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Column Lock Issue

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Old Mar 26, 2025 | 08:24 AM
  #1  
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Default Column Lock Issue

Hey guys.

Needed to replace the ignition switch in the car due to it starting to get faulty. (dead cluster, no interior electronics, very "crunchy" turning of the key) Got the new one directly from the dealer and swapped it in.

After install the car has power, but no crank. Along with the "service column lock" message on the dash.

Out of curiousity while it was all apart, i reinstalled the original ignition switch, and while it still has the service lock message on the screen, the car cranks and fires no problem.

Is there some sort of coding/programming required when replacing the switch? Or would the lmc5 module completely by pass this issue?
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Old Mar 26, 2025 | 10:23 AM
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what year car? Auto I assume?
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Old Mar 26, 2025 | 11:10 AM
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Originally Posted by Missileboy
what year car? Auto I assume?
yessir, 98 auto
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Old Mar 26, 2025 | 01:22 PM
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There have been reports of people trying 2-3 new switches before finding one that works.
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Old Mar 26, 2025 | 01:45 PM
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Originally Posted by Dads2kconvertible
There have been reports of people trying 2-3 new switches before finding one that works.
Well that sounds like a bad time lol
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Old Mar 26, 2025 | 03:34 PM
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It took 4 switches before one that worked 4 months ago. Now this one is acting up. All had GM badging, probably made in China.
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Old Mar 26, 2025 | 03:41 PM
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Originally Posted by rrwirsi
It took 4 switches before one that worked 4 months ago. Now this one is acting up. All had GM badging, probably made in China.
Do you have the Lmc5 module on the car?
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Old Mar 26, 2025 | 04:16 PM
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Yes, it was installed 1 month after purchase. The switch in the car at purchased lasted for 10 years of ownership then failures.
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Old Mar 28, 2025 | 01:09 PM
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Originally Posted by rrwirsi
Yes, it was installed 1 month after purchase. The switch in the car at purchased lasted for 10 years of ownership then failures.
So the LMC5 doesnt over ride whatever issue is new switch is causing?
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Old Mar 28, 2025 | 01:21 PM
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There are two tutorials on the forum relative to the ignition switches, one for cleaning and polishing the contacts in the original switch, and another about aligning and polishing the contacts in the new chinesium switches. It seems to me that I have found both in the tech section, in the stickies portion at the heading.
Found one: https://www.corvetteforum.com/forums...ch-repair.html
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Old Mar 28, 2025 | 01:32 PM
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Originally Posted by redzg
There are two tutorials on the forum relative to the ignition switches, one for cleaning and polishing the contacts in the original switch, and another about aligning and polishing the contacts in the new chinesium switches. It seems to me that I have found both in the tech section, in the stickies portion at the heading.
Found one: https://www.corvetteforum.com/forums...ch-repair.html
that is extremely helpful, i will give that ago
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Old Mar 28, 2025 | 01:49 PM
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The AC Delco OEM switch is made in China. Paid high dollar for such a cheap switch that didn't work. I ended up installing a $30 switch from Amazon that worked.
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Old Mar 30, 2025 | 11:34 PM
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Moved to C5 Tech.
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Old Mar 31, 2025 | 08:50 AM
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Originally Posted by Bicklebok
The AC Delco OEM switch is made in China. Paid high dollar for such a cheap switch that didn't work. I ended up installing a $30 switch from Amazon that worked.
got one on the way !
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Old Apr 4, 2025 | 10:11 AM
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$40 amazon switch fixed it. unreal.
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Old Apr 4, 2025 | 11:04 AM
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Originally Posted by micbegls1
$40 amazon switch fixed it. unreal.
Do you have the link for the amazon switch?
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Old Apr 4, 2025 | 12:38 PM
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Originally Posted by micbegls1
$40 amazon switch fixed it. unreal.
Always awesome when a final solution is updated! Thanks!
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