Calais L4-138 2.3L VIN D FI (1990)
Accumulator: All Technical Service Bulletins
A/T - Light Throttle Pedal Buzz
SUBJECT
PEDAL BUZZ AT ZERO TO LIGHT THROTTLE IN
FORWARD GEAR RANGES - (NEW SPACER PLATE)
MODELS/YEARS 1990-91 CUTLASS CALAIS AND CUTLASS SUPREME EQUIPPED WITH QUAD 4 ENGINE AND HYDRAMATIC 3T40
TRANSAXLE (RPO-MD9)
NUMBER:
91-T-02
CORP.REF.NO: 077126
DATE:
August 1990
SECTION:
3T40
BULLETIN COVERS:
A new spacer plate with a smaller 1-2 accumulator orifice which will reduce the potential for pedal buzz. This pedal buzz is noticeable at zero to light
throttle in forward gear ranges and is caused by unstable operation of the 1-2 accumulator valve.
DATE OF PRODUCTION CHANGE:
This new spacer plate will go into production in all "K" and "L" model HYDRA-MATIC 3T40 transaxles on July 30, 1990 (Julian Date 211).
SERVICE PROCEDURE:
To service any HYDRA-MATIC 3T40 for a pedal buzz condition, replace the (existing) spacer plate with a new spacer plate which contains the smaller
1-2 accumulator orifice.
SERVICE PARTS INFORMATION:
Refer to the following part numbers when ordering this new spacer plate.
Parts are expected to be available on 8-31-90. Until then, normal part orders will not be accepted by GMSPO. Only verifiable emergency VIP orders will
be accepted. GMSPO 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 MANUAL REFERENCE:
Whenever service to the spacer plate or valve body assembly is necessary, refer to the HYDRA-MATIC 3T40 Unit Repair Section of your service
manual.
