My 02 Silverado 2500 hd has the stereo locked out and the security light is flashing how do I fix it

you need to tow it to a dealer for programming

To troubleshoot the issue,i suggest you to check the help link mentioned below:----

Power Steering Leaking Oil

http://technoanswers.blogspot.com/2012/11/power-steering-leaking-oil.html

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Also with these i suggest you to refer these help,oinks.
Once the problem is detected,these is to replace power steering pump and fluid running line:-----

In relation to these problem there are few solved help links,i suggest you to go through the list and click the required link:-----

Power Steering going out?

http://schematicsdiagram.blogspot.in/2012/04/power-steering-going-out.html

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How to Replace power steering pump on Chevy silverado 2500 HD?

http://technoanswers.blogspot.in/2012/02/how-to-replace-power-steering-pump-on.html

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How to replace Power steering rack and pinion gear on Chevy Silverado 2500 HD?

http://technoanswers.blogspot.in/2012/02/how-to-replace-power-steering-rack-and.html

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Power Recirculating Ball Steering Gear removal on Chevy silverado 2500 HD?

http://technoanswers.blogspot.in/2012/02/power-recirculating-ball-steering-gear.html

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Chevy Silverado 2500 HD steering wheel replacing Procedure?

http://technoanswers.blogspot.in/2012/02/chevy-silverado-2500-hd-steering-wheel.html

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Steering Wheel Locked?

http://schematicsdiagram.blogspot.com/2011/12/steering-wheel-locked.html

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How to Remove Power steering Pressure Hose on Dodge Stratus

http://schematicsdiagram.blogspot.com/2011/12/how-to-remove-power-steering-pressure.html

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How to replace power steering pump on Mitsubishi Diamante?

http://howtobyme.blogspot.com/2012/01/how-to-replace-power-steering-pump-on.html

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How to bleed power steering pump on Toyota?

http://repairhelpcenter.blogspot.in/2012/02/how-to-bleed-power-steering-pump-on.html

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How to replace power steering pump on Toyota Land cruiser?

http://repairhelpcenter.blogspot.in/2012/02/how-to-replace-power-steering-pump-on.html

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Steering service light ON GMC Sierra Denali?

http://technoanswers.blogspot.in/2012/02/steering-service-light-on-gmc-sierra.html

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Steering service light came on 2004 Pontiac Grand Prix

http://technoanswers.blogspot.in/2012/02/on-one-my-pontiac-grand-prix-relatred.html

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Check power steering message on Toyota?

http://schematicsdiagram.blogspot.in/2012/02/check-power-steering-message-on-toyota.html

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How to remove power steering pulley on 2002 Ford Taurus?

http://repairhelpcenter.blogspot.in/2012/03/how-to-remove-power-steering-pulley-on.html

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1992 Ford Aerostar Power steering and Alternator belt routing diagram?

http://carbeltrouting.blogspot.com/2011/12/1992-ford-aerostar-power-steering-and.html

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How to replace Power Steering Pump on Acura Car Models?

Also bleeding:

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-power-steering-pump-on.html

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How to replace Steering Linkage on Acura Car Models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-steering-linkage-on.html

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How to replace power steering pressure hose on mustang?

http://technoanswers.blogspot.in/2012/02/how-to-replace-power-steering-pressure.html

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STEERING SQUEAKS

http://alltypesofpartsreplacing.blogspot.com/2012/10/steering-squeaks.html

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Steering Column Diagram For 1990 Jeep Wrangler

http://schematicsdiagram.blogspot.in/2012/07/steering-column-diagram-for-1990-jeep.html

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How to replace Steering Wheel on Acura Car Models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-steering-wheel-on-acura.html

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How to replace Power Steering Pump on 1999 Acura TL?

http://howtobyme.blogspot.com/2011/11/how-to-replace-power-steering-pump-on.html

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These details will help.

