I have changed the lock cyl and it was good for 4 days and then it started again. Truck has 261,000 miles on the 5.3 engine and auto transmission. Any ideas or solutions? Maybe the ignition switch?
Buzzkpr
If you have a "flashing security light" you are in a 10 minute fuel system lockout. You have a Passlock 2 system failure.
It is very rarely the lock cylinder.
First, the simple step, remove the upper (or the complete) steering column cover.
Find the tiny 3 wire connector attached to the ignition cylinder housing. Remove the 3 wire male connector out of the housing.
Remove only 1 wire at a time out of the male connector using small like sewing needle device to release the female pin. Find a small pair on needle nose pliers and "gently squeeze" the female connector smaller. After you done, ...reinstall it back into the connector. Do it for the other 2 wires.
As a final step, find a "very small" nylon tie strap, ...cut about 3/4's of an inch or slightly smaller and wedge the point end into the side of the installed 3 pin connector.
After you done, the truck should start. If not, replace the Passlock 2 ignition cylinder housing which means tearing the whole upper half of the steering column. When you do that, the battery "must" be disconnected as not to deploy the air bag.
Will supply pictures below.
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It is very rarely the lock cylinder.
First, the simple step, remove the upper (or the complete) steering column cover.
Find the tiny 3 wire connector attached to the ignition cylinder housing. Remove the 3 wire male connector out of the housing.
Remove only 1 wire at a time out of the male connector using small like sewing needle device to release the female pin. Find a small pair on needle nose pliers and "gently squeeze" the female connector smaller. After you done, ...reinstall it back into the connector. Do it for the other 2 wires.
As a final step, find a "very small" nylon tie strap, ...cut about 3/4's of an inch or slightly smaller and wedge the point end into the side of the installed 3 pin connector.
After you done, the truck should start. If not, replace the Passlock 2 ignition cylinder housing which means tearing the whole upper half of the steering column. When you do that, the battery "must" be disconnected as not to deploy the air bag.
Will supply pictures below.
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