Buick Regal 2018-2025 Service Manual / Transmission / Transmission Cooling System / Diagnostic Information and Procedures
Buick Regal: Diagnostic Information and Procedures
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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
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Tire Changing
Removing the Spare Tire and
Tools
Jack
Wrench
Tow Hook (If Equipped)
Extension Bolt
Insulator Pad (If Equipped)
To access the spare tire and tools:
1. Open the liftgate.
2. Remove the spare tire cover.
3. Turn the retainer nut
counterclockwise and remove
the spare tire. Place the spare
tire
Bluetooth Malfunction (without IO5/IO6)
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.
Refer to Diagnostic Procedure Instructions provide an overview of each
diagnostic category.
Circuit/S
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