REVISED CYLINDER HEAD GASKET IMPROVED SEALING. GMC Truck S15 Pickup - 4WD 1988

For 1990-2009 cars

# REVISED CYLINDER HEAD GASKET IMPROVED SEALING

#### VEHICLES AFFECTED: 1987-89 B,F, G CARS,C/K/R/V,G,P,S,T,M, W/5.0L,4.3L,5.7L AND C5,C6 W/5.7L

THIS BULLETIN HAS BEEN REVISED TO TO ADD THE 1987 -1989 S/T, AND M MODELS, AND THE 4.3L ENGINE APPLICATION AND PART NUMBER.

A cylinder head gasket with improved sealing characteristics is now available for service use on all 4.3L, 5.0L and 5.7L engine applications. The applicable part numbers are listed below:

Application Cylinder Head Gasket P/N ----------- ------------------------ 4.3L Engines 10105110

5.0L Engines 10105115

5.7L Engines 10105117

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.