEL TANK TRANSFER PUMPS. *TT
0106040372001-10-29. Service bulletin. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP. TECHNICAL SERVICE BULLETIN REGARDING FUEL TRANSFER PUMP INOPERATIVE. *TT
1602012001-05-21. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. THIS MESSAGE CONCERNS CERTAIN 1997 THROUGH 2001 MEDIUM DUTY TRUCKS WITH SPICER SEVEN SPEED MANUAL TRANSMISSIONS EXHIBITING HEAVY VIBRATION THAT INCREASES WITH SPEED AND / OR AN OIL LEAK AND / OR A CRACKED ENGINE BLOCK. *TT
0106040092001-05-17. Service bulletin. UNKNOWN OR OTHER. ON CERTAIN MODELS INCLUDING MY2000 - 2001 CHEVROLET AND GMC WT5500 SERIES, THE SERVICE ENGINE SOON (SES) INDICATOR IS ILLUMINATED WITH DIAGNOSTIC TROUBLE CODE 0226 SET. *TT
000762001-03-26. Service bulletin. SERVICE BRAKES, AIR:ANTILOCK. SOME VEHICLES EQUIPPED WITH BENDIX ABS AIR BRAKES HAVE A CONDITION IN WHICH THE VEHICLE MAY HAVE UNWANTED TEMPORARY ABS ACTIVATION AT LOW SPEEDS. *TT
008630082001-03-26. Service bulletin. STRUCTURE:BODY. SUBJECT REGARDING MISALIGNMENT OF AIR INTAKE DUCT WHEN CLOSING CAB. *TT
001482001-02-25. Service bulletin. UNKNOWN OR OTHER. SERVICE ENGINE SOON LIGHT, MISFIRE, ROUGH IDLE, OR HARD START DUE TO A DEPOSIT BUILD-UP ON THE SEQUENTIAL CENTRAL PORT FUEL INJECTOR (SCPI) POPPET VALVE(S). THE DEPOSIT BUILD-UP MAY CAUSE INJECTOR POPPETS TO STICK CLOSED. *TT
8665032000-12-27. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. SOME VEHICLES MAY SET A FALSE OBD II WITH DIAGNOSTIC TROUBLE CODE P1404. *TT
0006040142000-10-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME CUSTOMERS MAY COMMENT ON HARD, NO, OR SLOW START, BACKFIRE OR KICKBACK DURING CRANK / START, GRINDING OR UNUSUAL NOISES DURING CRANK, DIAGNOSTIC TROUBLE CODE P0338. *TT
99066B2000-07-25. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME OWNERS MAY EXPERIENCE A SERVICE ENGINE SOON LIGHT, MISFIRE, ROUGH IDLE OR HARD START. **MR
0008630022000-05-31. Service bulletin. STRUCTURE:BODY. SOME DRIVERS MAY COMMENT ON AN IMPROPER FIT / APPEARANCE BETWEEN THE CAB AND THE FRONT FENDER EXTENSIONS. *TT
9909400042000-04-07. Service bulletin. SEATS. GENERAL MOTORS BEGAN PROVIDING CHILD RESTRAIN SEAT TOP TETHER HARDWARE PACKAGES TO CUSTOMERS IN THE UNITED STATES WHO REQUESTED THEM. *TT
0006040032000-04-06. Service bulletin. VEHICLE SPEED CONTROL:CRUISE CONTROL. SOME CUSTOMERS MAY COMMENT ON ROUGH IDLE AFTER START UP, AND / OR A SERVICE ENGINE SOON (SES) LIGHT ILLUMINATED. *TT
990782000-04-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. CERTAIN VEHICLES EQUIPPED WITH DIESEL ENGINES MAY EXHIBIT ENGINE AIR INDUCTION CONTAMINATION. *TT
9906010202000-01-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME CUSTOMERS MAY COMMENT ABOUT A KNOCKING OR GRINDING NOISE WITH THE ENGINE RUNNING. *TT
9906010202000-01-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. VEHICLES MAY EXHIBIT A KNOCKING OR GRINDING NOISE WITH THE ENGINE RUNNING. *TT
9908500192000-01-11. Service bulletin. SEATS:FRONT ASSEMBLY:POWER ADJUST. CONCERNS THAT THE DRIVER OR PASSENGER FRONT POWER SEAT FORWARD AND REARWARD FUNCTION IS INOPERATIVE. *TT
9907290041999-09-29. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. SOME MEDIUM DUTY MODELS EQUIPPED WITH MANUAL TRANSMISSIONS MAY EXHIBIT A HIGH SHIFT EFFORT OR HARD SHIFTING CONDITION. *TT
9908500141999-09-29. Service bulletin. SEATS:FRONT ASSEMBLY:POWER ADJUST. CONCERNS WITH DRIVER / PASSENGER SEAT ADJUSTER SWITCH BEZEL AT SEAT WILL NOT STAY FASTENED. *TT
9907300131999-09-29. Service bulletin. UNKNOWN OR OTHER. SOME CUSTOMERS MAY COMMENT ABOUT THE SERVICE ENGINE SOON LIGHT ILLUMINATING. *TT

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