TermnEatr

iTrader: (24)

Long story short she got in our 03 tahoe yesterday to leave work and she said when she started it the car honked. My experience with this is a low battery since it would honk if I had to jump it off in the past. I've noticed the volt gauge always at 12 and never moves at all went out to start it this morning and it would start then immediately stall no matter how long I tried that's what it would do with no reaction to the throttle to try and keep a idle. It has a new battery could this be the alternator not allowing it to run? I figured if it started the battery would completely drain then die but stay on till then.

jlrz28

iTrader: (7)

Any codes or SES?

TermnEatr

iTrader: (24)

No and the car has a lack of voltage with the key on the gauges won't move at all and the door locks won't work. But it has enough juice to turn over which to me seems weird.

killerwhale

Check all your fuses and see if your security light is blinking it might be in theft mode

TermnEatr

iTrader: (24)

Well a little update. She called around 4 when I was on the way home and said it started and will stay running. I replaced the alt just for safety measure plus I'm not too sure the mileage on the old one. So now it basically narrows down to the cold weather this morning that could be the only reason why it would've been worse is the single digit temps in the am the past two days. So what would make it start and immediately stall due to cold weather? Egr?

02CamaroSSLE

iTrader: (5)

check the battery neg terminal and where the cable connects to the frame or motor. good luck on the fix.

chrysler kid

iTrader: (14)

Starting and dying immediately can be a vacuum leak. Check the pcv hose, and also check your battery terminals and grounds as mentioned above

Spartan7

iTrader: (7)

Could be the ignition switch going out. Google some videos of bad ignition switches on similar trucks/suburbans and see if it matches what you're experiencing. Hopefully it's not that, because the ignition switch for these vehicles isn't cheap.

Something else to consider, do you have an aftermarket alarm on it?

TermnEatr

iTrader: (24)

The car has been running fine now I'm pretty sure it was cold weather that made it stall just don't know what is affected by cold weather that would do that.