For 1990-2009 cars

# CARB GASKET AND INSULATOR ASSY CORRECTS VACUUM LEAKS

A NEW CARBURETOR GASKET AND INSULATOR ASSEMBLY FOR THE 4.1L ENGINE HAS BEEN RELEASED. THE NEW GASKET AND INSULATOR ASSEMBLY HAS A BETTER GASKET ADHESION TO THE INSULATOR ASSEMBLY, WHICH WILL ALLEVIATE VACUUM LEAKS BETWEEN THE CARBURETOR AND INTAKE MANIFOLD. ALL OLD GM PARTS DEPARTMENT 4.1L CARBURETOR GASKET AND INSULATOR ASSEMBLIES HAVE BEEN SCRAPPED AND REPLACED WITH THE NEW ASSEMBLIES UNDER THE NEW PART NUMBER 25516626. THE NEW CARBURETOR GASKET AND INSULATOR ASSEMBLY HAS A 'RAISED BAR' ADDED TO THE INSULATOR TO IDENTIFY THE REVISED PART. SEE ILLUSTRATION.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.