Window regulators returned for evaluation have shown that complete assemblies are being replaced when only the drive tape is damaged. Drive tapes, as well as other regulator components, are serviced as individual parts.
Replacement of complete window regulators is not required in most instances. Removal, installation and adjustment procedures pertaining to door window systems can be found in the Fisher Body Service Manuals, Section 5.
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.