Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Inspection Procedure
2018 Buick Regal BaseSECTION Inspection Procedure
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.
CONTROL MODULE DTC CHECK - Using a scan tool, perform the Vehicle DTC Information function - Verify there are no current control module DTCs set. If any DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Check the alignment of the forward range radar module (1). The forward range radar module has to be aligned vertically and parallel to the front bumper impact bar.
- Inspect all studs (2) for proper seat. If damaged, replace the bracket. Refer to Forward Range Radar Bracket Replacement .
- Inspect the forward range radar module bracket (3) for paint cracks and deformations. Do NOT repair any cracks or misalignments. If damaged, replace the bracket. Refer to Forward Range Radar Bracket Replacement .
- Inspect the forward range radar module (1) for paint cracks, scratches and deformations. Do NOT repair any cracks, scratches or misalignments. If damaged, replace the module. Refer to Forward Range Radar Sensor Replacement .
- Inspect the wiring harness plug and the terminal of the forward range radar module for any damage.
- Check the front bumper fascia energy absorber for damage and misalignment. Replace the front bumper fascia energy absorber if necessary. Refer to Front Bumper Fascia Energy Absorber Replacement .
- When installing the front bumper fascia ensure that absolutely no objects (e.g. Wiring harness, Snow, Sticks) are in front of the forward range radar module and between the forward range radar module and the front bumper fascia.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.