A/C - New O Rings Reduce System Leak Potential

89chevy23

GMC NUMBER: 89-T-87

GROUP: 1B - Air Conditioning

DATE: JULY, 1989


CORPORATE
NUMBER: 961201

SUBJECT: AIR CONDITIONING FREON (R) SYSTEM LEAKS

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 (R) leakage were released in production. These new, revised "O" rings are manufactured from a neoprene material providing increased sealing properties over the former nitrile composition. When repairing a Freon (R) system leak, or performing a major repair to the air conditioning Freon (R) 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 warrantly 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