NHTSA Campaign Id 04V090000; Date: Feb. 24, 2004
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.
1998 Buick Lesabre; 1999 Buick Lesabre; 2000 Buick Lesabre; 1998 Buick Park Avenue; 1999 Buick Park Avenue; 2000 Buick Park Avenue; 2000 Chevrolet Impala; 2000 Chevrolet Monte Carlo; 1998 Oldsmobile 88; 1999 Oldsmobile 88; 1998 Pontiac Bonneville; 1999 Pontiac Bonneville; 2000 Pontiac Bonneville
Component: Fuel System, Gasoline:delivery
Manufactured by: General Motors Corp.
Affected Units:: 910,873
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.
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.
Gm recall no. 03054b. See campaign 03v-473 for additional units. Customers can also contact the national highway traffic safety administration's auto safety hotline at 1-888-dash-2-dot (1-888-327-4236).
Date Owners notified by Manufacturer: Jun 30, 2004
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