Installation Procedure

2018 Chevrolet Sonic Premier, 4D Sedan, Automatic TransSECTION Installation Procedure
  1. GM1998830Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Use care when removing or installing the filter plate assembly. A broken or missing retaining tab may not adequately secure the filter plate to the control solenoid valve assembly, resulting in possible damage or contamination.

    Install a NEW control solenoid valve assembly filter plate (4) to prevent fluid leaks past the fluid seals.

  2. Install the control solenoid valve assembly with transmission control module (3).
  3. Hand start the control valve body bolts (1, 2).
  4. GM2000158Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

    Secure the 12 control solenoid valve assembly bolts (2) M6 x 97 and tighten in sequence to 11 N.m (97 lb in).

  5. Secure the 3 control valve body bolts (1) M5 x 40.5 and tighten in sequence to 7 N.m (62 lb in).
  6. Connect the input speed sensor electrical connector (1).
  7. Connect the output speed sensor electrical connector (2).
  8. Install the transmission control valve body cover. Refer to Control Valve Body Cover ReplacementΒ .
  9. After repairs, refer to Control Module References for programming and set up procedures.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.