The following cylinder head gaskets can be used on all 6.2L diesel engines:
P/N Stamped On Gasket Vendor Description ---------- ------ ----------- 14066260 Victor Beaded With Green Silicon
14066246 Fel-Pro Beaded With Orange Silicon
These two (2) gaskets are completely interchangeable and can be used on light duty (C) or heavy duty (J) engines.
WDDGM purchases both gaskets, therefore, you may receive either gasket when ordering a gasket kit or individual gasket.
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.