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
Only bulletins with component: Engine are shown. Show all
| 01347 | 2003-11-20. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 3.8L L37 L67 ENGINE RECOMMENDED SAE VISCOSITY GRADE ENGINE OILS. *TT |
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| 070803 | 2003-11-03. 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 |
| 03034 | 2003-10-20. 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 |
| 030601016 | 2003-08-26. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. LOSS OF COOLANT, MILKY COLORED OIL. *TT |
| 030604030 | 2003-08-15. 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 |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.