2018 GMC Terrain SLFACTORY OEM SERVICE PROCEDURE

Circuit/System Verification

    NOTE:

    A DTC may set depending on certain driving conditions and would not require a component replacement. Aggressive steering may cause reduced steering assist. Discuss with the customer about the driving conditions when the concern occurred.

  1. Operate the vehicle within the Conditions for Running the DTC. Verify the DTC does not set.
    • If the DTC sets 
    1. Ignition/Vehicle - Off
    2. Verify the following conditions do not exist: Steering = Binding or Sticking
    • Go to next step: If the DTC is not set 
  2. All OK.
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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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.