A/C - New Style O-Rings

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Number: 91-329-1A

Section: 1A

Date: MAY 1991

Corp. Bulletin No.: 131206


Subject: NEW STYLE "O" RINGS AT EVAPORATOR


Model and Your: 1991 CORSICA WITH 2.2L, AND 3.1L ENGINE
1991 BERETTA WITH 2.2L, 3.1L
AND 2.3L ENGINES


In an effort to reduce refrigerant leaks during assembly, the 1991 Corsica/Beretta style of "O" ring at the evaporator changed, from a standard "O" ring design to a captured "O" ring. This change was made during early 1991 production. When making necessary repairs at the evaporator, make certain the correct captured "O" rings are used.

IMPORTANT: 2.2L (VIN G) and 3.1L (VIN T) use captive "O" rings on both inlet and outlet lines at the evaporator.

2.3L (VIN A) used captive "O" rings on the inlet line to the evaporator only. The outlet line uses a standard size "O" ring.

The captured "O" ring part numbers are as follows:

Inlet pipe "O" ring - P/N 52454645

Outlet pipe "O" ring - P/N 52454646

The opposite ends of the A/C lines are the standard "O" ring design.

Parts are currently available from GMSPO.

Use current labor operation and time.