Campaign - PROM Fails to Turn A/C OFF When Needed: Overview

88buick16

Model Year: 1989

Bulletin No.: 89-C-2

File In Group: 1

Number: 4

Date: Dec '88
SUBJECT: CALIBRATOR, PROM ("MEM-CAL")


MODELS AFFECTED: 1989 SKYLARK WITH 3300 V-6 ENGINE (VIN CODE "N") AND AIR CONDITIONING


CONDITION


Some 1988 Buick Skylark model vehicles with 3300 V6 (RPO LG7) engine and air conditioning were built with a "Mem-cal" in the Engine Control Module which allows the A/C compressor to operate at low system pressures during low ambient temperatures or when there is a loss of freon. This operation will eventually cause the compressor to fail due to the lack of proper internal lubrication.