For 1990-2009 cars

# A/C COMPRESSOR HOSE ASSEMBLY REFRIGERANT REPEAT LEAKS

#### MODELS AFFECTED: 1985-1990 DE VILLES AND FLEETWOODS

This bulletin is being revised to change the labor time information. Please discard bulletin T-90-62.

Some 1985-1990 DeVilles and Fleetwoods may experience a service A/C light due to a refrigerant leak from a crack in the metal tube section of the compressor hose assembly. The crack may be caused by loose A/C compressor mounting bolts. The A/C compressor may be loose to the mounting bracket or the bracket may be loose to the block.

#### NOTE: The BCM may or may not store a BCM diagnostic code F46, F47, and/or F48. To diagnose and repair this condition:

1. Remove the A/C compressor using the appropriate Service Information Manual.

2. Torque the A/C compressor mounting bracket bolts to 45 N-m (33 lbs. ft.).

3. Reinstall the A/C compressor and torque bolts to 30 N-m (22 lb. ft.).

4. Install new compressor hose assembly listed below.

1985-1987 P/N 1634220 1988 P/N 25535806 1989 P/N 25535804 1990 1st design P/N 25535804 1st design (before approximate VIN breakpoint 207852). A/C compressor and condenser hose are stamped with P/N 25535804 with metal tubing from clip to accumulator. 1990 2nd design P/N 25553988 2nd design (after approximate VIN breakpoint 207852). A/C compressor and condenser hose are stamped with P/N 25553988 with metal tubing three inches before accumulator only.

5. Evacuate and recharge A/C system using the R-12 Charging Capacity chart below:

1985 2-7/8 lbs. 1986 2-1/2 lbs. 1987-1988 2-3/8 lbs. 1989-1990 2-7/8 lbs.

Parts are currently available from GMSPO.

For warranty purposes use Labor Operation T6452 at 2.0 hours.

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.