INFO ON NEW HVAC BLOWER MOTOR REPLACEMENT PARTS. Pontiac Grand Am 1993

SUBJECT: INFORMATION ON NEW HVAC BLOWER MOTOR REPLACEMENT PARTS

MODELS AFFECTED: 1984-93 6000, SAFARI WAGON, FIREBIRD, BONNEVILLE, SUNBIRD, GRAND AM, TRANS SPORT, PHOENIX AND GRAND PRIX MODELS

THIS BULLETIN IS BEING REVISED TO ADD MODELS AND ALL YEARS. THIS BULLETIN CANCELS AND REPLACES BULLETIN 88-1-26 ISSUED 7/92.

In 1991 a new HVAC blower motor and press-on fan impeller were released into service for both past and present Pontiac 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 ---------- ------------------ 1976-1989 Safari Wagon (W/A/C) 52460703 1982-1991 6000 (Exc. A/C) 52461561 1982-1991 6000 W/A/C 52460703 1977-1981 Firebird W/A/C 52460703 1982-1992 Firebird (Exc. A/C) 52461561 1982-1988 Firebird W/A/C 52461377 1989-1992 Firebird W/A/C 52460752 1993 Firebird ALL 3094939

1982-1984 Grand Prix (Exc. A/C, C46) 52461561 1982-1985 Grand Prix W/A/C 52460703 1982-1986 Grand Prix (Exc. A/C) 52461561 1986-1987 Grand Prix W/A/C (Exc. C46) 52460703 1986-1989 Bonneville W/A/C 52458915 1990 Bonneville W/A/C (1st DES) 52458915 1990 Bonneville W/A/C (2nd DES) 52456175 1991 Bonneville W/A/C 52456175 1992-1993 Bonneville ALL 52456175

1982-1985 Sunbird W/A/C 52462716 1982-1988 Sunbird (Exc. A/C) 52461561 1986-1991 Sunbird W/A/C 52462716 1992-1993 Sunbird ALL 52462716

1985-1991 Grand Am (Exc. A/C) 52461561 1985-1991 Grand Am W/A/C 52462716 1992-1993 Grand Am ALL 52462716

1982-1987 T-1000 (Exc. A/C) 52461561 1982-1987 T-1000 W/A/C 52462716 1990-1993 Trans Sport W/C40 52461186 1990-1993 Trans Sport W/C67 52461186 1992-1993 Trans Sport W/C34 & C36 (RR) 52461187 1992-1993 Trans Sport W/C34 (FRT) 52461186

1988-1993 Grand Prix ALL 3094939

1982-1984 Phoenix (Exc. A/C) 52461561 1982-1984 Phoenix W/A/C 52460703

* 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 front wheel drive vehicles, 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 currently available from GMSPO.

For warranty purposes use Labor Operation D1322 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.