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Gm Tech (Cam)
Gm Tech (Cam), GMC Mechanic
Category: GMC
Satisfied Customers: 1670
Experience:  GM Grand Master Technician 2007. 14 year experience.
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2004 GMC Yukon no crank no start has light on car with lock

Customer Question

2004 GMC Yukon no crank no start has light on car with lock they it
Submitted: 10 months ago.
Category: GMC
Expert:  Dave Nova replied 10 months ago.
Have you tried security relearn procedure?
Customer: replied 10 months ago.
How do I do that
Expert:  Dave Nova replied 10 months ago.
1. Turn ignition on.2. Attempt to start the engine, and then release the key to the “ON” position.3. Observe the “SECURITY” indicator light. After 10 minutes the “SECURITY” indicator lightwill turn off.4. Turn ignition to the “OFF” position, and wait 10 seconds.5. Attempt to start the engine, and then release the key to the “ON” position.6. Observe the “SECURITY” indicator light. After 10 minutes the “SECURITY” indicator lightwill turn off.7. Turn ignition to the “OFF” position, and wait 10 seconds.8. Attempt to start the engine, and then release the key to the “ON” position.9. Observe the “SECURITY” indicator light. After 10 minutes the “SECURITY” indicator lightwill turn off.10. Turn ignition to the “OFF” position, and wait 10 seconds.11. Vehicle has now learned the new password. Start the engine.
Expert:  Dave Nova replied 10 months ago.
Let me know if this works for you.Dave
Customer: replied 10 months ago.
K
Customer: replied 10 months ago.
Nothing
Expert:  Dave Nova replied 10 months ago.
Does the starter not engage at all when the key is turned to the start position?
Customer: replied 10 months ago.
No it won't do anything the light with the lock car is on with or without key
Expert:  Dave Nova replied 10 months ago.
Open the underhood fuse panel and place your hand on the STARTER relay. Have someone else turn the key to Start position. Does the relay click when key is turned?
Customer: replied 10 months ago.
Starter relay does not click
Expert:  Dave Nova replied 10 months ago.
Are all of the larger fuses in the underhood panel good? Do you have access to a test light or voltmeter?
Customer: replied 10 months ago.
I have both and yes all fuses are good
Expert:  Dave Nova replied 10 months ago.
Test voltage at CRANK fuse in the underhood fuse panel with the key in the Start position.
Customer: replied 10 months ago.
Battery voltage
Customer: replied 10 months ago.
It has code b2961
Expert:  Dave Nova replied 10 months ago.
That is a security system related code. When doing the relearn, did the security light turn off at the end of each 10 minute period?