GM Service Manual Online
For 1990-2009 cars only

SPARK PLUG GAP SPEC. 4.1L GAP CHANGE

THE SPARK PLUGS AND GAP SPECIFIED FOR 1980 THROUGH 1982 CADILLACS EQUIPPED WITH 4.1L V-6 ENGINES ARE LISTED BELOW: YEAR: 1982 TYPE: R45TS8 GAP: .080 P/N: 5613721 YEAR: 1981 TYPE: R45TS8 GAP: .080 P/N: 5613721 YEAR: 1980 TYPE: R45TSX GAP: .060 P/N: 5613575

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.