INFO. ON QUARTER PANEL WINDOW OPENING DESIGN CHANGE

SUBJECT: INFORMATION ON QUARTER PANEL DESIGN CHANGE

VEHICLES AFFECTED: 1992 "N" MODELS

APPLICATION:

----------- 1992 "N" Coupes and Pontiac and Buick Sedans

All coupes and Buick and Pontiac sedan quarter panels had a design change after production startup.

Buick, Oldsmobile and Pontiac coupe quarter panels were revised at the lower area of the quarter window opening beltline. Thus, the respective quarter window modules were revised to fit the new quarter panel surface. In addition, Oldsmobile coupe quarter panels were also revised by removing a portion of the rear window reveal moulding step at the lower corner of the quarter panel rear window opening.

Notice: New window modules will fit both new and old quarter panels. Changes to the quarter panel at the beltline will not allow the old window module to fit the revised quarter panel. For this reason, old window modules will only fit the old style quarter panels.

Pontiac and Buick sedan quarter panels were revised by removing a portion of the rear window reveal moulding step at the upper corner of the rear window.

Repair damaged quarter panels as follows:

PONTIAC, OLDSMOBILE AND BUICK COUPES

1. Damage above the upper portion of quarter panel (mid sail):

a. Vehicle with old panels - Cut and repair using normal procedures. (Order either old or new window module.)

b. Vehicle with new panels - Cut and repair using normal procedures. (Order either old or new window module.)

2. Damage below the upper portion of quarter panel (mid sail):

a. Vehicle with old panels - cut and repair (remove damaged section and weld in new section). (Must order new window module.)

For Oldsmobile coupes only: on opposite quarter panel, fill in corner using normal repair procedures and finish to match new panel appearance.

b. Vehicle with new panels - Cut and repair using normal procedures. (Must order new window module.)

PONTIAC AND BUICK SEDANS

1. Damage above the upper portion of quarter panel (mid sail):

a. Vehicle with old panels - cut and repair (remove damaged section side, fill in corner using normal repair procedures and finish to match new panel appearance).

b. Vehicle with new panels - cut and repair damaged area using normal repair procedures.

2. Damage below the upper portion of quarter panel (mid sail):

a. Vehicle with old panels - cut and repair using normal procedures.

b. Vehicle with new panels - cut and repair using normal procedures.

PARTS INFORMATION:

PONTIAC COUPES

Quarter Window SE Model GT Model -------------- -------- -------- Old RH 22541888 22550908 LH 22541889 22550909

New RH 16616360 16616362 LH 16616361 16616363

Quarter Panel SE and GT ------------- --------- Starting with VIN CN074205 RH 12521506 Starting with VIN MN265077 LH 12521507

OLDSMOBILE COUPES

Quarter Window All Models -------------- ---------- Old RH 22541890 LH 22541891

New RH 16616358 LH 16616359

Quarter Panel All Models ------------- ---------- Starting with VIN 443491 LH 12521396 RH 12521397

BUICK COUPES

Quarter Window Limited & Custom Grand Sport -------------- ---------------- ----------- Old RH 22541892 22554380 LH 22541893 22554381

New RH 16616364 16616366 LH 16616365 16616367

Quarter Panel All Models ------------- ---------- Starting with VIN 647932 RH 12521508 LH 12521509

PONTIAC AND BUICK SEDANS

Buick sedan quarter panels starting with VIN breakpoint 604266.

RH quarter panel 12518988 LH quarter panel 12518989

Pontiac sedan quarter panels starting with VIN breakpoint CN203528.

RH quarter panel 12518986 LH quarter panel 12518987

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.