For 1990-2009 cars

# CYLINDER HEAD GASKET INFORMATION

#### NOTICE: THIS BULLETIN SUPERCEDES THE ORIGINAL BULLETIN 82-T-84 TO CORRECT PART NUMBER 25515889. PLEASE DISCARD ORIGINAL BULLETIN AND REPLACE IT WITH THIS ONE. A NEW HEAD GASKET, WITH IMPROVED SEALING CAPABILITIES, IS AVAILABLE FROM WDDGM UNDER PART NUMBER 25515792. IT MUST BE INSTALLED WITHOUT THE USE OF ADDITIONAL SEALER OR ADHESIVES. THIS GASKET, BLUE IN COLOR, WILL ALSO BE INCLUDED IN RELATED ENGINE AND CYLINDER HEAD OVERHAUL GASKET SETS ORDERED IN THE FUTURE (PART NUMBERS 25515887 AND 25515889 RESPECTIVELY). AT GASKET INSTALLATION, THE CYLINDER HEAD BOLTS ARE TO BE TORQUED TO 108 N.M (80 FT. LBS.) IN THE SEQUENCE SHOWN ON PAGE 6A1-5 OF THE 1982 SERVICE MANUAL.

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.