2017 Buick Envision BaseFACTORY OEM SERVICE PROCEDURE

Forward Range Radar Module Replacement

Fig 1: Forward Range Radar Module
GM3910820Courtesy of GENERAL MOTORS COMPANY
Callout Component Name
Preliminary Procedure 
Remove Front Bumper Fascia. Refer to Front Bumper Fascia Replacement
1 Forward Range Radar Bracket Bolt (Qty: 3)
CAUTION:

Refer to Fastener Caution .


Tighten 
2.5 N.m (22 lb in)
2 Forward Range Radar Bracket
3 Forward Range Radar Module Nut (Qty: 3)
CAUTION:

Refer to Fastener Caution .


Tighten 
9 N.m (80 lb in)
4 Forward Range Radar Module

Procedure

  1. Disconnect the electrical connector.
  2. Refer to Control Module References for programming and setup information, if required.
  3. Use a digital angle gauge to align the forward range radar module vertically (at the edge or on the bracket behind the module).
  4. Prior to adjustment to the module, the following steps must be taken.
    1. Remove any snow, ice or mud from the vehicle.
    2. The vehicle must have a full tank of gas.
    3. If any service has been performed on the vehicle, make sure that all of the components are back in their original place.
    4. The vehicle must be on a level surface.
    5. Do not load any cargo in the vehicle.
    6. The vehicle must contain approximately 75 kg (165 lb) on the driver seat.
    7. Inflate the tires to the proper pressure.
    8. Rock the vehicle in order to stabilize the suspension.
    9. Adjust as needed.
NOTE:
  • The digital angle gauge must have an accuracy of ±0.5 degrees (9 mm/m).
  • The vertical position of forward range radar module is 90 degrees (±3 degrees).
Factory Service Tools

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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.