For 1990-2009 cars

# ENGINE ROUGH,SURGE,MISFIRE CODE 43 DISTRIBUTOR SHAFT P/N

#### Models Affected: 1987 GRAND PRIX MODELS WITH LG4 ENGINES 1987 SAFARI WAGON WITH LG4 ENGINES AND 1987-1988 FIREBIRD MODELS WITH LG4, LB9 OR L98 ENGINES

This butletin supersedes bulletin 87-6G-56 dated 8/87 which should be discarded. This bulletin is being revised to include symptoms of surge, misfire and/or code 43.

Some vehicles equipped with 5.OL and 5.7L engines built with distributor, P/N 1103698, may exhibit a rough running engine condition, surge, misfire and/or Code 43. This condition may be the result of oil ascending the distributor shaft and accumulating inside the distributor cap.

If oil is found inside of the distributor cap, wipe the distributor cap, module and distributor base clean with a soft cloth and replace the distributor mainshaft assembly with P/N 10467353 per service procedures in section 6D4 of the appropriate Service Manual.

Parts are currently available from GMSPO.

Use applicable labor time and operation number.

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.