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

Subject: SERVICE MANUAL UPDATE - SECTION 3B1 POWER STEERING PUMP PULLEY REVISED SPECIAL TOOLS

Models Affected: 1991 GRAND PRIX AND SUNBIRD MODELS, 1990-91 TRANS SPORT MODELS WITH 3.1L AND 3.4L

Models Affected: ------------------ 1991 Sunbird W/3.1L Page 3B1-2 1991 Grand Prix Page 3B1-3

1990 - 1991 Trans Sport 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 (LH0) 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. 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.