SERV. MANUAL UPDATE-SEC.5E1 ABS DIAGNOSIS/CHART

SUBJECT: SERVICE MANUAL UPDATE/SECTION 5E1 ABS DIAGNOSIS/ HART A INLET/OUTLET VALVE CIRCUIT TEST

VEHICLES AFFECTED: 1991 C AND H MODELS

REVISED ELECTRONIC BRAKE CONTROL MODULE (EBCM) SOFTWARE

PONTIAC BONNEVILLE:

Fuse 8 in the Instrument Panel Fuseblock must be removed prior to any measurements being made in the test on Page 5E1-11 in Chart A Inlet/Outlet Valve Test. Add the words "Remove Fuse 8" as a condition to the test in the third box down on the left hand side of the page in your manual.

OLDSMOBILE NINETY EIGHT:

Fuse 19 in the Instrument Panel Fuseblock must be removed prior to any measurements being made in the test on Page 5E1-11 in Chart A Inlet/Outlet Valve Circuit Test. Add the words "Remove Fuse 19" as a condition to the test in the third block down on the left hand side of the page in your Oldsmobile Ninety Eight Service Manual.

OLDSMOBILE EIGHTY EIGHT:

Fuse 8 in the Instrument Panel Fuseblock must be removed prior to any measurements being made in the test on Page 5E1-11. Add the words "Remove Fuse 8" as a condition to the test in the third block down on the left side of the page.

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.