Buick Regal 2018-2026 Service Manual / Transmission / Automatic Transmission - Aisin AF50-8 (MRC) / Description and Operation
Buick Regal: Description and Operation
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Transmission Identification Information
For automatic transmission AF50, the identification plate is on the top of
the transmission housing.
Aisin Warner transmission type
Fabrication line 1 = 000001 - 500000 Fabrication line 2 = 50000
Electronic Component Description
Control Module
K71 Transmission Control Module
The TCM (2) is mounted directly on top of the transmission (1). The selector
lever and transmission range sensor is
integrated in the control module. T
Special Tools and Equipment
SPECIAL TOOLS
DT-26941
J-26941
Remover
DT-37228
J-37228
Seal Cutter
DT-43911
J-43911
Selector Shaft Seal
Remover
DT-44215
J-44215
Rear Seal Installer
DT-44809
J-44809
Output Shaft Seal
Installer
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DTC P1553
Diagnostic Instructions
Perform the Diagnostic System Check prior to using this diagnostic
procedure:Diagnostic System
Check - Vehicle
Review the description of Strategy Based Diagnosis:Strategy Based
Diagnosis
An overview of each diagnostic category can be found here:Diagnostic
Procedure
DTC B361A
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diagnostic Procedure Instructions provides an overview of each
diagnostic category.
DTC Descriptor
DT
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