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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 410 (BATTERY, CHARGING SYSTEM AND STARTING SYSTEM)REPAIR INSTRUCTIONSBATTERY NEGATIVE CABLE DISCONNECTION AND CONNECTION (LHD WITH TOP POST)CONNECT PROCEDURE
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Connect Procedure

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Connect Procedure
WARNING: This page is about a different car, the 2009 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Battery Clamp
    GM2001603Courtesy of GENERAL MOTORS CORP.
  1. Connect the battery negative cable clamp to the battery (1).
  2. Rotate the clamp locking lever (2) into the locking position.
  3. Position the cover (3) over the clamp.
  4. Power sunroof calibration:
    1. Turn the ignition switch to the RUN position.
    2. Turn the power sunroof switch to the closed position. After the sunroof fully closes and the motor stops, press and hold in the switch for 3 seconds.
    3. Turn the power sunroof switch to the tilt position. After the sunroof reaches the tilt position and the motor stops, press and hold in the switch for 3 seconds.
    4. Turn the power sunroof switch to the full open position. After the sunroof is fully open and the motor stops, press and hold in the switch for 3 seconds.
    5. Turn the power sunroof switch to the closed position. After the sunroof fully closes and the motor stops, press and hold in the switch for 3 seconds.
  5. Power windows calibration:
    1. Repeat these steps for each window.
    2. Turn the ignition switch to the RUN position.
    3. Press the power window switch to the down position. After the window is in the full down position, press and hold the switch in the down position for 3 seconds.
    4. Press the power window switch to the up position. After the window is in the full up position, press and hold the switch in the up position for 3 seconds.
  6. Heat and A/C control head calibration:
    1. Turn the ignition switch to the RUN position.
    2. Simultaneously press the AUTO and OFF buttons, located on the heat and A/C control head, for at least 5 seconds.
    3. After initiation, the stepper motors will cycle from one stop to the other. You may hear the motors cycling while calibrating.
  7. Relearn the tire pressure sensor system, if necessary. Refer to Tire Pressure Sensor Learn .
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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.