KNOCKING NOISE-TORSION BAR DAMAGED OR BROKEN-NEW PART

SUBJECT: KNOCKING NOISE TORSION BAR SUPPORT INSULATOR DAMAGED/BROKEN NEW SERVICE PART

MODELS/YEARS: 1991 BRAVADA

Some owners of 1991 Bravadas, built prior to vehicle number M2705806, may comment about a knocking or rattling sound coming from the underside of their vehicle. This sound can occur if the torsion bar support insulator is damaged or breaks. To correct this condition, a new more durable torsion bar insulator, P/N 15677665 has been released and is currently available from GMSPO. The new insulator is visually identical to the previous insulator and the installation procedure has not changed (reference service manual, Section 3C).

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.