SPARK PLUG BOOT DAMAGED REMOVAL PROCEDURE

Subject: SPARK PLUG BOOTS MAY BE DAMAGED BY MISHANDLING (INFORMATION)

Models Affected: 1991 GRAND PRIX WITH 3.4L (VIN CODE X) V-6

The spark plug boots on the 1991 Grand Prix models with the 3.4L (VIN Code X) engine (see Figure 4, page 6D4-7 of the Service Manual) use a "T" handle design. They are designed to reach into the head, and to be easily removed without tools. Because of tolerance stack-up conditions, the boot may be lower in the head than it should be, making it difficult to remove. The boot is made of plastic, which may break if pried with a screwdriver.

DO NOT pry on one side of the "T" with a screwdriver to remove it. The boot can usually be removed by hand by twisting to loosen it, then pulling out. If the "T" is too low to allow a good grip, pliers may be used if handled carefully, or use TWO screwdrivers to apply pressure to both sides of the "T" handle at the same time.

In addition, care should be used when installing the boot, to avoid tearing it. Make sure that the boot is correctly located over the spark plug end before applying pressure to seat the boot.

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.