For 1990-2009 cars

# INTERMITTENT A/C OPERATION OR BLOWN #7 FUSE

#### MODELS AFFECTED: 1989 DE VILLES AND FLEETWOODS 1989 ELDORADOS AND SEVILLES 1989 ALLANTES

Some 1989 DeVilles, Fleetwoods, Eldorados, Sevilles, and Allantes may experience a condition of a blown A/C fuse. This condition may be intermittent, causing the fuse to blow on repeated occasions. Fuse locations are listed below:

#### Model Position ----- -------- Allante 10 Eldorado/Seville 2 DeVille/Fleetwood 7

This condition may be caused by the A/C compressor clutch diode legs becoming shorted to the harness. The diode was relocated about seven inches away from the compressor clutch connector with the introduction of the pull-to-seat connector for the 1989 model year. To repair this condition use the following procedure:

1. Raise the vehicle.

2. Remove the compressor splash shield as described in the appropriate Service Information Manual.

3. Remove the conduit and heat shrink material protecting the diode.

4. Test diode with a digital voltmeter. Generally, a properly operating diode can be re-insulated and returned to the harness conduit. Inoperative diodes should be replaced using a 1 amp, 2000 volt common clamping diode, available at local electronic stores.

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.