2006 Pontiac grand prix starting problem,i turn the ignition on all the lights comes on ok but no crank on any kind of noise,the battery and cables are ok,could be the mobilizing or theft system problem,if anyone could help please let me know,thanks.

Check starter relay and fuse

What code is in there for the security system? Does the vehicle have a GM passlock? Is the warning light lit for the antitheft ? You can sit with the key on at least 4 minutes and as many as 10. If the light goes out, cycle the key and start the car. Then drive to get the code reader, ask for help, find the code and google it for a possible fix?

Danny thank you sfor tryng to help,but there is no warning light on the car's computer(DIC) the check engine light is on but that's because the wont start,i purchased the car with only one key and it says PK3 on it and 2 remotes,the also has factory remote start and that doesn't work either,i did check the starter and it's ok,so the only thing I can guess is mobilizing system and I don't know how to bypass that.

Lets pretend you scanned your enhanced group and read a 1632. Now google the code and read about how it applies to your car. You can decide if that is something you need. when you have a key it wont read, that code can be expected. The method for making it function can be your doing. there is a safe and simple way if that was your circumstances....... Saying things are OK in basic electrical without resistance tests, voltage drop tests, or verifying the voltage is available where it should be available, when it should be there, is likely going to continue to confuse you.............The cables at the battery can be disassembled, pry and pop the bolts out. slide the covers off. wire brush both sides of each and the battery's contact area for each. Take the wires off the starter, note where they go. draw yourself a pic. clean them all and reassemble tight without any added parts like washers. check and clean the power distribution box connecting cable connection. reassemble. connect the battery cables, be sure you havent a low battery. Test for power on the start enable at the starter while a helper tries to start. A 12v test light or volt meter will suffice............. If the cars in (P) and the brake is pressed and there is no security warning light in the instrument panel near the gauge indicators, there should be 12v on the start enable. Tap the starter with a hammer handle....... Report or respond to each and or all these and leave nothing unckecked. say if you decided to follow the website advice about a 1632 code. Then we can see if it should even be able to start. If your starter needs work, you may need to remove and bench test and repair/ replace it......report your findings here and someone can see where you are. Then advise.

You must also verify by asking your dealer, does this car have recalls or service bulletins that have not yet been performed? Have vehicle info including your vin at the ready when you call them. If you use a code reader and extract every typre of code available in your computer, write them down........ It does not think for you, ask the parts people how to obtain every possible code including the antitheft. take the tester to the vehicle and return it after. You can use a credit card. All these things I tell you have been helping, when helping people. Some cars we were able to get schematics for for a few quarters at the library.

www.bergerweb.net/alero/security. the car featured there is also a J-car

Things you do to your pontiac are your choice and your responsibility. Seeking help from GM is highly recommended......repairs you make on your own are up to you to decide.