IMPROVED JACK ASSEMBLY WITH INCREASED HEIGHT-REPLACE ASSY.

SUBJECT: IMPROVED JACK ASSEMBLY WITH INCREASED LIFT HEIGHT (REPLACE ASSEMBLY)

VEHICLES AFFECTED: 1989-1991 "T" PICKUP WITH OFF ROAD (ZM6) SUSPENSION

A jack assembly with increased lift height has been released for T pickups with the off road (ZM6) suspension package and P235/75R-15 on-off road tires. This revision will allow easier tire/wheel removal.

Vehicles built after the following VIN breakpoints have the redesigned jack assembly installed at production:

MORAINE GMC M2543012 CHEVROLET M2254997

SHREVEPORT GMC M8536534 CHEVROLET M8239541

PONTIAC WEST GMC M0523951 CHEVROLET M0182302

SERVICE PROCEDURE:

1. Remove jack from vehicle storage container.

2. Install new jack in storage container.

SERVICE PARTS INFORMATION

PART NUMBER DESCRIPTION QTY ----------- ----------- ---

15659942 Jack 1

Use the most applicable Labour Operation and Time from the Canadian Labour Time Guide.

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.