SERVICE GUILD: SMU SEC. 1B-HVAC COMPRESSOR

Model and Year: 1990 W CAR

The Air Conditioning rear compressor bracket removal and installation procedure has been revised. The information contained in this bulletin should be replaced with the procedure in the 1990 W Car Service Manual, Section 1B, Pages 22 and 23. The following procedure should be used when removing and installing this bracket.

Procedure:

A/C COMPRESSOR REAR BRACKET

Remove or disconnect

1. Negative battery cable

Raise vehicle and suitably support. Refer to GENERAL INFORMATION (Section OA).

2. Oil Filter

3. Oil Filter adapter and gasket

Clean:

Gasket Surfaces

4. Electrical connectors from A/C compressor and coil pack

5. Spark plug wire loom, position aside

6. Rear A/C compressor bracket bolts.

Install or Connect

1. Rear A/C compressor bracket bolts

Tighten:

Bolts to 35 N.m (18 lb. ft.)

2. Spark plug wire loom

3. Electrical connectors to A/C compressor and coil pack

4. Oil Filter adapter gasket and adapter

5. Oil Filter

Lower vehicle

6. Negative battery cable

Fluid levels

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.