For 1990-2009 cars

# SMU - SECTION 8A MFC CONTROL MODULE PINOUT TEST

#### SUBJECT: SECTION 8A MULTI-FUNCTION CHIME (MFC) CONTROL MODULE PINOUT TEST

VEHICLES AFFECTED: 1991-93 "C" MODEL AND 1992-93 "H" MODELS

1992-93 Oldsmobile Eighty-Eight 1991-93 Oldsmobile Ninety-Eight

Diagnosis for Test A "MULTI-FUNCTION CHIME (mfc) CONTROL MODULE PINOUT TEST" found in following service manuals has been revised to avoid any confusion and misdiagnosis.

OLDSMOBILE: 1991-92 Oldsmobile Ninety-Eight, Page 8A-77-04 1992 Oldsmobile Eighty-Eight, Page 8A-77-04 1993 Oldsmobile Eighty/Ninety-Eight, Page 8A-77-06

THE TEXT STATES: FUEL LEVEL SENDER INPUT LESS THAN 3 OHMS WITH FUEL TANK EMPTY; MORE THAN 80 OHMS WITH FUEL TANK FULL. REFER TO SECTION 8A-80.

SHOULD BE REPLACED WITH: ENGINE RUNNING INPUT. FUEL LEVEL SENDER INPUT LESS THAN 3 OHMS WITH FUEL TANK EMPTY; MORE THAN 80 OHMS WITH FUEL TANK FULL. REFER TO SECTION 8A-80

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.