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BCM Replacement
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billy101
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PostPosted: Tue Aug 16, 2011 8:16 pm    Post subject:  BCM Replacement Reply with quote

Hi guys! Seems like my BCM is either on it's way out, or is already bad.

I can clear the BCM codes as much as I want, but these 4 come back instantly.

B2665 - Park Lamp Switch Circuit HIgh
B3127- Driver Door Unlock Output Short Ground
B3132- All Door Unlock Circuit Low
B3137- All Door Lock Circuit Low

I've already swapped out the Park Lamp switch with a known working one to no avail. Is this a bad BCM?
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billy101
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PostPosted: Sat Aug 20, 2011 2:07 am    Post subject:   Reply with quote

Anyone have an idea? I'm 90% sure the BCM will cure my problems....
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Albert2kls
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PostPosted: Sat Aug 20, 2011 8:43 am    Post subject:   Reply with quote

I am not sure if the BCM is the problem but how much is it? It just might be worth it anyway for peace of mind. That's a lot of systems going haywire at the same time, it could also be a ground issue. Try to see if there is a common ground for all the symptoms. I hope that helps.

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billy101
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PostPosted: Sat Aug 20, 2011 10:26 am    Post subject:   Reply with quote

Albert2kls wrote:
I am not sure if the BCM is the problem but how much is it? It just might be worth it anyway for peace of mind. That's a lot of systems going haywire at the same time, it could also be a ground issue. Try to see if there is a common ground for all the symptoms. I hope that helps.


It's about $140 for the actual BCM and then I'm not sure how much the dealership would charge to program it.
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IffyG
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PostPosted: Sat Aug 20, 2011 11:05 am    Post subject:   Reply with quote

billy101 wrote:
I'm not sure how much the dealership would charge to program it.


It was charged 2 hours for the install and reprogramming by the dealer. Since it's a cakewalk to install, I'd expect 2 hours to program it.

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whitelightnin04MC
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PostPosted: Sat Aug 20, 2011 12:29 pm    Post subject:   Reply with quote

My BCM replacement cost me $400 including the cost of the BCM.

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Albert2kls
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PostPosted: Sat Aug 20, 2011 1:09 pm    Post subject:   Reply with quote

WOW Shocked ... Thats expensive to program, let me guess you also have to program it to the car right? is there another way to do it, mabe a little cheaper? Can any shop do it or just the dealer?

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billy101
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PostPosted: Sat Aug 20, 2011 2:31 pm    Post subject:   Reply with quote

Jeeez! If I provide the BCM and install it myself at the dealership, will they just program it? I'm going to have to talk to my dad and see if he knows anyone over at the Chevy dealership to see if they can get their hands on a tech 2 for a little while.
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whitelightnin04MC
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PostPosted: Sat Aug 20, 2011 2:42 pm    Post subject:   Reply with quote

billy101 wrote:
Jeeez! If I provide the BCM and install it myself at the dealership, will they just program it? I'm going to have to talk to my dad and see if he knows anyone over at the Chevy dealership to see if they can get their hands on a tech 2 for a little while.


You can't install it yourself because then the car doesn't run with a bcm that isn't programmed. Most dealers won't let you work in the bay and most dealers won't work on a car out in their parking lot.

Albert2kls wrote:
WOW Shocked ... Thats expensive to program, let me guess you also have to program it to the car right? is there another way to do it, mabe a little cheaper? Can any shop do it or just the dealer?


Any place with a tech2 can do it. I had my mechanic at a shell station program mine. It took a couple hours. All of the options on the car have to be programmed into the bcm.

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Albert2kls
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PostPosted: Sat Aug 20, 2011 3:13 pm    Post subject:   Reply with quote

Quote:
Any place with a tech2 can do it. I had my mechanic at a shell station program mine. It took a couple hours. All of the options on the car have to be programmed into the bcm.


Ok, thats better, just have to have someone with the right scanner or a cheaper labor rate. Still sucks to pay for the labor that the computer is doing, but I know you are paying for the knowlege of the mechanic as well as the equipment that he spent (sometimes thousands) money on....
Good luck Billy

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billy101
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PostPosted: Sat Aug 20, 2011 3:56 pm    Post subject:   Reply with quote

Albert2kls wrote:
Quote:
Any place with a tech2 can do it. I had my mechanic at a shell station program mine. It took a couple hours. All of the options on the car have to be programmed into the bcm.


Ok, thats better, just have to have someone with the right scanner or a cheaper labor rate. Still sucks to pay for the labor that the computer is doing, but I know you are paying for the knowlege of the mechanic as well as the equipment that he spent (sometimes thousands) money on....
Good luck Billy


True. Cool, I'll call around a couple shops to see if any of them would have access to a Tech II. It sounds a lot harder than just putting in the VIN and the Tech II knowing all the RPO's for the vehicle and doing it automatically right?
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billy101
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PostPosted: Mon Sep 12, 2011 6:31 am    Post subject:   Reply with quote

I'm going to give my local dealership a call and see how much they would charge for programming of the BCM Only. I'll remove the old and install the new BCM at the shop, if they'll allow me. The Service Vehicle Soon light is annoying as hell, and the issue that the BCM is having with not letting me control my headlights is annoying as hell too.

Does anyone know the procedure to program a BCM and how long it should take to GM spec? I'm going to talk to my dad and see if he can talk to someone with access to a tech II and pay him on the side to program it for us.

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IffyG
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PostPosted: Mon Sep 12, 2011 10:31 am    Post subject:   Reply with quote

billy101 wrote:

Does anyone know the procedure to program a BCM and how long it should take to GM spec? I'm going to talk to my dad and see if he can talk to someone with access to a tech II and pay him on the side to program it for us.


I was billed 2 hours for labor and programming. The vast majority of that is the programming since the BCM is pretty simple to get at.

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billy101
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PostPosted: Mon Sep 12, 2011 11:24 am    Post subject:   Reply with quote

IffyG wrote:
billy101 wrote:

Does anyone know the procedure to program a BCM and how long it should take to GM spec? I'm going to talk to my dad and see if he can talk to someone with access to a tech II and pay him on the side to program it for us.


I was billed 2 hours for labor and programming. The vast majority of that is the programming since the BCM is pretty simple to get at.


Hm, alright. Do you mind sharing what your bill was out the door? Did you get your BCM from the dealership as well? I know it can be had cheaper getting it through another source.

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2002 Impala LS 3.8 -121,749 miles 11/13/2011
2001 Impala LS 3.8 - 118,510 miles. 9/2/2011. RIP - 11/12/2011
2010 Malibu LTZ 3.6 - 16,014miles. 8/20/2011.
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IffyG
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PostPosted: Mon Sep 12, 2011 11:37 am    Post subject:   Reply with quote

I was stuck with a car that wouldn't entirely turn off without unplugging the battery every time I moved it. I paid the dealer for the BCM and the labor. It ended up being 500 some odd well spent dollars.

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