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Mine is a 1999 C5 convertible and when I got it in 2010, I would often get the "Pull key, wait 10 seconds" message. Documentation I had showed the original owner had had the GM recall for the column lock issue done so it wouldn't lock up, just gave the message. In 2013, I got an LMC5 bypass module and installed it and it has mostly worked. Instead of getting the message every three or four times I started the car, I only get it occasionally, perhaps every thirty or forty times. It was livable - I've known about the brown wire mod fix for several years but hadn't tried it until today. Surprise! No brown wire on mine! It looks as though mine is from before they worked out the brown wire solution. I guess I'm going to have to live with it . . . or spring for a newer LMC5 module. Ah, well, I tried.
Not my pic, but it could be . . .
Last edited by K9Leader; Jun 12, 2021 at 12:29 PM.
The brown wire mod is something you should only do if you have to (I spoke to Richard about this). This is a case of less is more, don't do it unless you have to. I installed the LMC5 within a few months of buying my 2001 manual in 2017 after getting the "pull key wait 10 seconds" message from day one. I suspect that the past owner (or owners) must have simply lived with the defect (message) for 16 years. No doubt the dealership I bought the car from thought they were unloading a lemon. Four years and 19,000 miles later...I'm a very happy owner.
Even after the LMC5 installation, I get the message periodically. By periodically, I mean maybe once or twice a year at most. I can live with that. In my case I got it after putting the car on the battery tender over the winter a year ago, and then last week I got the message upon start up after scraping a speed bump. It's a bit of a gremlin but a much more tolerable one post the LMC5 installation. Before that I got that message constantly.
I had the same issue with my original lmc5, called compliance parts and they literally sent me out a new one. Great company, they are my only recommendation for column lock issues because of it.
No Brown Wire Mod For Me!
