CENTER MOUNT STOP LAMP RATTLE (REPLACE MOUNTING SCREWS). Chevrolet Beretta 1991

For 1990-2009 cars

# CENTER MOUNT STOP LAMP RATTLE (REPLACE MOUNTING SCREWS)

#### SUBJECT: CENTRE HIGH MOUNTED STOP LAMP CONTACTS REAR WINDOW (REPLACE MOUNTING SCREWS WITH NEW ONES)

#### VEHICLES AFFECTED: 1991 BERETTA "L" CAR

#### Condition:

----------- Owners of some 1991 Beretta models may comment on a rattling noise coming from the Centre High Mounted Stop Lamps (CHMSL) when experiencing rough road conditions.

#### Cause:

------- The CHMSL loosens from the support because the current CHMSL mounting screws cannot be tightened enough to provide the proper clamping load without stripping. The rattling noise is caused by a vibration that originates from the rear wheels and is transmitted to the rear shelf panel. This vibration causes the loose CHMSL to contact the rear window and create the noise.

#### Correction:

------------ Replace current CHMSL 4.2mm mounting screws with new 4.8mm screws, P/N 11505446. Position CHMSL fully forward on the support before inserting and tightening new mounting screws. Tighten screws securely without stripping.

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.