INFO ON NEW HVAC BLOWER MOTOR REPLACEMENT PARTS
SUBJECT: HVAC BLOWER MOTOR FAILURE - NEW REPLACEMENT PARTS
MODELS AFFECTED: ALL MODELS, ALL YEARS
In 1991 a new HVAC blower motor and press-on fan impeller were released into service for both past and present Cadillac vehicles. Since these new parts were not able to be retrofitted to the old "bolt-on" style components, replacement of either the fan or motor required ordering both parts and hand assembling prior to use.
To eliminate the need for hand assembly, which does not allow for proper balancing, a pre-balanced press-on motor kit is now available as a service assembly.
The motor used in this assembly has been revised to include an air shield to protect the motor from ingesting dirt and oil which could lead to intermittent operation or failure of the motor. At this time this enhanced blower motor is only available in the press-on motor kit.
When replacing either the fan impeller or the blower motor use the chart below for the correct replacement kit:
Year/Model Press-On Motor Kit ---------- ------------------ 1971-1985 E/K-Car 52460703 1971-1992 D-Car 1981-1983 C-Car
1982-1988 J-Car 52462716
1985 C-Car 52461233
1986-1989 C-Car 52458915 1990 C-Car (replacing motor P/N 52450348) 1992 E/K-Car 1986-1990 E/K-Car 52461187 1987-1990 V-Car
1991-1993 V-Car 52460771 1991 E/K-Car
1990 C-Car* 52456175 (replacing motor P/N 5049610) 1991-1993 C-Car
* Check failed part for part number stamp and refer to chart for appropriate replacement.
For service procedure refer to Section 1B or 1C of the appropriate Service Information Manual.
For 1986-1989 DeVilles and Fleetwoods, 1991 Eldorados and Sevilles, and all Cimarrons it may be necessary to rock the engine slightly to allow access to replace the fan motor and impeller as an assembly.
To provide this access use the following procedure:
1. Remove two cradle bolts from front of vehicle. See section on frame in the appropriate Service Information Manual.
2. Slightly raise vehicle to allow engine to rock forward and give access to blower motor assembly.
3. Disconnect electrical connector and cooling tube to blower assembly.
4. Remove five screws and blower assembly.
5. Replace fan motor and mounting screws.
6. Lower vehicle.
7. Install two front cradle bolts and torque to specifications indicated in the appropriate Service Information Manual.
Parts are expected to be available on July 6, 1992. In case of limited inventory, parts will be placed on 400 control to waive VIP surcharges. Only verifiable emergency VIP orders will be accepted. SPO will make every effort to obtain parts. However, the part will be shipped premium transportation at dealer's expense, and all other order types will be placed on back order until the 400 control is removed.
For warranty purposes use Labor Operation D1328 in the Labor Time Guide for the appropriate year.
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.
