Corsica L4-134 2.2L (1991)
A/C Coupler O-ring: Technical Service Bulletins
A/C - New Style O-Rings
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.
