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Key Replacement (No Spare Key Available)

  1. If ignition key is lost, determine mechanical code from code on ignition key lock cylinder. Code may also be determined from dealer invoice for the car, or from Chevrolet zone office. Cut new key to mechanical code. Use a blank VATS (PASS) test key which has no resistance pellet.
  2. Key will be used to operate ignition switch for remaining steps. Remove panel under steering column. Disconnect 2-pin connector (C281) in the wire leading into steering column. Insert male half of connector into the female pigtail connector from the Interrogator (J-35628).
  3. Set key code selector on the interrogator to one. Attempt to start engine, using key made in step 1). If engine starts, key code selector is set to correct electrical code. Cut a new key having this electrical code. This key will be customer's replacement key.
  4. If engine does not start, turn ignition switch to OFF, then turn the Key Code Selector to the next higher position. Wait 4 minutes and attempt to restart engine using new electrical code. Use the 4-minute timer on the Interrogator to indicate the 4-minute interval.
  5. Start the timer by pressing START rocker switch. Red indicator will turn off at end of 4 minute interval. This procedure must be repeated until engine can be started. Cut new key having the electrical code which allowed car to start.
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