Shutting down problem 2005 - M6
Thread Starter
Heel & Toe
Joined: Aug 2005
Posts: 17
Likes: 0
From: campbell ca
Shutting down problem 2005 - M6
I have experiencing an unusal problem for the last few months. Maybe 1 or 2 times out of 20, when I shut my car off properly 2005 M6 (in reverse, steering locked and parking brake on) I get out of the car, shut the door and start to walk away, the car sends out a 3 quick beeps on the horn as if I have left the keys in the car. Of course keys are not in the car. As I re-enter the car I hear the fast chime inside the car as if something is left on. There is no message on the DIY. I get in turn the car on and off and shift back into reverse and see no messages. It can happen several times in a row before it corrects itself. It seems to happen the most in my garage, however, it has happen in parking lots. My other set of keys are 50 ft away.
Any Thoughts?
Any Thoughts?
Le Mans Master
Joined: Jan 2005
Posts: 5,611
Likes: 5
From: Thousand Oaks California
I get the same thing, sometimes. Seems to be random.
The car is not shutting down. I think what is happening (have not proved it yet) is that when I shift into reverse, I "sometimes" do not go all the way forward with the shift lever into reverse and the reverse sensor switch in the tranny does not close and send the "reverse input signal" to the BCM. Therefore, I get the 3 horn beeps, just as if the trans was not in reverse.
Physically the trans is in reverse, but electronically, it is not.
And then there are those times when I swear I put it in reverse, but it is really in 5th.
The car is not shutting down. I think what is happening (have not proved it yet) is that when I shift into reverse, I "sometimes" do not go all the way forward with the shift lever into reverse and the reverse sensor switch in the tranny does not close and send the "reverse input signal" to the BCM. Therefore, I get the 3 horn beeps, just as if the trans was not in reverse.
Physically the trans is in reverse, but electronically, it is not.
And then there are those times when I swear I put it in reverse, but it is really in 5th.
Last edited by calemasters; Sep 1, 2006 at 01:31 PM.
Safety Car
Joined: Dec 2004
Posts: 3,565
Likes: 5
From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
Originally Posted by calemasters
I get the same thing, sometimes. Seems to be random.
The car is not shutting down. I think what is happening (have not proved it yet) is that when I shift into reverse, I "sometimes" do not go all the way forward with the shift lever into reverse and the reverse sensor switch in the tranny does not close and send the "reverse input signal" to the BCM. Therefore, I get the 3 horn beeps, just as if the trans was not in reverse.
Physically the trans is in reverse, but electronically, it is not.
And then there are those times when I swear I put it in reverse, but it is really in 5th.
The car is not shutting down. I think what is happening (have not proved it yet) is that when I shift into reverse, I "sometimes" do not go all the way forward with the shift lever into reverse and the reverse sensor switch in the tranny does not close and send the "reverse input signal" to the BCM. Therefore, I get the 3 horn beeps, just as if the trans was not in reverse.
Physically the trans is in reverse, but electronically, it is not.
And then there are those times when I swear I put it in reverse, but it is really in 5th.
that's why i always back up just a tad when i shut her down.
Team Owner
Joined: Feb 2000
Posts: 53,529
Likes: 77
From: Arizona
Originally Posted by Zig
that's why i always back up just a tad when i shut her down.
But this should all be cured soon with the next BCM upgrade due soon!
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Safety Car
Joined: Dec 2004
Posts: 3,565
Likes: 5
From: stafford country, va. Avatar: Me on turn 3 @ Bristol (The World's Fastest Half-Mile)
Originally Posted by Hoonose
You'd think that would help, but GM has specifically advised against this! It seems to be related to moving the car too soon after reverse is selected, interfering with complete shut down.
But this should all be cured soon with the next BCM upgrade due soon!
But this should all be cured soon with the next BCM upgrade due soon!
i had no idea they are recommending not to back up right before shut down
hopefully the reprogram will work ....aarrrrrr. what happened to the battery saver feature that is supposed to be in the car ?? did they find that it somehow wasn't active and needs to be turned on via a reprogram ?
Drifting
Joined: Jan 2005
Posts: 1,454
Likes: 4
From: San Antonio Texas
Originally Posted by Hoonose
You'd think that would help, but GM has specifically advised against this! It seems to be related to moving the car too soon after reverse is selected, interfering with complete shut down.
But this should all be cured soon with the next BCM upgrade due soon!
But this should all be cured soon with the next BCM upgrade due soon!
BCM upgrade? Is this a warranty issue?
Team Owner
Joined: Feb 2000
Posts: 53,529
Likes: 77
From: Arizona
Originally Posted by Zig
what happened to the battery saver feature that is supposed to be in the car ?? did they find that it somehow wasn't active and needs to be turned on via a reprogram ?
Team Owner
Joined: Feb 2000
Posts: 53,529
Likes: 77
From: Arizona
Originally Posted by SA HEAT
BCM upgrade? Is this a warranty issue?
Drifting
Joined: Jan 2005
Posts: 1,454
Likes: 4
From: San Antonio Texas
Originally Posted by Hoonose
There is good scuttlebutt that a cure is at hand. Whether it's a software upgrade or a new BCM version I don't know. Hopefully we all will soon know the answers, and I'm sure it's a warranty thing. It sounds like it will cure DBS. It also may eliminate the shift to reverse requirement, and possibly the SCL. Hoonose?
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From: Cape Cod, Mass.
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My recollection of GM Bruce's info was that if you exceeded 1.8 miles per hour when backing before shutdown it could cause a problem in the shutdown. Just moving it enough to rock it should be fine, especially if it's working for you.
I have had my BCM and Steering column lock module replaced as well as my ECM re-flashed. These are the combination of "fixes" that are out there. The latest is the re-flash.
I am having so many other issues I am actively seeking a buy out and an 07 coupe or Z06. GM customer assistance is working on my case.
I have had my BCM and Steering column lock module replaced as well as my ECM re-flashed. These are the combination of "fixes" that are out there. The latest is the re-flash.
I am having so many other issues I am actively seeking a buy out and an 07 coupe or Z06. GM customer assistance is working on my case.
Team Owner
Joined: Feb 2000
Posts: 53,529
Likes: 77
From: Arizona
Originally Posted by SA HEAT
Thanks.....It hasn't happened to me (yet...knocking on wood), but it would be nice to get a cure for the problem if it's identified. I wouldn't argue with the shift to reverse fix either even though it has never bothered me. What's "SCL"?
Race Director
Joined: Oct 2004
Posts: 10,089
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Originally Posted by capevettes
My recollection of GM Bruce's info was that if you exceeded 1.8 miles per hour when backing before shutdown it could cause a problem in the shutdown. Just moving it enough to rock it should be fine, especially if it's working for you.
Team Owner
Joined: Oct 2004
Posts: 27,420
Likes: 64
From: San Clemente CA
Originally Posted by Hoonose
You'd think that would help, but GM has specifically advised against this! It seems to be related to moving the car too soon after reverse is selected, interfering with complete shut down.
But this should all be cured soon with the next BCM upgrade due soon!
But this should all be cured soon with the next BCM upgrade due soon!
Team Owner
Joined: Jun 2001
Posts: 26,714
Likes: 344
From: Houston, TX
Originally Posted by shopdog
So, let me get this straight, GM is saying that if you briskly back into a parking space, the car won't shut down properly? If that's true, that's a serious design fault.
I was going to say the same thing. Many times I've backed into a parking space and shut it down. Are ya'll saying I'm supposed to go out of my way to put it in a forward gear, then back to reverse again???