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LMC5 or not?

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Old Nov 30, 2020 | 10:01 AM
  #21  
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My advise, install the kit.
My first Vette was a 2000 FRC with 130k on it. It always worked perfectly. Until it didn't one evening in 2015. Column locked, stuck, unable to move the car. Luckily it happened as I was backing out of my driveway!!
good luck!
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Old Nov 30, 2020 | 11:08 AM
  #22  
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Originally Posted by oharal
my 2002 worked fine until it didn't in 2015. Left me stuck at my apartment complex's mailbox. At a minimum, it's worth having on hand for when it does fail. But it will fail at the gas station after you fill up and you'll be asking to borrow a paperclip from a crackhead so you can release the BCM pins and laying over the passenger door sill with your legs out in the road where some idiot in a lifted brodozer he financed at 14% will run over your feet.

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Old Nov 30, 2020 | 11:56 AM
  #23  
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I just picked up a 2004 Z06 with 21k orig. miles on ebay.
When it arrived, I was surprised to discover a CLB was never performed on it.
It is a one-owner senior-citizen car.
I installed the LMC5 2 days ago to avoid getting stranded somewhere, even though the car is 16 years old,
and I'm guessing it never happened to the original owner.
Besides changing all the fluids, this is one of the first things I did.
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Old Dec 1, 2020 | 11:46 AM
  #24  
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Originally Posted by Lazarus Long
The recall only disables the lock on C5s with an automatic transmission.
Not true. That version (C) of the recall removed the lock plates on all USA vehicles. My MN6 does not have a steering lock as a result.
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Old Dec 1, 2020 | 12:10 PM
  #25  
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Also keep in mind that GM added a 2mph fuel cut off with the column lock recall. This is the one that can get you even if your steering wheel does not lock with the key out. What happens is the system can still sense an issue with the column lock. When that happens the 2mph fuel cut off kicks in and your car shuts off when you start to move. For $50, just buy the LMC5 AND install it and do the "brown wire mod".
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Old Dec 1, 2020 | 01:53 PM
  #26  
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Originally Posted by v6turbo87
Also keep in mind that GM added a 2mph fuel cut off with the column lock recall. This is the one that can get you even if your steering wheel does not lock with the key out. What happens is the system can still sense an issue with the column lock. When that happens the 2mph fuel cut off kicks in and your car shuts off when you start to move. For $50, just buy the LMC5 AND install it and do the "brown wire mod".
The "C" version of the recall fixed all the issues.

There always was a fuel cut off triggered by attempting to drive with the column still registering as locked. The recall in question disabled that function - an extra harness was included for the purpose. And the described fix procedure is lengthy and requires a Tech II, and depending on year, a PCM re-program.

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Old Dec 1, 2020 | 03:12 PM
  #27  
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Originally Posted by jackthelad
The "C" version of the recall fixed all the issues.

There always was a fuel cut off triggered by attempting to drive with the column still registering as locked. The recall in question disabled that function - an extra harness was included for the purpose. And the described fix procedure is lengthy and requires a Tech II, and depending on year, a PCM re-program.
Good info and I thank you Jack...
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Old Dec 1, 2020 | 07:34 PM
  #28  
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Originally Posted by jackthelad
Not true. That version (C) of the recall removed the lock plates on all USA vehicles. My MN6 does not have a steering lock as a result.
Ah, I found a different bulletin that says that it does remove the lock plate for MN6 cars. The first one I found said the lock would still be enabled for manual cars.

Another issue is I don't think there is any way to tell which version was done. I tried asking at my dealer, they just know that the recall was performed, but not which version.
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Old Dec 2, 2020 | 09:24 AM
  #29  
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Whether it has the lock plate removed or not, a low battery can cause the 2 mph fuel cut off to happen. Had that happen to me one spring, even with CLB intalled. Fortunately I had EFILive and changed it to 256 mph and drove to the event.

Last edited by Gordy M; Dec 2, 2020 at 09:25 AM.
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Old Dec 2, 2020 | 11:07 AM
  #30  
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Originally Posted by Lazarus Long
Another issue is I don't think there is any way to tell which version was done. I tried asking at my dealer, they just know that the recall was performed, but not which version.
Yes, I had the earlier recall done, and had the same reaction when I contacted the dealer again. It was not until I produced a copy of the "C" recall that they went back to GM who than agreed that since I had the earlier recall done, and it had failed, that they would fix it on their nickel. This was in 2010, for an early '98 car, so in my mind they did the right thing by me.

