A/C FREON LEAKS (REPLACE 'O' RING SEALS W/NEW P/N'S)

MODELS: 1987-1989 G VANS EQUIPPED WITH AIR CONDITIONING (RPO C60 AND C69)

Effective with vehicles manufactured after January 30, 1989 (Vehicle Identification Numbers listed below), new air conditioning system "O" ring seals which reduce the potential of Freon leakage were released in produdion. These new, revised "O" rings are manufactured from a neoprene material providing increased sealing properties over the former nitrile composition.

When repairing a Freon system leak, or performing a major repair to the air conditioning Freon system, it is recommended the revised "O" ring seals be installed.

Below is a list of the new "O" ring seal part numbers:

NEW PART NUMBER DESCRIPTION --------------- ------------ 52450548 "O" Ring Seal 1/4" O.D. 3093509 "O" Ring Seal 3/8" O.D. 3094214 "O" Ring Seal 1/2" O.D. 3094215 "O" Ring Seal 5/8" O.D. 3094216 "O" Ring Seal 3/4" O.D.

Vehicle Identification Number breakpoints:

Scarborough Lordstown

GMC 2GTDG15H3K4518076 1GDGG35K2K7520289

Parts are currently available from GMSPO.

For repairs to vehicles under warranty use:

Labor Labor Operation Description Time --------- ----------- ---- D3040 Compressor Manifold .4 Hr D3041 Condenser .4 Hr D3043 Expansion Valve .5 Hr D3044 Evaporator .2 Hr D3045 Accumulator .3 Hr D3047 Pressure Switch .2 Hr D3055 Floor Plate to Rear A/C .4 Hr

Add: Discharge/Charge A/C System .5 Hr

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.