DeVille V6-260 4.3L DSL (1985)
Oil Pick Up/Strainer: All Technical Service Bulletins
Engine - Low Moaning Noise After Cold Start
Bulletin No.
T-89-44
File in Group
6A
Number
102
Corp. Ref. No.
816108
Date
Dec. 1988
SUBJECT:
MOANING NOISE AFTER START
MODELS AFFECTED: 1985-1988 DE VILLES AND FLEETWOODS 1986-1988 ELDORADOS AND SEVILLES 1987-1988 ALLANTES
Some 1985-1988 DeVilles and Fleetwoods, 1986-1988 Eldorados and Sevilles, and 1987-1988 Allantes may experience a low moaning noise after cold
engine start not unlike the noise associated with a dry power steering pump. The noise is caused by vibration of the oil pump pickup and can be repaired
by replacing the oil pump assembly (pickup replacement is not possible since it is staked into the pump during manufacturing). New pumps with a
revised configuration of the pickup are available by ordering:
^
P/N 3517753 for 1985-1989 C, E, K
^
P/N 3517754 for 1987-1989 V
These new pumps will supersede the previously released parts.
Parts are expected to be available on December 5, 1988. Until then, normal part orders will not be accepted by GMSPO. Only verifiable emergency VIP
orders will be accepted. SPO will make every effort to obtain parts. All parts will be placed on 400 control to waive VIP surcharges. However, the part
will be shipped premium transportation at dealer's expense. All other order types will be cancelled as incorrectly ordered while the 400 control is in
place.
Service for 1985-1987 C, E, K Vehicles
The revised pump can be used to directly replace the previous design. No modifications are required.
Service for 1988 C. E, K, and 1987-1988 V Vehicles
Since these engine oil pans incorporate a baffle specifically shaped to accommodate the oil pump pickup, the revised pickup configuration will not be
compatible. On these vehicles, the oil pan must also be replaced.
^
P/N 1649382 for C, E, K
^
P/N 1649126 for V
1989 production cars use these quieter oil pumps and the appropriately baffled oil pans.
For warranty purposes use Labor Operation J1020 at 1.4 hours for C-Cars, 1.5 hours for E and K-Cars, or 1.9 hours for V-Cars.
