CONDITION: Some 1991 Custom Cruisers built prior to vehicle number MW303465 may exhibit inadequate driver's side heat.
CAUSE: Inadequate heat and air flow distribution to the drivers side from the heater floor outlet.
CORRECTION: Install a revised heater floor outlet, P/N 10100996, which is currently available form GMSPO. The revised outlet may be identified from the old outlet by the addition of a rectangular opening and the removal of an extension tab on the left hand side of the outlet, as shown in the illustration below.
Labor Operation Number: D1517 Labor Time: 0.2 hour Trouble Code: 92
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.