How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask FixItMan Your Own Question
FixItMan, Master Technician
Category: Car
Satisfied Customers: 17085
Type Your Car Question Here...
FixItMan is online now
A new question is answered every 9 seconds

How do I unlock the anti theft system for my 2007 gmc sierra

Resolved Question:

how do I unlock the anti theft system for my 2007 gmc sierra
Submitted: 7 years ago.
Category: Car
Expert:  FixItMan replied 7 years ago.
HelloCustomer use the key relearn procedure below to reset the security system. If you need more help let me know.

  1. With an unlearned master vehicle key, turn ON the ignition, with the engine OFF.
  2. Observe the security indicator, after approximately 10 minutes the telltale will turn off.
  3. Turn OFF the ignition, and wait 5 seconds .
  4. Repeat steps 1-3 two more times for a total of 3 cycles or 30 minutes . Important: The TDM learns the key transponder information upon the ignition switch transition from OFF to ON. You must turn the ignition OFF before attempting to start the vehicle.
  5. With a master vehicle key, start the vehicle. The vehicle has now learned the key transponder information.
FixItMan and 14 other Car Specialists are ready to help you