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
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Displays and Gauges
SPECIFICATIONS
FASTENER SPECIFICATIONS
Reusable Threaded Fastener Tightening Specifications
NOTE:
All fasteners listed in this table can be reused after removal.
SCHEMATIC AND WIRING DIAGRAMS
INSTRUMENT CLUSTER WIRING SCHEMATICS
Power, Ground, Serial Data and Gauges
Indicators (LGX)
Indicators (L
Transmission Fluid Cooler Inlet Pipe Replacement (9T50 / 9T60)
Removal Procedure
1. Place a suitable container under the vehicle to catch any spilled
transmission fluid.
2. Front Wheelhouse Liner-Left Side - Remove.
3. Front Compartment Splash Shield-Right Side - Remove.
4.
NOTE: Cover or plug all open transmission fluid cooler pipe connection
points to h
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