I have a 2000 GMC Sierra 1500 5.3L V8 that I was driving for the past few days without issue. Today I took it for a ride and stopped for gas, after paying I got in turned the key and nothing happened. I have power across the dash, the radio, headlights, hood lights and dome lights all work. I have a yellow security light that flashes upon entry to the vehicle in the message center. When I turn the key I don't her the syllanoid clicking and the truck doesn't even start to turn over. Could this be an electrical issue? A starter? An ignition switch? or A Problem with the security system? Any advice would be greatly appreciated.

 

I had that happen on my wife's Escalade and it was the starter. Luckily it happened in our driveway. I tapped the starter with a tire iron and it started right up. I thought it was just corrosion so I let her drive it. It was fine for about a month and it did it again. I remember that both times it did it it had rained the day she drove it home from work. I am not sure if that was coincidental or not but after the 2nd time I installed a new starter and it has been fine ever since. Hope this helps...good luck!

 

Thanks for the tip, I'll try that when I get home today and see if that's what is going on.

 

if its the security the light would flash rapidly try leaving the ignition on for ten min. the security light should stay solid and the truck will start.

 

Does it matter if the door is open or closed? When I turn the key in the ignition the security light goes out and the battery light comes on. Do I need to turn the key far enough that I have to hold it or are you talking about turning it far enough that the power inside the car is on?

 

in most gm vehicles you just have to turn the ignition to the on position, you dont have to hold it.

 

Thanks for all the help. I found out it was not a security issue at all. The wire that connects the solenoid to the starter was severed. I put a new starter in and the truck is as good as new.

Mark