2018 Buick Regal BaseFACTORY OEM SERVICE PROCEDURE

Engine Compartment Components

WARNING: This page is about a different car, the 2020 Buick Regal TourX, 2020 Buick Regal, 2019 Buick Regal TourX, and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
GM4801256Courtesy of GENERAL MOTORS COMPANY
Engine Compartment Components

Component Name Callout
B19B Brake Booster Vacuum Sensor B19B Brake Booster Vacuum Sensor 1
M75 Windshield Wiper Motor M75 Windshield Wiper Motor 2
F100L Hood Hinge Actuator - Left F100L Hood Hinge Actuator - Left (B3T) 3
Q37LF Shock Absorber Actuator - Left Front (F45) Q37LF Shock Absorber Actuator - Left Front (F45) 4
X50A Fuse Block - Underhood X50A Fuse Block - Underhood X1 , or X50A Fuse Block - Underhood X10 , or X50A Fuse Block - Underhood X2 , or X50A Fuse Block - Underhood X2 (LTG) , or X50A Fuse Block - Underhood X3 (LGX) , or X50A Fuse Block - Underhood X4 , or X50A Fuse Block - Underhood X5 (A53) , or X50A Fuse Block - Underhood X5 (AH8) , or X50A Fuse Block - Underhood X6 , or X50A Fuse Block - Underhood X7 (LGX) , or X50A Fuse Block - Underhood X8 , or X50A Fuse Block - Underhood X9 5
P12L Horn - Left P12L Horn - Left 6
P25 Power Sounder Content Theft Deterrent Alarm Module P25 Power Sounder Content Theft Deterrent Alarm Module 7
X50D Fuse Block - Battery X50D Fuse Block - Battery X1 , or X50D Fuse Block - Battery X1 (LGX) , or X50D Fuse Block - Battery X1 (LTG) , or X50D Fuse Block - Battery X2 (LGX) , or X50D Fuse Block - Battery X2 (LTG) , or X50D Fuse Block - Battery X4 , or X50D Fuse Block - Battery X5 , or X50D Fuse Block - Battery X6 , or X50D Fuse Block - Battery X7 , or X50D Fuse Block - Battery X8 , or X50D Fuse Block - Battery X9 (LGX) 8
B233B Radar Sensor Module - Long Range (UGN) B233B Radar Sensor Module - Long Range 9
B55 Engine Hood Switch B55 Engine Hood Switch 10
K17 Electronic Brake Control Module K17 Electronic Brake Control Module 11
B20 Brake Fluid Level Switch B20 Brake Fluid Level Switch 12
B118B Windshield Washer Fluid Level Switch B118B Windshield Washer Fluid Level Switch 13
G24 Windshield Washer Pump G24 Windshield Washer Pump 14
P12R Horn - Right P12R Horn - Right 15
G36 Auxiliary Heater Coolant Pump G36 Auxiliary Heater Coolant Pump 16
Q37RF Shock Absorber Actuator - Right Front (F45) Q37RF Shock Absorber Actuator - Right Front (F45+GNQ) , or Q37RF Shock Absorber Actuator - Right Front (GNQ) 17
F100R Hood Hinge Actuator - Right F100R Hood Hinge Actuator - Right (B3T) 18
Factory Service Tools

Use the Manual With the Right Hardware

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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