DIESEL CYLINDER HEAD BOLTS RE-USE INFORMATION

The Torx drive cylinder head bolt, P/N 22515533, is used in three locations on each cylinder head and is installed under the pipe plug as shown in the illustration below. Some of these bolts may have a washer face thickness of approximately 2.0mm (.080 in.). Refer to illustration. If repairs are being made to an engine that require the removal of these bolts do not reuse them unless the washer face thickness is a minimum of 2.8mm (.112 in.).

Dealers should discard any bolts that do not meet the minimum thickness specification. Bolts with the thicker washer face are available from WDDGM under the same part number (22515533).

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.