Originally Posted by Desert Nomad

Well, took the 'Z' out for a drive yesterday. Beautiful day, warm and not much traffic. Was on a rural country road mabey 60-70 miles from home and then it started. First indication was the theft deterent system warning along with ABS service warning. So I stopped, restarted the car and the warning's went away. Not more than a mile down the road all hell broke loose. Just about all warning lights came on as follows:

Fuel went to '0'
Oil pressure '0'
Water temp '0'
door unlock warning
Service engine soon warning
Service fuel system
Red infl rest warning on
Turn signal in-op
ABS warning on
Emergency Brake Light on
Exhaust flaps open(noisy)
Radio in-op
Windows would not open or close
Electical system completely unstable.

I believe the car went into a reduce power mode, but not sure. I babied the car the all the way back home approximatley 60-70 miles praying that it wouldn't shut down entirely. Pulled into the driveway and shut the car off. It was dead as a door nail. I couldn't open the door from inside. Luckily the window was open(wouldn't close anyway) and opened the door from outside. The passenger door wouldn't open at all so the wife the wife had to climb out my side. You should of heard all the whinning and complaining. Anyway. to make a long story shorter, put the "Battery Tender" on for about 5 hours and everything was back to normal. Car started perfectly with no warning lights. Now, this was the same basic problem I had earlier this year but dealer said battery was bad, which they changed along with replacing the fob batts. Did a complete download and update the system. Everything seemed to be 'OK' at that time. Seems to me that the battery is supporting the system and not getting charged enough some how properly although I'm not seeing it on the volt meter in the cluster. I can't remember what it was when all this was going on. I think it was the only instrument that was still working but can't remember the reading as I was concentrating on everything else that was going wrong and trying to get it home. I know the system must have experienced a loss of power or the battery had lost enough voltage to trigger all these warning to come on. The battery was definatley down as it normally wouldn't take that long to charge and top off. I love the car but I'm just so frustrated with these electrical problems. I'm afraid to take the car any distance anymore and the wife has lost all faith in it. Just not a reliable vehicle. Anyway, I'm off to the Chevy dealer in Long Beach first thing in the A.M. as its New's day today. God, I'm glad I got the extended GMPP. This could be a long and expensive repair. Its an '08' with 17K. No mod's, all stock except for a skip shift. I'll keep ya all posted on the out come. "Happy New Year".

Desert Nomad,
Torrance Ca.

Originally Posted by Bill Dearborn

I would discount the battery as the problem for now. Too many people jump on the battery when these types of things happen. Check all of the connections to the battery at the battery and at the other end. Frame ground and where the hot lead connects to the starter and alternator. Also check what kind of voltage you get in the +12V (B Plus) locations in the underhood electrical center with the car running and not running.

The problems you had are usually connection related and although cars with modern electronics act up when the voltage gets low cars of the time period before electronics would just die all of a sudden with no warning other than the radio quit just before the engine died.

Bill

Originally Posted by Chevy Cust Svc

Desert Nomad,
I'll monitor this thread. Let us know what caused this and how everything works out at the dealership.

Chevrolet Customer Service,
Justin

Originally Posted by Desert Nomad

The battery is a new AC Delco, 8 months old. Chevy dealer installed earlier this year when I had the same basic problem. I wish it was just a battery, but got a feeling its something beyond that.

Originally Posted by Desert Nomad

"Electrical Nightmare Update"

Checked with the dealer this morning. Initial finding for the electrical fault I had was a bad connector at the BCM. Seems that one of the male pins did not fit snuggly into the female receptacle on the BCM although the plug is fully seated. I was told that GM has a Service Bulletin out pertaining to this particular plug. The ECM had set no codes. But if I understand Tech correctly, the BCM had set about 50 codes. They drove the car about 15 miles with no codes popping up. I'm going back tommorow to hopefully pick the car up. I'm keeping my finger crossed that this was the "Gremlin" in the system. I'll give a final update once I have the car back and road tested.
Thanks again for all the input.
Desert Nomad,

