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Service bulletins for the 2003 Buick Regal

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.

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

By type

By component

By trouble code

Bulletins, newest first
01391A2003-11-24. Service bulletin. ELECTRICAL SYSTEM. INTERMITTENT INSTRUMENT PANEL CLUSTER (IPC) INOPERATIVE (FUEL GAUGE OR PRNDL), ENGINE NO CRANK OR START WITH THE SECURITY LIGHT ON, CANNOT REMOVE THE TRANSAXLE SELECTOR LEVER FROM THE PARK POSITION; OR SES, ABS, OR TCS WARNING LIGHTS ON. *TT
00704A2003-11-22. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. THE 4T65E AUTOMATIC TRANSMISSION MAY EXHIBIT A CONDITION OF A HARSH GARAGE SHIFT INTO REVERSE OR DRIVE ON A COLD START. *TT
014372003-11-21. Service bulletin. ELECTRICAL SYSTEM. ANTI-LOCK BRAKING SYSTEM (ABS) OR TRACTION CONTROL SYSTEM (TCS) LIGHT ON WITH DIAGNOSTIC TROUBLE CODES (DTC)S. *TT
013472003-11-20. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 3.8L L37 L67 ENGINE RECOMMENDED SAE VISCOSITY GRADE ENGINE OILS. *TT
013382003-11-19. Service bulletin. STRUCTURE:BODY. REGAL LOWER ROCKER MOLDING AT QUARTER PANEL AVAILABILITY. SERVICE VME. *TT
0807032003-11-05. Service bulletin. STRUCTURE:BODY. THE RIGHT PIECE OF BRIGHT TRIM ATTACHED TO THE LOWER ROCKER MOLDING IN FRONT OF THE REAR TIRE RIGHT SIDE HAS SEEN A FREQUENT FAILURE. *TT
0708032003-11-03. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. THE VME MESSAGE IS TO PROVIDE INFORMATION ABOUT A NEW PRODUCT FIELD ACTION REGARDING A CUSTOMER SATISFACTION PROGRAM FOR AN ENGINE COOLANT LEAK. THE ENGINE COOLANT MAY LEAK AT THE UPPER INTAKE MANIFOLD THROTTLE BODY GASKET OR AT THE UPPER INTAKE MANIFOLD TO LOWER INTAKE MANIFOLD GASKET. *TT
0602032003-10-28. Service bulletin. LATCHES/LOCKS/LINKAGES. CENTER CONSOLE AND/OR ARMREST STORAGE LID WILL NOT REMAIN CLOSED DUE TO A BROKEN LATCH. BOTH LATCHES ARE SERVICE SEPARATELY AND AVAILABLE THROUGH GM SERVICE PARTS. *TT
0508032003-10-27. Service bulletin. POWER TRAIN. WHINE NOISE CONDITION HEARD IN DRIVE OR REVERSE AND NOT PRESENT IN PARK OR NEUTRAL. *TT
030342003-10-20. Service bulletin. ENGINE AND ENGINE COOLING. ENGINE COOLANT MAY LEAK AT THE UPPER INTAKE MANIFOLD THROTTLE BODY GASKET, OR AT THE UPPER INTAKE MANIFOLD TO LOWER INTAKE MANIFOLD TO LOWER INTAKE MANIFOLD GASKET. THIS CONDITION MAY RESULT IN A LOW ENGINE COOLANT LEVEL AND HIGHER ENGINE OPERATING TEMPERATURES. *TT
0308670042003-09-30. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. PARTS AVAILABILITY FOR SUNROOF REPAIRS. *TT
020730039C2003-09-26. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. FIRM TRANSMISSION SHIFTS, SHUDDER/CHUGGLE, TRANSMISSION WON'T DOWNSHIFT ON DECELERATION, SERVICE ENGINE SOON LIGHT ILLUMINATED, DIAGNOSTIC TROUBLE CODE P0742 SET. *TT
010846002C2003-09-26. Service bulletin. EQUIPMENT. PROGRAMMING OF REPLACEMENT ONSTAR VEHICLE COMMUNICATION AND INTERFACE MODULES (VCIM). *TT
0212032003-09-05. Service bulletin. STRUCTURE:BODY:ROOF AND PILLARS. SAGGING OR WARPED HEADLINER APPEARANCE BEHIND THE SUNROOF MODULE IS A NORMAL CONDITION. *TT
0306010162003-08-26. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. LOSS OF COOLANT, MILKY COLORED OIL. *TT
0306040302003-08-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. MULTIPLE DRIVEABILITY SYMPTOMS OF LONG OR HARD STARTS, CHUGGLE, ROUGH IDLE AND LIGHT OR INTERMITTENT MISFIRE DUE TO CLOGGED FUEL INJECTORS. *TT
03081100022003-04-15. Service bulletin. STRUCTURE:BODY. SUN VISORS MAY NOT STAY IN INTENDED POSITION. *TT
0308440052003-04-15. Service bulletin. ELECTRICAL SYSTEM. POOR RADIO RECEPTION OR RADIO STATIC/ INCREASED INTERFERENCE WITH REAR WINDOW DEFOGGER ON OR SOME REAR WINDOW DEFOGGER GRIDS MAY BE INOPERATIVE. *TT
020730039A2003-03-31. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. FIRM TRANSMISSION SHIFTS, SHUDDER/CHUGGLE, TRANSMISSION WON'T DOWNSHIFT ON DECELERATION, SERVICE ENGINE SOON LIGHT ILLUMINATED, DIAGNOSTIC TROUBLE CODE P0742 SET. *TT
0208500102003-03-28. Service bulletin. SEATS:FRONT ASSEMBLY:POWER ADJUST. POWER SEAT ADJUSTER INOPERATIVE. *TT
0207300392003-02-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. INFORMATION TO DEALERS REGARDING SERVICE BULLETIN 020730039 - FIRM TRANSMISSION SHIFTS, SHUDDER / CHUGGLE, TRANSMISSION WON'T DOWNSHIFT ON DECELERATION, SERVICE ENGINE SOON LIGHT ILLUMINATED, DIAGNOSTIC TROUBLE CODE (DTC) P0742 SET. *TT
0207300392003-02-14. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. FIRM TRANSMISSION SHIFTS, SHUDDER / CHUGGLE, TRANSMISSION WON'T DOWNSHIFT ON DECELERATION, SERVICE ENGINE SOON LIGHT ILLUMINATED, DIAGNOSTIC TROUBLE CODE (DTC) P0742 SET. *TT
0207300362003-02-14. Service bulletin. POWER TRAIN. NEW INPUT AND THIRD PAWL CLUTCH ASSEMBLY CHANGES FOR THE 4T65-E TRANSMISSION FOR 2003 MODEL YEAR. *TT
0209400052003-02-14. Service bulletin. SEAT BELTS:REAR/OTHER. AVAILABILITY OF REAR SEAT SHOULDER BELT COMFORT GUIDES. *TT
020730022A2002-10-10. Service bulletin. UNKNOWN OR OTHER. SERVICE ENGINE SOON LIGHT ON WITH DIAGNOSTIC TROUBLE CODES P0716 AND / OR P0717, P0730, P0753, P0758, P1860, P1887 OR OTHER MISCELLANEOUS TRANSMISSION TROUBLE CODES SET. *TT

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