For 1990-2009 cars

# SERVICE MANUAL UPDATE-SEC 8A CELL 82 DIGITAL CLUSTER I/P

#### SUBJECT: SMU - SECTION 8A - CELL 82 - DIGITAL CLUSTER I/P (U2A) C2 PINOUT TEST REVISION

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

#### APPLICATION:

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

The B: Instrument Cluster's C2 Pinout Test, found in the service manuals listed below, has been revised to avoid any confusion and misdiagnosis.

1991 Oldsmobile 98, page 8A-82-18 1992 Oldsmobile 98, page 8A-82-18 1993 Oldsmobile 98, page 8A-82-21 1992 Oldsmobile 88, page 8A-82-18 1993 Oldsmobile 88, page 8A-82-21

Please update your respective service manual accordingly with the following revised text for proper system diagnosis.

The text which states:

CONNECTOR TERMINAL B1 - NOT USED

Should be replaced with:

CONNECTOR TERMINAL B1 - ILLUMINATED INPUT, VARIABLE VOLTAGE WITH LAMPS ON AND DIMMER CONTROL ADJUSTED. REFER TO SECTION 8A-117 B1 GRY (8).

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.