Calais L4-138 2.3L VIN D FI (1990)
Blower Motor: All Technical Service Bulletins
Blower Motor - Whistle Noise
SUBJECT
WHISTLE NOISE FROM BLOWER MODIFY BLOWER
CASE
MODELS/YEARS
1990 CUTLASS CALAIS
NUMBER:
90-T-142
CORP.REF.NO: 071203
DATE:
JULY 1990
SECTION:
1B
Some 1990 Cutlass Calais models built between the VIN breakpoints listed below may exhibit a "whistle" noise when the blower is operated under
certain conditions. The whistle noise may be experienced under the following operating conditions:
VEHICLES BREAKPOINTS
With AC
Without AC
Plant
Nameplate
From VIN # to VIN #
From VIN # to VIN #
Lansing
Oldsmobile
LM748734 - LM759966
LM749377 - LM759966
In order to reduce the whistle noise the following procedure should be used.
Figure 1
1.
Remove blower motor and fan assembly from vehicle
