The front wheel camber specifications for the 1990 'J' vehicles are shown incorrectly in section 3A of the 1990 Chassis Service Manual.
ALL 1990 model J vehicle front wheel camber specifications should be 0 degree +/- .70.
Please note this correction in your Service Manual (with reference to this bulletin) on page 3A-7, Fig 7.
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.