Service bulletins for the 1999 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.
53 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
| 040601 | 2001-10-30. Service bulletin. UNKNOWN OR OTHER. INFORMATION REGARDING REPAIR VERSUS REPLACE GUIDELINES FOR VEHICLES WITH MANUAL TRANSMISSIONS. *SLC |
|---|---|
| 010604037 | 2001-10-29. Service bulletin. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP. TECHNICAL SERVICE BULLETIN REGARDING FUEL TRANSFER PUMP INOPERATIVE. *TT |
| 160201 | 2001-05-21. 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 |
| 010604009 | 2001-05-17. 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 |
| 00076 | 2001-03-26. 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 |
| 00863008 | 2001-03-26. Service bulletin. STRUCTURE:BODY. SUBJECT REGARDING MISALIGNMENT OF AIR INTAKE DUCT WHEN CLOSING CAB. *TT |
| 00148 | 2001-02-25. 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 |
| 866503 | 2000-12-27. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. SOME VEHICLES MAY SET A FALSE OBD II WITH DIAGNOSTIC TROUBLE CODE P1404. *TT |
| 000851001 | 2000-12-05. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR. SOME CUSTOMERS MAY COMMENT THAT THE BLACK PLASTIC HOUSING AROUND THE OUTSIDE REAR VIEW MIRROR TURNS CHALKY OR IS DULL IN COLOR. *TT |
| 000604014 | 2000-10-11. 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 |
| 99066B | 2000-07-25. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME OWNERS MAY EXPERIENCE A SERVICE ENGINE SOON LIGHT, MISFIRE, ROUGH IDLE OR HARD START. **MR |
| 000863002 | 2000-05-31. Service bulletin. STRUCTURE:BODY. SOME DRIVERS MAY COMMENT ON AN IMPROPER FIT / APPEARANCE BETWEEN THE CAB AND THE FRONT FENDER EXTENSIONS. *TT |
| 990940004 | 2000-04-07. Service bulletin. SEATS. GENERAL MOTORS BEGAN PROVIDING CHILD RESTRAIN SEAT TOP TETHER HARDWARE PACKAGES TO CUSTOMERS IN THE UNITED STATES WHO REQUESTED THEM. *TT |
| 000604003 | 2000-04-06. 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 |
| 99078 | 2000-04-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. CERTAIN VEHICLES EQUIPPED WITH DIESEL ENGINES MAY EXHIBIT ENGINE AIR INDUCTION CONTAMINATION. *TT |
| 990601020 | 2000-01-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME CUSTOMERS MAY COMMENT ABOUT A KNOCKING OR GRINDING NOISE WITH THE ENGINE RUNNING. *TT |
| 990601020 | 2000-01-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. VEHICLES MAY EXHIBIT A KNOCKING OR GRINDING NOISE WITH THE ENGINE RUNNING. *TT |
| 990850019 | 2000-01-11. Service bulletin. SEATS:FRONT ASSEMBLY:POWER ADJUST. CONCERNS THAT THE DRIVER OR PASSENGER FRONT POWER SEAT FORWARD AND REARWARD FUNCTION IS INOPERATIVE. *TT |
| 990729004 | 1999-09-29. 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 |
| 990850014 | 1999-09-29. Service bulletin. SEATS:FRONT ASSEMBLY:POWER ADJUST. CONCERNS WITH DRIVER / PASSENGER SEAT ADJUSTER SWITCH BEZEL AT SEAT WILL NOT STAY FASTENED. *TT |
| 990730013 | 1999-09-29. Service bulletin. UNKNOWN OR OTHER. SOME CUSTOMERS MAY COMMENT ABOUT THE SERVICE ENGINE SOON LIGHT ILLUMINATING. *TT |
| 990235001 | 1999-08-27. Service bulletin. STEERING: STEERING WHEEL/HANDLE BAR. CUSTOMERS MAY COMMENT ABOUT A SQUEAK NOISE COMING FROM THE STEERING COLUMN WHILE TURNING THE STEERING WHEEL. *TT |
| 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 |
| 990421003 | 1999-08-06. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). SOME OWNERS MAY COMMENT ABOUT A SLIPPING TYPE CONDITION AT THE FRONT WHEELS WHILE THE VEHICLE IS IN FOUR WHEEL DRIVE (4WD). *TT |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.