Thanks.

racket pion stiring is out replace it

In relation to these problem there are few solved help links,i suggest you to go through the list and click the required link:-----

Power Steering going out? http://schematicsdiagram.blogspot.in/2012/04/power-steering-going-out.html

---------------
How to Replace power steering pump on Chevy silverado 2500 HD? http://technoanswers.blogspot.in/2012/02/how-to-replace-power-steering-pump-on.html
--------------- How to replace Power steering rack and pinion gear on Chevy Silverado 2500 HD? http://technoanswers.blogspot.in/2012/02/how-to-replace-power-steering-rack-and.html
------------- Power Recirculating Ball Steering Gear removal on Chevy silverado 2500 HD? http://technoanswers.blogspot.in/2012/02/power-recirculating-ball-steering-gear.html
----------- Chevy Silverado 2500 HD steering wheel replacing Procedure? http://technoanswers.blogspot.in/2012/02/chevy-silverado-2500-hd-steering-wheel.html
----------- Steering Wheel Locked? http://schematicsdiagram.blogspot.com/2011/12/steering-wheel-locked.html

---------------
How to Remove Power steering Pressure Hose on Dodge Stratus http://schematicsdiagram.blogspot.com/2011/12/how-to-remove-power-steering-pressure.html

------------
How to replace power steering pump on Mitsubishi Diamante?

http://howtobyme.blogspot.com/2012/01/how-to-replace-power-steering-pump-on.html

---------------
How to bleed power steering pump on Toyota? http://repairhelpcenter.blogspot.in/2012/02/how-to-bleed-power-steering-pump-on.html

---------------

----------How to replace power steering pump on Toyota Land cruiser?

http://repairhelpcenter.blogspot.in/2012/02/how-to-replace-power-steering-pump-on.html

-----------
Steering service light ON GMC Sierra Denali?

http://technoanswers.blogspot.in/2012/02/steering-service-light-on-gmc-sierra.html

---------
Steering service light came on 2004 Pontiac Grand Prix

http://technoanswers.blogspot.in/2012/02/on-one-my-pontiac-grand-prix-relatred.html

----------
Check power steering message on Toyota?

http://schematicsdiagram.blogspot.in/2012/02/check-power-steering-message-on-toyota.html

-------
How to remove power steering pulley on 2002 Ford Taurus? http://repairhelpcenter.blogspot.in/2012/03/how-to-remove-power-steering-pulley-on.html
---------1992 Ford Aerostar Power steering and Alternator belt routing diagram? http://carbeltrouting.blogspot.com/2011/12/1992-ford-aerostar-power-steering-and.html

----------------
How to replace Power Steering Pump on Acura Car Models?

Also bleeding:

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-power-steering-pump-on.html

--------------

How to replace Steering Linkage on Acura Car Models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-steering-linkage-on.html

---------------
How to replace power steering pressure hose on mustang? http://technoanswers.blogspot.in/2012/02/how-to-replace-power-steering-pressure.html

-------------
STEERING SQUEAKS http://alltypesofpartsreplacing.blogspot.com/2012/10/steering-squeaks.html
----------- Steering Column Diagram For 1990 Jeep Wrangler http://schematicsdiagram.blogspot.in/2012/07/steering-column-diagram-for-1990-jeep.html
------------- How to replace Steering Wheel on Acura Car Models?

http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-steering-wheel-on-acura.html

------------
How to replace Power Steering Pump on 1999 Acura TL?

http://howtobyme.blogspot.com/2011/11/how-to-replace-power-steering-pump-on.html

-------------

These details will help.

Thanks.

disconect the reverse light switch wires from the gearbox & bridge. If the lights come on it is a faulty switch.

scrap it

The steering wheel has to be removed and further troubleshooting to replace or replace the column or wheel can be performed.For complete step b step procedure.Click the link below :----http://technoanswers.blogspot.in/2012/02/chevy-silverado-2500-hd-steering-wheel.html
-----------This will help.Thanks.

I believe that the vehicle antitheft is tied into the drivers door lock. Maybe try disconnecting the battery for 2 minutes.

try changing the coolant temp sensor

that has something to do with the reprograming of your ingition key if you are having not starting problems i will recomend you to leave it alon but if you wnat to be in the safe side then call one of the mobile locksmiths guy or take it to them to see if the key has to be reprogamed, and try using only one single key for the ignition,
some time systems take a little be to reconigse a copi made key