By the way, I got it unlocked to drive to the dealer was by artificially increasing the voltage in the system - I hooked up the charger, switched it to boost and the column unlocked immediately on starting. Just not enough "kick" at 12 volts to force the unlock.

p.s. If anyone wants a copy of that recall, just google "Product Safety Bulletin #0406C"

Last edited by jackthelad; Dec 2, 2020 at 11:34 AM.
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Old Feb 15, 2021 | 04:54 PM
  #31  
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Installed the LMC5 module last weekend and watched several Youtube install videos and read through the instructions twice. Should be a piece of cake but with me it's always the most simple things that cause me the biggest problems. The supplied pin removal tool is a small allen key and wound up bending and breaking when it would not dislodge the pin from the plug. Had another one same size in my tool box and it met the same fate. I needed something beefier and longer to apply more pressure and get a better grip on so I made my own tool out of a larger allen key. To get the key to fit into the plug to release the pin I ground down the end with my bench grinder. It worked like a charm and now this is a new tool in my tool box.


Last edited by minuteman048; Feb 16, 2021 at 06:35 AM.
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Old Feb 15, 2021 | 09:04 PM
  #32  
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Originally Posted by minuteman048
Installed the LMC5 module last weekend and watched several Youtube install videos and read through the instructions twice. Should be a piece of cake but with me it's always the most simple things that cause me the biggest problems. The supplied pin removal tool is a small allen key and wound up bending and breaking when it would not dislodge the pin from the plug. Had another one same size in my tool box and it met the same fate. I needed something beefier and longer to apply more pressure and get a better grip on so I made my own tool out of a larger allen key. To get the key to fit into the plug to release the pin I ground down the end with my bench grinder. It worked like a charm and now this is a new tool in my tool box.

Agree that things aren't as easy as they seem sometimes. Read where the wire sometimes had to be pushed in and seated before you inserted the tool. Glad you got it.
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Old Feb 15, 2021 | 10:55 PM
  #33  
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Glad you found a way. I had a similar issue. The wire would not released when I did mine years ago. Called Richard at Compliance asking if I was doing it correctly and he said just push the allen key in and pull the wire as hard as you can. Very hesitant to use force since every time I did previously on anything I regretted it. Pulled really hard and It did finally released. .
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Old Feb 15, 2021 | 11:10 PM
  #34  
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bc6152: I installed the LMC5 on my C5 '97 and have not had anymore problems
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Old Feb 15, 2022 | 11:35 AM
  #35  
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Do you need lmc5 on a 2002 automatic transmission?
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Old Feb 15, 2022 | 11:48 AM
  #36  
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Originally Posted by Yvetteo2
Do you need lmc5 on a 2002 automatic transmission?
Not on an automatic, no.
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Old Feb 15, 2022 | 01:53 PM
  #37  
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Picture this... You are parked at a Roadside rest.. perhaps eye 80 in the Rockies, 20deg outside, Cold, then it happens... Failed GM designed gizmo locks steering wheel..... Now imagine what situation you're in..... Fix it now!
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Old Feb 15, 2022 | 02:03 PM
  #38  
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Originally Posted by c5arlen
Picture this... You are parked at a Roadside rest.. perhaps eye 80 in the Rockies, 20deg outside, Cold, then it happens... Failed GM designed gizmo locks steering wheel..... Now imagine what situation you're in..... Fix it now!
This is an old thread. However, there was a new question asked today specifically asking if you need an LMC5 on an '02 automatic. By 2002, only the manual cars were affected by the column lock issue. If he had a manual (A6) I would agree with you, but he doesn't.
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Old Feb 15, 2022 | 02:09 PM
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I don't understand why you are so questioning and hesitant about this. It's the best $40 you'll ever spend on your car and a great insurance policy not have to ever worry about this again.
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Old Feb 15, 2022 | 02:16 PM
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Originally Posted by mrlmd
I don't understand why you are so questioning and hesitant about this. It's the best $40 you'll ever spend on your car and a great insurance policy not have to ever worry about this again.
Because the column lock is NOT an issue AT ALL on the '02 automatic! If he had a manual transmission, that would be a totally different story.
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