upgrading o.s. ?

[smslyguy]

i updated my 2000 gmc p.c.m to a 2001 o.s. and now after doing the complete reflash my battery ligh in the message center keeps blinking. I know it has nothing to do with the batter or the alternator cause there is a volt gauge on this truck.

Any clue as to why it flashes the battery light in the message center?

[Lextech]

Open your tune and check under System and see if the ALT L and F settings are different. I am not sure if the System Parameters table is editable or is only for our information. If both tunes have different ALT Terminal settings--Try to edit the Parameters. Let us know how it goes.

Jeff

[smslyguy]

Open your tune and check under System and see if the ALT L and F settings are different. I am not sure if the System Parameters table is editable or is only for our information. If both tunes have different ALT Terminal settings--Try to edit the Parameters. Let us know how it goes.

Jeff

where in a tune is the "system" located? Do you mean right when you open the tune under calibration? And aslo what is the alt L and F settings? Sorry newbie here.

[smslyguy]

Open your tune and check under System and see if the ALT L and F settings are different. I am not sure if the System Parameters table is editable or is only for our information. If both tunes have different ALT Terminal settings--Try to edit the Parameters. Let us know how it goes.

Jeff

just figured it out after comparing both tunes i did see that the 2001 o.s did infact have an f terminal and the 2000 did not. i will reload the tune and see if this cures the prob. I did however, notice that the o.s i upgraded to is only for a 2wd and i do have a 4wd don't know if this at all matters or not???

[joecar]

Look at G1206 and G1207.

[Lextech]

Joe,
Is G1207 an editable table or is it just for information purposes?

Jeff

[joecar]

G1206 tells you which row in G1207 the PCM chooses...

G1206 seems to be editable in my tunetool.

[smslyguy]

G1206 tells you which row in G1207 the PCM chooses...

G1206 seems to be editable in my tunetool.

yes i did edit mine for the f terminal and i reloaded the tune, but i am still seeing the battery light flashing in the message center.

[acomp917]

Hello All,

Did anyone ever figure this out?

I'm having the same problem with a 2000 to 2002 flash. I have done a complete PCM pinout on both and an alternator part number lookup for both. Everything is the same. That only leaves the dash message center(unless I missed something).

I have yet to change the g1207 table. It was late. I will post my conclusion.

S

[joecar]

acomp917/S,

Post your tune files.

[acomp917]

joecar,

I already posted the .tun to genIII area, under the 2k silverado blinking battery... or something like that. I just posted here as an attempt to get the attention of the original poster. I will post the final outcome here, to help others.

S

[joecar]

I found it.

[acomp917]

To All,

I had the same problem with a 2000 to 2002 full flash to 12212156.

I just fixed it by setting it to "not reported" in p1638. I also set g1297 to "no" under gmt800/ alternator f terminal. I don't know if there are other problems because of that. Will post any further problems.

S