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 GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 29494
Experience:  GM Grand Master Technician 2007. 14 years experience.
10949255
Type Your Chevy Question Here...
GM Tech (Cam) is online now
A new question is answered every 9 seconds

2000 GMC Yukon: Security light..light wont..my keyless entry remote

Resolved Question:

My 2000 GMC Yukon Security light won't go off and will not let me start the car. Also, my keyless entry remote will not work.
Submitted: 8 years ago.
Category: Chevy
Expert:  GM Tech (Cam) replied 8 years ago.

WelcomeCustomer Here is the process for relearning the security system. Chances are good you need to replace the passlock sensor, which is part of the ignition cylinder housing. Please ask if you need more information. Thanks.

30 Minute Re-Learn Procedure

  1. Turn ON the ignition, with the engine OFF.
  2. Attempt to start the engine, then release the key to ON (vehicle will not start).
  3. Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn OFF.
  4. Turn OFF the ignition, and wait 5 seconds.
  5. Repeat steps 1 through 4 two more times for a total of 3 cycles/30 minutes ( the vehicle is now ready to relearn the PasslockTM Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK).

    Important: The vehicle learns the PasslockTM Sensor Data Code and/or password XXXXX the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.

  6. Start the engine (the vehicle has now learned the PasslockTM Sensor Data Code and/or password).
  7. With a scan tool, clear any DTCs if needed (history DTCs will self clear after 100 ignition cycles).
GM Tech (Cam) and 5 other Chevy Specialists are ready to help you
Customer: replied 8 years ago.
The security light flashes on and then the batter light comes on right behind it. it flashes on and off. What do I do next?
Customer: replied 8 years ago.

My 2000 GMC Yukon Security light won't go off and will not let me start the car. Also, my keyless entry remote will not work.

 

Optional Information:
2000 Yukon SLT Vortec 5300 V8

Already Tried:
The security light will not go off and the keyless transmitter will not work. Also, the car will not start. How do I reset the security system to get the car started or how do I override the security to get the car started?

 

Also, can anyone call me at XXX-XXX-XXXX cell. I am stuck with the truck not working.

Related Chevy Questions