Skylark V6-204 3.3L VIN N FI (1989)
PROM - Programmable Read Only Memory: All Technical Service Bulletins
Campaign - PROM Fails to Turn A/C OFF When Needed
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.
