Select start withignition switch and sometimes nothing happens. No other problems are seen. All other instrument indiations seem normal. Keep trying and, so far, it will start.

this is the generation of bad GM IGN switches.

Sounds like your fuel pump is about to fail. Have pressure check run on fuel pump. If low then replace.

could be the shifter when its not engaged in park all the way it prevents it from starting

Could be a bad alternator.. It may not be holding charge. Or your starter could have failed.

Though I've had the same problem and it was a dead battery in my vehicle. Had enough power, but to keep the car on..

The most common cause of no crank is a faulty neutral safety switch.
The switch prevents you from cranking the engine in gear.

You didnt list the type of car this is, the most common thing that causes this is the starter, i just had a saturn, the customer had the same problem we told her it may be the starter but cant be 100% sure until it actted up, she didnt want to replace it unless we were sure, so we kept and drove the car around for 5 days and finally the last day it didnt start and it was the starter , same problem turn key and nothing no noise and no start, i would have the starter replaced and go from there, its a mater of time before the car just wont start,hope this is helpful.

Check to see if the black resistor on the key is not dirty or wet before using it. Wipe it off well to make sure there isn't any oil on it.

If this doesn't work take it to the dealer and ask about it.

Try putting the geashift in neutral when starting the truck. If it starts every time this way, your neutral safety switch or park interlock switch is broken. Let me know if this helps :)

This Too Is A Starter Problem, If >>The Battery Terminals Are Clean <<And >>The Starter Terminals Are Clean and TIGHT <<,I Would Wait Till It Wont Start Again and SMACK THE STARTER 2-3 times with a HAMMER then Try Starting it. If It Starts then it is The Starter. I KNOW this seems A Little UNCONVENTIONAL BUT For 30 Years This Technique Has Diagnosed HUNDREDS of STARTER Problems for me.

the problem is your ignition switch.

the connection with the start contact is sometimes missing.

if you want to save money, you can trace the starter wire and hook up a push button wire to start your starter. the other lead of the wire goes to the ignition switch to from the " on " lead so that if you turn off your key, there is no accidental starting of your engine.

tnx 4 using fixya,

drcool