INADEQUATE HEAT/AIR FLOW DISTRIBUTION-REVISED AIR DUCT

SUBJECT: INADEQUATE HEAT/AIR FLOW DISTRIBUTION TO DRIVER'S SIDE FLOOR (INSTALL REVISED HEATER FLOOR OUTLET)

MODELS AFFECTED: 1991 ROADMASTER ESTATE WAGONS 1992 ROADMASTER SEDANS

CONDITION:

------------ Some 1991-92 Roadmasters may experience inadequate driver's side heat.

CAUSE:

------- Inadequate heat and air flow distribution to the driver's side from the heater floor outlet.

CORRECTION:

------------ Install revised heater floor outlet.

Procedure, Parts and Information:

Install a revised heater floor outlet, P/N 10100996. 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 Figure 1.

Parts are currently available from GMSPO.

Vehicles prior to the following breakpoints are affected:

Willow Run Arlington MW400704 NR400212

WARRANTY INFORMATION:

Labor Operation Number: D1517 Labor Time: .2 Hour

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.