1998 Buick Lesabre
Safety Recalls & Notices
4 Active Recalls
Requires attention
FUEL SYSTEM, GASOLINE:DELIVERY
Summary
ON CERTAIN PASSENGER VEHICLES EQUIPPED WITH 3800 V6 (L36) ENGINES AND CERTAIN DELPHI FUEL PRESSURE REGULATORS, THE REGULATORS HAVE A MUCH HIGHER THAN USUAL RATE OF FUEL LEAKS. A LEAK CAN ALLOW FUEL TO ENTER THE INTAKE MANIFOLD THROUGH A VACUUM LINE. IF THE ENGINE DOES NOT START WHEN CRANKED, THE FUEL FROM THE LEAKING REGULATOR AND A MISTIMED SPARK CAN CAUSE A BACKFIRE.
Potential Consequence
THE BACKFIRE CAN RUPTURE THE INTAKE MANIFOLD. THE RUPTURE OF THE INTAKE MANIFOLD CAN DISPLACE A FUEL LINE, PULLING AN INJECTOR OUT OF PLACE, AND CAUSING A FUEL LEAK AND POSSIBLE FIRE.
Remedy
DEALERS WILL INSTALL NEW FUEL PRESSURE REGULATORS WITH IMPROVED DIAPHRAGMS. THE RECALL WILL BE CONDUCTED IN PHASED MAILINGS. PHASE 1 BEGAN ON JUNE 30, 2004, AND PHASE 2 BEGAN ON SEPTEMBER 30, 2004. OWNERS SHOULD CONTACT BUICK AT 1-866-608-8080, OLDSMOBILE AT 1-800-630-6537, OR PONTIAC AT 1-800-620-7668.
Engine
Summary
On certain vehicles, a combination of a low battery condition and fuel in the upper intake manifold while the ignition key is activated at engine start could cause an elevated rate of manifold over-pressurization events. The operator may experience a loud bang / intake backfire that could rupture the intake manifold, resulting in emitting dust from under the hood and a no-start condition. If this event were to occur, and if an ignition source were present, an engine compartment fire could occur. Correction: Dealer will replace the fuel pressure regulator.
Emissions
Summary
Certain vehicles do not comply with the requirements of CMVSS 1101 - Emission Device. Vehicles were built with incorrect emission control labels. The emission control (tune up) labels have an incorrect emission vacuum hose routing schematic. Correction: Dealers will install a new vehicle emission control label on the radiator support.
Emissions
Summary
THESE VEHICLES DO NOT COMPLY WITH C.M.V.S.S. 1101 - EMISSION DEVICE. IMPROPER CALIBRATION OF THE POWERTRAIN CONTROL MODULE (PCM) CAN RESULT IN UNCONTROLLED SPARK KNOCK, SETTING AN MIL (MALFUNCTION INDICATOR LAMP), MISFIRE, ROUGH IDLE, AUDIBLE KNOCK AND/OR POSSIBLE ENGINE DAMAGE. CORRECTION: VEHICLE PCM WILL BE REFLASHED WITH NEW CALIBRATION SOFTWEAR.
Generated by Cardog • December 18, 2025
1998 Buick Lesabre
Safety Recalls & Notices
4 Active Recalls
Requires attention
