Buick Regal 2018-2025 Service Manual / Transmission / Transmission Cooling System
Buick Regal: Transmission Cooling System
SPECIFICATIONS
FASTENER SPECIFICATIONS
Single Use Non-Threaded Fasteners/Components
NOTE: All fasteners/components listed in this table MUST BE DISCARDED and replaced with NEW after removal.
Application
Transmission Fluid Cooler Line Seal
Transmission Fluid Cooler Pipe Fitting Retainer
Reusable Threaded Fastener Tightening Specifications
NOTE: All fasteners listed in this table can be reused after removal.
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Transmission Overheats
TRANSMISSION FLUID COOLER FLOW TEST AND FLUSHING (6T50)
GM studies indicate that plugged or restricted transmission oil coolers and
pipes cause insufficient
transmission lubrication and elevated ope
Transmission Fluid Cooler Flow Test and Flushing (AF50-8)
Special Tools
DT - 45096 TransFlow Cooler Flush Machine
DT - 45096 - 30 TransFlow Adapter
For equivalent regional tools, refer to Special Tools.
GM studies indicate that plugged or restricted tra
SEE MORE:
DTC C0615, C0620, or C0625
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 Descriptors
D
Description and Operation
AUTOMATIC DAY-NIGHT MIRROR DESCRIPTION AND OPERATION
Inside Rearview Mirror with the Automatic Day-Night Feature System
Operation
The inside rearview mirror uses 2 photocell sensors. One sensor is the
headlight sensor, located on the
face side of the mirror. The headlight sensor is used to determi
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