2018 GMC Terrain SLFACTORY OEM SERVICE PROCEDURE

Engine Control Module Bracket Replacement

Fig 1: Engine Control Module Bracket
GM4592908Courtesy of GENERAL MOTORS COMPANY
Callout Component Name

Preliminary Procedures

  1. Engine Control Module Replacement 
  2. Reposition away Engine Coolant Air Bleed Hose@Engine Control Module Bracket - Engine Coolant Air Bleed Hose Replacement (Turbocharger Coolant Return pipe to Water Outlet, LYX)Engine Coolant Air Bleed Hose Replacement (Radiator Surge Tank to Turbocharger Coolant Return Pipe to Radiator, LYX)
  3. Remove wiring harness from engine control module bracket.
1 Engine Control Module Bracket
Procedure 
Release retaining tab to remove bracket from battery tray.
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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.