SERVICE MANUAL UPDATE SEC. 3B1 PWR. STG. PUMP PULLEY TOOL

SERVICE MANUAL UPDATE

SECTION 3B1

MODELS AFFECTED:

1991 CHEVROLET, BUICK W-CAR PAGE 3B1-2 1991 PONTIAC, OLDSMOBILE W-CAR PAGE 3B1-3

1990 - 1991 CHEVROLET, PONTIAC AND OLDSMOBILE U-VAN PAGE 3B1-4

AT START OF PRODUCTION THE POWER STEERING PUMP PULLEY CHANGED ON THE 3.1 (LG6), ALSO A MODEL YEAR RUNNING CHANGE ON THE 3.1 (LHO) AND 3.4 (LQ1). THE POWER STEERING PUMP PULLEY IS NOW MADE OF COMPOSITE MATERIAL. THIS NEW PULLEY HAS A FLANGE WHICH DECREASES THE DIAMETER OF THE ACCESS HOLE WHICH PREVIOUS "J" AND "BT" USED. THESE SPECIAL TOOLS WILL NOT WORK. REFER TO FIGURE 1 FOR CORRECT SPECIAL TOOL APPLICATIONS.

REMOVAL:

J 25034-B BASE ONLY -WITH- J 37609 SCREW

-OR-

J 37609-A POWER STEERING PUMP PULLEY REMOVAL (THIS IS A COMPLETE SCREW AND BASE ASSEMBLY)

INSTALLATION:

J 36015 POWER STEERING PUMP PULLEY INSTALLER

PLEASE MAKE A NOTE OF THIS IN YOUR 1991 SERVICE MANUALS. <

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.

COPYRIGHT 1991 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.