2025 Chevrolet Trailblazer RS, 4WDFACTORY OEM SERVICE PROCEDURE

Side Obstacle Detection Control Module Replacement

GM5282756Courtesy of GENERAL MOTORS COMPANY
Callout Component Name
Preliminary Procedure 
Rear Bumper Fascia Replacement
1 Side Object Sensing Alert Module Bolt
Tighten 
2.5 N.m (22 lb in)
2 Side Object Sensor Module - Left

Procedure

  1. Disconnect the electrical connector.
  2. Perform the necessary programming and setup procedure: B218L Side Object Sensor Module - Left: Programming and Setup
3 Side Object Sensor Module - Right

Procedure

  1. Disconnect the electrical connector.
  2. Perform the necessary programming and setup procedure: B218R Side Object Sensor Module - Right: Programming and Setup
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.

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