1991 "F" style vehicles built after the following VIN breakpoints will use a new type front door glass retainer assembly.
Chevrolet NL104152 Pontiac NL202399
The new part combines the vertical weatherstrip and plastic panel (used on earlier styles) into a single component.
If service of these parts is required, it is recommended that the part be replaced with the type part it was built with.
Past models prior to 1992 VIN breakpoints, use the early type multi piece retainer.
Part Numbers: 10198202 - Right ------------- 10198203 - Left
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.