2005 chevy tahoe wont start

will not turn on not even lights ? What lights ? headlamps - instrument cluster telltale lights ? What happens when you turn the key to start ? nothing - no clicking noise etc... Voltage drop testing of the battery cables an connections should be done if nothing works an battery is good . No power getting to fuse/relay power distribution box . Videos on youtube The Easiest Way to Test Your Car's Electrical System for Voltage Drop - Using a DVOM - YouTube

That is just like a 2005 buick century, and it is normal. When you open the driver's door, the radio turns off. Does yours turn off too?

if the security light stays on and is not blinking when the key is turned on , (but do not try to start the car). then you can do a key computor. communication .turn key on and off and[ on ]leave it on for exzactly 10 minutes.the security light will turn off, now take key back to off and now start the car.

could be fuel pump or even crank or cam , timing sensor. Did it start running strange before this?

yes absolutely the key has to be properly programmed. You will need to take it to a dealer.

The main grounds wil be on the chassis and the transmission. There will also be some miscalanous grounds throughout the engine compartment. A lot of the grounds for the inside if you dash will be located on the underside of the dash connected to the metal frame that the dash mounts to

GM OIL LIFE SYSTEM - RESETTING
Reset the oil life monitor when the oil has been changed, use the following procedure.
1. Turn the ignition key to the RUN position.
2. Fully push and release the accelerator pedal 3 times within 5 seconds.
3. If the Change Oil Soon light flashes, the system is resetting.
4. Start the vehicle.
5. The oil life will change to 100%.
6. If the Change Oil Soon light comes back on, the system has not reset. Repeat the procedure.

I found this URL on internet http://www.chefseattle.com/blog/site-news/suburban-rear-liftgate-wont-unlock-how-to-fix/ If your vehicle is similiar maybe it can help.

Sounds like a starter problem, suggest you get it checked at your local trusted mechanic the next time it starts... If the starter is your problem it wont start for many more times.

Hi:
When your vehicle says : unknown driver, instead of Driver 1 or driver 2, you have had your battery totally dead. so dead that all the programming was lost, the part about not staying started, or not going into gear is a bit baffling, unless your alternator is the real problem, and the battery has just enough charge to barely start your truck, and may need to be fully charged first and stay running . You will need to do remote and seat reprogramming, when you get this figured out