SERVICE MANUAL UPDATE SEC.8A-44 ANTI-LOCK BRAKE SYS

Models Affected: 1990 GRAND PRIX

SERVICE MANUAL UPDATE

Section 8A-44 in the 1990 Pontiac Grand Prix Service Manual contains incorrect information. Please make the following changes in your copy of the Manual.

1. On page 8A-44-23, Change step 2 in the trouble tree to read "IS CODE A007 ALSO SET? instead of "IS CODE A043 ALSO SET?"

2. On page 8A-44-114, Change the name of connector C165 in the schematic to connector C164.

3. On page 8A-44-120, Change the name of the RR Wheel Speed Sensor in the schematic to RF Wheel Speed Sensor.

4. On page 8A-44-127, Change step 5 in the trouble tree to read "MEASURE RESISTANCE BETWEEN TERMINAL 1C1 OF ANTILOCK BRAKE CONTROLLER CONNECTOR AND GROUND" instead of "MEASURE RESISTANCE BETWEEN TERMINAL 1C4 OF ANTILOCK BRAKE CONTROLLER CONNECTOR AND GROUND".

5. On page 8A-44-1, Change the terminal designation for the Antilock Brake Controller's LF Wheel Speed Input from terminal 1C5 (CKT 873) to terminal 1C2.

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.