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Wierd starting problem

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Old Jun 23, 2006 | 06:19 PM
  #1  
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Burning Brakes
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From: Troy MI
Default Wierd starting problem

I have done a bunch of searches and can't find a situation quite like I am experiencing.

It started out with having a couple second delay between the key being turned and the starter kicking in.

Today everytime I have gone to start the car after parking it, it won't start.

What's really strange is the rear hatch won't pop either. Doesn't matter if I use the key fob, or the dash switch...

I know the battery is good, when it cranks is start right up. I can hear the fuel pump kick on, but no click from the passenger side, or turn of the starter.

If I disconnect the ground from the battery, reconnect it, the car starts right up, and the hatch will open.

I haven't tried the second key yet, but I am having doubts that it will fix it.

Added: I don't think it is the clutch switch, but I guess I'm not 100% sure....

Any ideas why it won't start, but if I disconnect and reconnect the ground it works fine?
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Old Jun 24, 2006 | 12:25 AM
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Dave68
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From: San Diego CA
Default

You might want to check starter ground or other loose connections to the starter. Try wiggling the battery ground cable around to see if it is its grounding connection.

Good luck.

Dave
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Old Jun 25, 2006 | 11:22 AM
  #3  
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msuc5vette
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Burning Brakes
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From: Troy MI
Default

Originally Posted by Dave68
You might want to check starter ground or other loose connections to the starter. Try wiggling the battery ground cable around to see if it is its grounding connection.

Good luck.

Dave
Thanks for the reply, I will check it, but I suspect it is fine. The behavior is not speratic. It always starts after I disconnect the battery, and never starts if I don't...

I tried the second key, no dice. I will look into codes as well.

The one thing I did different was I washed the car while I had the back end up on ramps. Maybe water got in a bad spot.

Can anyone elaborate on what is disabled if the securtity system doesn't read the key resistor?
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Old Jul 9, 2006 | 05:06 PM
  #4  
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msuc5vette
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Burning Brakes
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From: Troy MI
Default

OK...
I just got back from vacation and decided to dig back into this problem.

After doing some searches, I found a post about the BCM getting wet and causing wierd problems. I checked the passenger footwell, felt and looked dry. Pulled the BCM, also looked and felt dry. I ran a hair dryer on it for a few minutes just in case.

Plugged it back in, started fine. Shut if off, waited 15 minutes, same problem rear hatch won't pop, and car won't start.

I pulled all the codes and got the following.

BCM NO COMM.
SDM U1000 H C Loss of Communication Undetermined -RFA
U1064 H C Loss of Communications with DCM
IPC U1176 H C Loss of Communications with RFA
U1160 H C Loss of Communications with LDCM
RADIO U1096 H Loss of Communications with IPC (No State of Health Message)
HVAC NO COMM.
LDCM U1064 H Loss of Communications with DCM
RDCM U1064 H Loss of Communications with DCM

Anyone have any ideas?
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