Some pulse and standard permanent magnet depressed park wiper motors may exhibit intermittent operation in any mode. This condition may be due to the grounding tab attached to the motor end cap not contacting the round motor case.
CORRECTION: Attach ground clip, P/N 22048623, (Figure 1) to the end of the round motor case over ground tab.
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.