A/C - Evaporator Core Freezes

Bulletin Number: 88-1-1
Reference Number: 831401
Publish Date: 9/87
Subject: AIR CONDITIONING EVAPORATOR CORE FREEZES


Models

Affected: 1988 LeMANS WITH AIR CONDITIONING
Some of the subject vehicles produced prior to VIN 319830 may experience a gradual loss of A/C cooling performance. On some vehicles this condition may be caused by the evaporator core freezing.

To prevent future occurrence of the condition when caused by evaporator core freezing, the A/C compressor control valve may be replaced with a new part.

Remove existing compressor control valve and install new P/N 2724331, which is available from GMSPO, following existing service manual procedures.

Use applicable Labor Operation Number and Time.