Engine Controls - A/C Not Cold Enough/Int. Operation

TECHNICAL

Bulletin No.: 08-01-38-003

Date: June 23, 2008

Subject:
Air Conditioning Not Cold Enough, Intermittent A/C Operation Or Occasional Warm Air From Instrument Panel Air Outlets (Reprogram ECM)

Models:
2008 Chevrolet Equinox
2008 Pontiac Torrent

with 3.4L Engine (VIN F - RPO LNJ)

Built Prior to VIN Breakpoint 86075512

Condition

Some customers may comment that the air conditioning (A/C) is not cold enough. Others may comment on intermittent A/C operation or occasional warm air from the instrument panel air outlets.

Cause

This condition may be caused by a software anomaly that causes the compressor to stay off for too long.

Correction





A revised calibration has been developed to address this condition. Technicians are to reprogram the Engine Control Module (ECM) using SPS with the latest software available on TIS2WEB. Refer to the Engine Control Module Programming and Setup (LNJ) procedure in SI for more information. As always, make sure your Tech 2(R) is updated with the latest software version.

Warranty Information





For vehicles repaired under warranty, use the table.





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