Buick Regal 2018-2026 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
SEE MORE:
Alcohol/Contaminants-In-Fuel Diagnosis
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.
Test Description
Rear Wheel Drive Shaft Replacement - Left Side
Special Tools
DT-45859 Axle Remover
Equivalent regional tools: Special Tools
Removal Procedure
1. Raise and support the vehicle.
2. Remove the left rear tire and wheel assembly.
3. With the aid of an assistant holding the brake pedal down, use a breaker bar
and the proper size socket to
loosen
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