Got my Nelson tune..Do I need a crank relearn??
12-26-2005, 07:51 PM
#1
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Got my Nelson tune..Do I need a crank relearn??
Ok so I got my nelson tune in...So Do I need the crank relearn? I have heard people talk about it but don't really understand it.. Is this something you have to get done @ the dealer? (how much does it cost) and what exactly does it do? Thanks for any info! 
And happy new years, Bigwake03.
And happy new years, Bigwake03.
12-26-2005, 09:27 PM
#2
More than likely you need one done, unless you sent him your original PCM that is.
I have driven around with the SES light from the crank re-learn not being done for a couple of months total after various Nelson tuned PCMs. It won't hurt anything from my experience.
The SES light kind of bugs you but after a couple of weeks you get used to it and don't give a crap anymore. Just don't go out and have it done if your planning on multiple tunes in the coming months. Its a complete waste of money IMO.
Get it done when your happy with the tune and don't plan any mods that warrant a new tune.
I had a local garage guy quote me $50.00 to do it. Seemed like kind of a rip for a 5 minute procedure. I got to know some really cool people in the service department at my local Chevy dealer that do it for free after hours.
They are the best!!
I have driven around with the SES light from the crank re-learn not being done for a couple of months total after various Nelson tuned PCMs. It won't hurt anything from my experience.
The SES light kind of bugs you but after a couple of weeks you get used to it and don't give a crap anymore. Just don't go out and have it done if your planning on multiple tunes in the coming months. Its a complete waste of money IMO.
Get it done when your happy with the tune and don't plan any mods that warrant a new tune.
I had a local garage guy quote me $50.00 to do it. Seemed like kind of a rip for a 5 minute procedure. I got to know some really cool people in the service department at my local Chevy dealer that do it for free after hours.
They are the best!!
12-26-2005, 10:39 PM
#3
From my understanding, it is what tells the pcm where in the cycle the crank is. Is it necessary? I would think so. Yes it will run ok without doing it, but I think the pcm should know something like that. Some tunes will come out close enough that it won't throw the code, and trip the light, but in my truck, I would want the pcm to know exactly were the crank is.
Last edited by kbracing96; 12-26-2005 at 10:45 PM.
12-27-2005, 12:11 AM
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ive put in 4 different nelson computers in (2 ssr's 1 5.3 cc and 1 2500hd ) and the only one that poped that code was the 5.3 nelson said to just drive it at like 55-60mph for a while and it should learn it ran good other than that
12-27-2005, 12:43 PM
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I switched from a 99 to 02 PCM and never got the light on many swaps. Most of the ones getting the lights are 03+, some, but not many of Nelson tunes from earlier trucks are getting these lights. Hardly any at all are getting a security relearn either.
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