2k silverado, change to COS, questions.

[acomp917]

ScarabEpic22,

I'm not sure what you mean. Both .tun files match in the fans area. The heading is "no fans" that negates all of those settings. The trucks use belt driven fan.

On that flash advice... You have to flash the COS over any compatible controller, then flash the compatible calibration "into" the COS.

Careful about what you tell noobs, they(I) should learn correctly.

S

[ScarabEpic22]

ScarabEpic22,

I'm not sure what you mean. Both .tun files match in the fans area. The heading is "no fans" that negates all of those settings. The trucks use belt driven fan.

Hmm, Ive never seen a file setup that way even though both of my trucks use mechanical fans. Do you mean they are full-time belt driven, as in the PCM has absolutely no control over them (even with the A/C compressor)?

On that flash advice... You have to flash the COS over any compatible controller, then flash the compatible calibration "into" the COS.

Careful about what you tell noobs, they(I) should learn correctly.

S

?? You have to first load the base 2002 OS that you want to upgrade to a COS. Then full flash the COS in. I assumed you knew to do cal flash afterwards to get the COS setup just like if you were upgrading to another regular OS, sorry I didnt clarify first.

[joecar]

In your read-back 02020005 file, look at the Custom parameters/tables, check for any parameters/tables being out-of-range (i.e. blue dog-ear corners in any table cell);

Did you fix any OOR tables...? If not, this may or may not be the problem (probably not the problem).

[acomp917]

joecar,

Are you posting to me(acomp917)?

I will look for any OOR settings. I'm currently running the 12212156 2002 factory OS/tune. I had a problem with the "blinking battery". I just fixed it by setting it to "not reported" in p1638. I don't know if there are other problems because of that. Am going to post the repair right now.

Oh, I checked all of the tables between stock 2k and 2002(12212156)starting at the bottom, made it all the way to trans control. I notice no problems. Some of the 2002 tables were not even in the 2k .tun file. Some of the 2k tables starting with trans control were really strangely populated. I think I'm just going to leave the TC and EC settings at the 2002 settings. This 2002 tune is for EXACTLY the same combination. I still can't figure out why the message center had the "blinkn battry".

Thanks for your help,
S

[joecar]

Oh, yes, I am...

Oh, ok, P1368 was it... cool...

[LinearX]

If anyone is interested, here is what the code means.

http://www.gearchatter.com/viewtopic10124.php

Bear in mind, this is from a Corvette, but the same applies. I did this same OS upgrade with a friend's 2000 Silverado and we had the same issue with the battery light blinking. Disabling this DTC will prevent the light from coming on in the event of a charging failure, so be sure to keep an eye on your volt meter.

[acomp917]

Thanks LinearX,

Figured that would probably disable the alt. warning even though I didn't have the theory.

Did you have to disable the DTC? or was there another solution.

S




Oh(io), and Joecar

Don't be a British Dude!

[LinearX]

Thanks LinearX,

Figured that would probably disable the alt. warning even though I didn't have the theory.

Did you have to disable the DTC? or was there another solution.

Yes, we disabled the DTC.

http://www.ls1truck.com/forums/pcm-t...html#post19697

That is the only real solution that I found that will enable you to keep the DTC active. At this point, my friend isn't too concerned about it so I just left the DTC disabled.