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Gary, Chevy Technician
Category: Chevy
Satisfied Customers: 16738
Experience:  15 years GM master tech
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I have 04 aval with 200miles that just began starting then

Customer Question

i have 04 aval with 200miles that just began starting then immediatly stopping. this problem is intermediate. took vehicle to auto repir shop and there are no trouble codes on the computer. it has 5.3 engine. sometimes the lock through the vehicle appears on the dash. any ideas? also it will eventually start for afew days and then go back to stopping and eventualy starting after 20 plus tries. thanks
Submitted: 10 months ago.
Category: Chevy
Expert:  Gary replied 10 months ago.

this is a 2004 Alalanche ?

when there will crank over and fire up then stall the issue is the theft lock system has been activated

as long as it will physically crank over then this should be a theft lock issue

since the light will also come on showing the lock this issue usually comes down to the ignition lock outer lock case that houses the passlock sensor not reading the key correctly

if this does this with another key then replacing the passlock sensor should correct this issue you are having

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