2010 Hummer H3T AlphaFACTORY OEM SERVICE PROCEDURE

Installation Procedure

    Fig 1: Removing/Installing Shift Lock Actuator
    GM1199544Courtesy of GENERAL MOTORS CORP.
  1. In DRIVE position, depress the shift lock actuator button and realign into the shiftier lever.
  2. Push lever to NEUTRAL.
  3. CAUTION: Refer to Fastener Caution .
  4. Install the top screw through the lever slot.

    Tighten:Β  Tighten the actuator screw to 1.65 N.m (15 lb in).

  5. Shift lever to LOW.
  6. Install the screw at the rear of the shiftier assembly.

    Tighten:Β  Tighten the actuator screw to 1.65 N.m (15 lb in).

  7. Fig 2: Disconnecting/Reconnecting Shift Lock Actuator Electrical Connector
    GM1341666Courtesy of GENERAL MOTORS CORP.
  8. Connect the electrical connector (3).
  9. NOTE: After assembling the shift lock actuator, turn the ignition forward but do not start (auxiliary position) and attempt to pull the lever from PARK with or without the brake pedal depressed to verify there is no gear access without the brake pedal depressed.
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:

  • 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.

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