Forward Range Radar Module Alignment (Chevrolet / GMC)

CAUTION:

Always use care when handling the forward range radar module and bracket. Improper handling can cause damage to the module or bracket and affect the functionality of the system.

Remove the front bumper fascia. Refer to Front Bumper Fascia Replacement (GMC)Front Bumper Fascia Replacement (Chevrolet) .
Inspect the forward range radar module for damage. Refer to Forward Range Radar Module Inspection (Chevrolet / GMC) .
The alignment of the forward range radar module is performed under the following vehicle conditions:
- With an empty vehicle:
  - There shall not be any person in the vehicle
  - Specific equipment can remain in the vehicle
  - Luggage must not exceed 5 kg (11 lb)
- The vehicle must stand on a flat surface. The level of the ground must not vary by more than +/-7mm/m. This corresponds to 0.4 degrees, using a water bubble level.
- Vehicle tires must have specified air pressure.

Fig 1: Using Water Bubble Level To Align Forward Range Radar Module Vertically

Courtesy of GENERAL MOTORS COMPANY

NOTE:

Do not press the water bubble level too tight against the face of the module.

Use a water bubble level (2) to align the forward range radar module vertically as shown in the graphic.

NOTE:

The water bubble level must have an accuracy of +/-0.5 degrees (9 mm/m).
The vertical position of forward range radar module is 90 degrees.

Turn the screw (1) until the water bubble level has a value of 90 degrees.