Some 1988-89 C/K Trucks may experience a loosening of the rear shock absorbers. This condition may be repaired by retorqing the bottom shock absorber retaining nuts to a revised specification of 95-110 Nm. Please note this revised specification in Service Manual Section 3D, and reference this section for shock absorber service.
If a truck is serviced for a loose rear shock, both rear shock absorbers should be checked and torqued to the new specification.
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.