For 1990-2009 cars

# 'HOOT' TYPE SOUND COMING FROM OUTSIDE REAR OF VEHICLE

#### SUBJECT: "HOOT" TYPE SOUND COMING FROM OUTSIDE REAR OF VEHICLE (INSTALL ADDITIONAL REAR BACKGLASS LOWER LACE MOLDING)

#### MODELS: 1999 OLDSMOBILE ALERO 1999 PONTIAC GRAND AM

#### CONDITION:

SOME CUSTOMERS MAY COMMENT ABOUT AN INTERMITTENT "HOOT" TYPE NOISE OR SOUND COMING FROM THE OUTSIDE REAR OF THE VEHICLE. THE NOISE CAN BEST BE DESCRIBED AS THE SOUND MADE WHEN BLOWING ACROSS THE TOP OF A GLASS POP BOTTLE.

#### CAUSE:

OUTSIDE AIR (WIND) MAY MOVE ACROSS THE OPENING BETWEEN THE BOTTOM OF THE REAR BACKGLASS LACE MOLDING AND THE FRONT EDGE OF THE DECK (TRUNK) LID.

#### CORRECTION:

INSTALL AN ADDITIONAL LACE MOLDING TO THE EXISTING REAR BACKGLASS LOWER LACE MOLDING USING THE FOLLOWING PROCEDURE.

SERVICE PROCEDURE -

1. OPEN THE DECK (TRUNK) LID TO THE FULL OPEN POSITION.

2. CLEAN THE EXISTING BACKGLASS LOWER LACE MOLDING WITH GLASS CLEANER OR MILD SOAP AND WATER.

3. STARTING AT EITHER THE LEFT OR RIGHT SIDE OF THE VEHICLE, INSTALL THE NEW LACE OVER THE BOTTOM EDGE OF THE EXISTING BACKGLASS LOWER LACE MOLDING. SEE FIGURE 1.

4. AFTER THE NEW LACE MOLDING HAS BEEN INSTALLED, PEEL BACK BOTH ENDS OF THE NEW LACE MOLDING APPROXIMATELY 25 MM (1 IN).

5. CAREFULLY APPLY A SMALL BEAD OF 3M(R) #08011 BLACK WEATHERSTRIP ADHESIVE (OR EQUIVALENT) APPROXIMATELY 25 MM (1 IN) LONG INSIDE THE ENDS OF THE NEW LACE MOLDING AS SHOWN IN FIGURE 1.

6. REPOSITION BOTH ENDS OF THE NEW LACE MOLDING ONTO THE BACKGLASS MOLDING.

7. CLOSE THE DECK LID.

#### PARTS INFORMATION:

P/N DESCRIPTION ============== ================================

22619334 LACE - REAR WINDOW LOWER

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

#### WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION LABOR OPERATION NUMBER DESCRIPTION TIME =============== =============================== ===============

B9700 MOLDING, REAR WINDOW LOWER LACE 0.3 HR INSTALL

FIGURES: 01 ATTACHMENTS: 00

FIGURE 1 1. EXISTING LACE MOLDING ALONG BOTTOM EDGE OF REAR BACKGLASS 2. SECTION VIEW OF REAR BACKGLASS 3. SECTION VIEW OF EXISTING LACE MOLDING 4. SECTION VIEW OF EXISTING LACE MOLDING WITH NEW LACE INSTALLED 5. LOCATION FOR APPLYING BEAD OF WEATHERSTRIP ADHESIVE AT BOTH ENDS

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.

COPYRIGHT 1998 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.