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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Parking Brake Actuator Replacement (GNQ)
Removal Procedure
WARNING: Brake Dust Warning
1. Set the park brake in Service Mode.
Manual Method
Change the transmission gear to neutral or park position.
Press and hold the push button start switch for 10 seconds, with the
brake pedal not applied.
This will place the vehicle in Service Mode
Adjust Link Replacement (FWD)
Removal Procedure
1. Remove the tire and wheel assembly.
2. Rear Wheel Speed Sensor Replacement (Front Wheel Drive) Rear Wheel Speed
Sensor Replacement
(All Wheel Drive) - Remove.
3.
Rear Suspension Adjust Link Nut(1) - Remove.
4. Rear Suspension Adjust Link Cam(2) - Remove.
5.
Rear Suspension
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