Key won't turn in ignition

ignition keylock cylinder broken or could have the wrong ignition key.

Pull the Battery Post off the Battery then the fuse If that don,t work Cut the Horn Wire To It

If it's an automatic check fuse #15 wether it's a stick or automatic you should have power at the red & black wire coming out of your ignition switch when you turn key to start postion and power at the red wire going into switch at all times. if no power coming oit on the red/black wire you need an ignition switch. if there is power coming out of switch try putting car in nuetral (for auto trans). if still nothing you'll need to check for power at small wire going to starter when key is turned to start. if has power then need starter if no power you'll need to check starter interlock relay.

Make sure your steering wheel isn't locked. Sometimes a key won't turn until you jiggle the wheel while trying to turn the key.

assuming the 2005 model year stil uses viper security systems...the chip in the key carries a magnetic resistance frequency. if the chip is damaged or corroded the frequency will change and wont engage the igntion. you can either get another key made (about 75 dollars) or bypass the ignition lockout feature.

This link will help you out. Has alot of information on the system.

http://vatspasslockpasskeysecurityhelp.yolasite.com/

i know industry jargon can be confusing, but lets try this. if it turns over but won't start, it could be your ''ignition module'' that sits on top of the vave cover on the motor or it might be the fuel pump or filter. make sure when you crank the engine that the key is all the way turned or it may not always make a proper contact to activate the ignition module. iv'e seen this before & had to change the ignition switch & all worked ok after that. i would need to know engine lt size to give you more details on the matter. please get back to me.

I have had this happen on my 98 Voyager. Just have a new key cut. This new key will sometimes cure the problem. The older keys get worn out and won't unlock the ignition. Try this before a much more expensive and time consuming change of the ignition.

Ignition - Key Stuck In Ignition Switch/Won't Turn Bulletin No.: 06-02-35-005 Date: February 28, 2006 TECHNICAL Subject: Key Stuck in Ignition, Key Will Not Return to Off Position, Shifter Button Won't Release in Park Position (Adjust Shifter Detent Finger) Models: 2002-2005 Chevrolet Monte Carlo Condition Customers may comment on any of the following conditions: - The key is stuck in the ignition cylinder. - They cannot return the key to the off position to remove the key. - The shifter button won't release in the park position. Cause This condition may be caused by the detent finger shifting over time. This may result in mis-alignment and binding of the shift rod on the shift position guide.
WHERE YOUR SHIFTER IS YOU WILL HAVE TO TAKE IT APART ..MAYBE THE RUBBER BOOT IS IT THE WAY,OR THE SHIFT LOCK SELINOID WHENT BAD

This happened to to me with my ranger. I went and bought in ignition and a junk yard and no problems after that. That way your not out of a lot of money.