Originally Posted by Desert Nomad

Well, took the 'Z' out for a drive yesterday. Beautiful day, warm and not much traffic. Was on a rural country road mabey 60-70 miles from home and then it started. First indication was the theft deterent system warning along with ABS service warning. So I stopped, restarted the car and the warning's went away. Not more than a mile down the road all hell broke loose. Just about all warning lights came on as follows:

Fuel went to '0'
Oil pressure '0'
Water temp '0'
door unlock warning
Service engine soon warning
Service fuel system
Red infl rest warning on
Turn signal in-op
ABS warning on
Emergency Brake Light on
Exhaust flaps open(noisy)
Radio in-op
Windows would not open or close
Electical system completely unstable.

I believe the car went into a reduce power mode, but not sure. I babied the car the all the way back home approximatley 60-70 miles praying that it wouldn't shut down entirely. Pulled into the driveway and shut the car off. It was dead as a door nail. I couldn't open the door from inside. Luckily the window was open(wouldn't close anyway) and opened the door from outside. The passenger door wouldn't open at all so the wife the wife had to climb out my side. You should of heard all the whinning and complaining. Anyway. to make a long story shorter, put the "Battery Tender" on for about 5 hours and everything was back to normal. Car started perfectly with no warning lights. Now, this was the same basic problem I had earlier this year but dealer said battery was bad, which they changed along with replacing the fob batts. Did a complete download and update the system. Everything seemed to be 'OK' at that time. Seems to me that the battery is supporting the system and not getting charged enough some how properly although I'm not seeing it on the volt meter in the cluster. I can't remember what it was when all this was going on. I think it was the only instrument that was still working but can't remember the reading as I was concentrating on everything else that was going wrong and trying to get it home. I know the system must have experienced a loss of power or the battery had lost enough voltage to trigger all these warning to come on. The battery was definatley down as it normally wouldn't take that long to charge and top off. I love the car but I'm just so frustrated with these electrical problems. I'm afraid to take the car any distance anymore and the wife has lost all faith in it. Just not a reliable vehicle. Anyway, I'm off to the Chevy dealer in Long Beach first thing in the A.M. as its New's day today. God, I'm glad I got the extended GMPP. This could be a long and expensive repair. Its an '08' with 17K. No mod's, all stock except for a skip shift. I'll keep ya all posted on the out come. "Happy New Year".

Desert Nomad,
Torrance Ca.

Originally Posted by southfloridavette

Take a look at the video posted as it may look familiar. To make a long story short (GM and the dealership I worked with throughout the entire situation were great), a 2009 Z06 that I purchased brand new had these problems starting at approximately 7400 miles. The problem was generally triggered when going over small bumps such as lane reflectors or uneven roads. It took several months and about 4000 miles to find the problem. This was trial and error. Most of the time, it took a couple of hundred miles for the problem to resurface. The last visit, the car was in the shop for about 2 and a half months at which point GM bought back the Z06 and put me into a car of my choice. By this time, I believe the problem had been fixed and traced back to a pin connector in the BCM. So you may be in luck. If your problem has not been resolved, let me know to see if I can be of help. That bulletin may have been my car.


In the video at around 9:50, I run over some lane reflectors and the faulty connection seemed to reconnect. And just like yours, most of the BCM codes were triggered.

http://www.youtube.com/watch?v=JOdJN...afAUAAAAAAAAAA

Originally Posted by Bwilliams58

For the last couple of months and a total of maybe 10 times.....I have been heading down he road and the next thing I know the engine has shut down. The first time I coasted to side of the road and restarted...now I just shift to neutral and restart. I have a 2005 coupe! It has also lately indicated hot nine and shuts the air cond off. My local mechanic says he thinks the cluster is bad. Anybody eerience this and comments on the cluster opinion? Car runs great otherwise but the shutting down with no warning can be a safety concern! Any feedback is appreciated!!