last week me and my son took a little trip from knoxville to indiana in
the vette about 200 miles in we stopped for a cup of coffee came out
turn the key on nothing the lights in the dash came on but when i turnedthe key nothing and i noticed the dash lights went out then i remembered it had done this once before and my buddy saids oh its just an automatic c5 they all do that well i turned the key off tried it again started right up never done it again when we got home [ by the way avereged over 30 mpg on trip] i checked the codes must have
been 10
whats goin on thanks for any advice

 

Might want to post the codes and/or do a search on Diagnostic Codes to decipher.

 

How old is your battery--when it starts to go these cars do all kinds of crazy ****

 

Would take a guess here that your ignition switch is dying. Check Bill's electrical post at the top in the sticky section.

 

the battery is about 2 yrs old here the codes after the ignition failed
b2732 p0420 po0430 po0650 po1571 u1040 u1096 u1064 u1016
thanks for the help

 

I know its a different animal, but my cheby truck did that when the battery was low. It caused the anti-theft to act crazy weird!

ps: periods (.) are your friends. Don't be scared of them.

 

P0420 TWC System Low Efficiency Bank 1
P0430 TWC System Low Efficiency Bank 2
P0650 MIL Control Circuit
P1571 ASR Desired Torque
U1040 Loss of Communications with TCS
U1096 Loss of Communications with IPC
U1064 Loss of Communications with BCM
B1016 Loss of Communications with PCM

I was not able to find a code reference for B2732 although I would guess its in the PassKey Detection Circuits.

This all appears to point in a couple of directions. First, I think it would be prudent to send a PM to Bill Curlee about this as he's the electrical guru. Learning from him, I'm thinking about this pointing in more than one direction so I'm simply not sure. Bad iginition switch is certainly up there. Low voltage from the battery is another therefore checking the battery connections both at the battery and the starter as well as testing the static voltage itself. There are accordian tubes between the doors and there is a wire that Bill found that will short to the frame causing lots of wierd problems. Bill's got pictures of that. Also, the BCM itself in the passenger footwell, please check it for any water on it, or in it. Again, Bill's the expert. Look at the stop in the sticky section for his electrical posts. The one code about the loss of comm to the BCM, will stop it from running for sure. Hope this helps

 

First thing I would check is make sure your battery cables are still tight. I had this same problem and my positive cable had backed out a thread or two letting it short out at times. Mine also didn't throw any codes though so yours may be a bit worse.

 

I'm with Volk. Happened to me last week --- went to start the car - no power. Try a minute later, it starts right up. Happened again last night -- go to start the car - no power. Check the battery cables and the negative cable was loose. The loose connection on the battery threw all sorts of codes.
Check the easy stuff before you take it in.

 

thanks
i checked the battery cables a littl looser than i would have wanted them to be we will se how it goes
gorghamak

 

Was your battery the problem ? Get a yellow top Optima when you go to replace it IMHO

 

Empty

 

jus loose cable tnx