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For 1990-2009 cars only

SERVICE MANUAL UPDATE LUMBAR SUPPORT SEAT DIAGNOSIS

MODELS/YEARS 1988-89 TOURING SEDAN, TORONADO AND CUTLASS SUPREME

The following 'Troubleshooting Hint' should be added to cell 145 of the 1988 and 1989 88-98, Toronado and Cutlass Supreme Service Manuals, Section 8A.

Before replacing the seat solenold valve assembly, air pump assembly, or seat control module, inspect the lumbar support seat air hose harness for leaks, kinks or restrictions.

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.