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Old 02-14-2014, 10:32 AM
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1998 - BCM going bad. Can I swap it?

My wife's 1998 (says Z48 on the title??) Grand Cherokee has been having weird electric problems for a couple of years. The power windows would quit sometimes, the lights on the dash have become dim and the brights will sometimes flash, along with the interior lights coming on and the dash going to full brightness, for no reason at all while driving along. I finally gave up and trying to figure out the problem and took it in - the garage said the BCM was going bad. They then told me that unfortunately, they couldn't locate any new ones (they aren't made any more) and that they didn't think you could just swap one out, because they are one-time programed. I thought I would ask for a second opinion, and see if any one has been in the same predicament. Does anyone know if we can get one from a similar model and swap it out?

Thanks
Eric
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Old 02-15-2014, 03:38 PM
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Originally Posted by ribby24 View Post
My wife's 1998 (says Z48 on the title??) Grand Cherokee has been having weird electric problems for a couple of years. The power windows would quit sometimes, the lights on the dash have become dim and the brights will sometimes flash, along with the interior lights coming on and the dash going to full brightness, for no reason at all while driving along. I finally gave up and trying to figure out the problem and took it in - the garage said the BCM was going bad. They then told me that unfortunately, they couldn't locate any new ones (they aren't made any more) and that they didn't think you could just swap one out, because they are one-time programed. I thought I would ask for a second opinion, and see if any one has been in the same predicament. Does anyone know if we can get one from a similar model and swap it out?

Thanks
Eric
Yeah probably not a good idea to just plug in a used one, they can reprogram stuff you might not want programmed. A new one will read your current settings and use those. Dealers usually don't have them, but a guy who is kind of famous in the Jeep community probably has them, he goes by Kolak, and can be reached at Kolak@aol.com
Heck, he might even already be on this forum
Or I'm sure you can find one on the internet somewhere

Oh and some of those problems could be related to loose door wiring or a shoddy headlight switch if not the bcm.
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Old 02-17-2014, 10:54 AM
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Re: 1998 - BCM going bad. Can I swap it?

Thanks for the reply and information. I've sent an email off to him to see if he can help.

Thanks again!
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Old 03-13-2014, 09:53 PM
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Re: 1998 - BCM going bad. Can I swap it?

if pushing on (& holding) the headlight switch keeps the lights from flickering, you can fix the switch if you want -worked in ours

Repairing headlight switch that causes dimming issues *picture heavy* - JeepForum.com
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Old 03-14-2014, 05:56 AM
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Originally Posted by 4.whoa View Post
if pushing on (& holding) the headlight switch keeps the lights from flickering, you can fix the switch if you want -worked in ours

Repairing headlight switch that causes dimming issues *picture heavy* - JeepForum.com
I also followed those exact instructions when I resoldered mine, worked great.
Similar concept works to fix bad VICs or GDMs.
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