WARNING: This page is about a different car, the 2016 Buick LaCrosse. However, it is still accessible from the selected car via links, so may be relevant.

Remove the front bumper fascia. Refer to Front Bumper Fascia Replacement .

Fig 1: Forward Range Radar Module

Courtesy of GENERAL MOTORS COMPANY

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 .
Inspect the forward range radar module (4) for vertical alignment. Refer to Forward Range Radar Module Alignment .
Check the 3 ball sockets (5) for fixed seating. If the ball sockets are damaged replace the ball sockets.
Inspect all studs (1) for proper seat. If damaged, replace the bracket. Refer to Forward Range Radar Module Replacement .
Inspect the forward range radar module bracket (2) for paint cracks and deformations. Do NOT repair any cracks or misalignments. If damaged, replace the bracket. Refer to Forward Range Radar Module Replacement .
Inspect the wiring harness plug (3) and the terminal of the forward range radar module for any damage.

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.

Safety Warning

Forward Range Radar Module Inspection

Use the Manual With the Right Hardware

When to See a Mechanic

Rather have a pro handle this?