SERVICE MANUAL UPDATE SEC. 1B-HVAC COMPRESSION

VEHICLES AFFECTED: 1989-90 'W'

Models Affected:

1990 Chevrolet Lumina Section 1B pages 22, 23 1990 Pontiac Grand Prix Section 1B pages 34, 35 1990 Oldsmobile Cutlass Supreme Section 1B pages 32, 33 1990 Buick Regal Section 1B pages 32, 33

1989 Pontiac Grand Prix Section 1B pages 23, 24 1989 Oldsmobile Cutlass Supreme Section 1B pages 23, 24 1989 Buick Regal Section 1B pages 23, 24

The Air Conditioning rear compressor bracket removal and installation procedure has been revised. 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.

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.