USE GASKET FOR ROCKER ARM COVER INSTEAD OF RTV

VEHICLES AFFECTED: 1980-90 A/F/N/P/X CARS AND S/T/M TRUCK W/2.5L

A composite cork/rubber rocker arm cover gasket (P/N 10101791) is available for service applications. The use of this gasket is recommended in lieu of RTV sealant.

The features of the gasket include:

Ease of installation Eliminates RTV sealant curing time factor Less sensitive to sealing surface contamination, e.g. dirt, oil Remains in place during installation Compression limiters in the gasket avoid excess gasket crush loads due to over-torquing the fasteners

Even though the gasket is less sensitive to surface contamination, it is recommended that the sealing surfaces be as clean as possible to assure a reliable seal.

Inspect the rocker arm cover for any bent or distorted flanges. If the flanges are damaged, replace the cover with a new like part.

Remove the protective paper from the gasket. Place the sticky side of the gasket onto the rocker arm cover.

IMPORTANT: IT IS ESSENTIAL THAT THE PROTECTIVE PAPER BE REMOVED PRIOR TO GASKET INSTALLATION FOR LEAK PREVENTION.

Install the rocker arm cover onto the cylinder head and torque the cover bolts to 5 N.m (45 in/lbs.).

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.