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Paul M ASE Master
Paul M ASE Master, ASE Master Tech
Category: Chevy
Satisfied Customers: 4683
Experience:  ASE Master Tech 20+ Years
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2005 chevy uplander: it wont start..anti theft system..disable

Customer Question

I have a 2005 chevy uplander it works great but now it won't start at all it reads anti theft system then starting disable. What can I do fix it.
Submitted: 6 years ago.
Category: Chevy
Expert:  Paul M ASE Master replied 6 years ago.

Hello and thank you for using Just Answer

 

do you have another key you could try?

 

or you could try a relearn on the key

 

to do this turn the key to crank for 2 seconds then release to the run position and leave it in the run position for 12 minutes...

 

you can then turn the key back off and then try starting if it does not work repeat 2 more times

 

if you still have problems you may need to replace the lock cylinder

 

let me know how you make out

 

Paul