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guys ive tried everything...intake gaskets plugs wires the whole nine. shakes bad at idle and clears up somewhat while reving. i did notice when you unplug the white connector on the driver side the...

11316loaded this into a buddys rollback and its a dog off the line almost like the vane tables are screwed up...i dont know enough to tell.

update! so cook nailed it! put the fuse in the liftpump fuse spot and it flashed first time! thanks so much fellas for the input truck runs so much better.....

ok cool thanks man that may be my problem. As soon as i get off work im gonna give this a shot!

ok will do...remind me how i upgrade the v-2???

Yes i do have the double fuse tap its an air dog 150. I will try that tomorrow but like i said i usually just pull it to keep the pump from running! You think that fuse would cause it to not read...

Yes i am....i might add that in the past if i was in a hurry with the stock motor i would flash it with the pump running and still had no probs!

Any advice here guys ive tried everything....

Ok so I was able to get it to record data...I'm at 13.9 volts and no codes issue related. Tried to flash the tune again and no bueno! Same shit...

yea, i have only seen it one time so i cant remember what it said...let me run out there real quick and ill let you know! thanks

Its a new optima i had sitting around...had it tested and checked out fine, starts the truck fine im only running one battery though. ive tried putting a charger on it before i flash it but the...

I would love to get this right if possible this is a freash built motor with big twins and 100 overs and seems to only be making about 575hp and i know its got a safe 200 more in it if i could get a...

I cant get it to record any data in the scan side i cant remember right off what it says but it wont let me log at all. I always unplug my liftpump and kill the lights when i turn the switch on so...

Trying to flash a tune i have and during the reflash red letters will pop up and say ''battery voltage to low or high for reflash''. Then a window will pop up and say the ecm has no O.S try a full...

its a vortec 4.3 so i think it just has a black box stlye pcm...hes not trying to hot rof this thing he just wants it to run!!! so just whatever i need to do that theres not gonna be any custom...

Can anybody help me out with this?? We were trying to keep this as simple as possible if we changed the pcm we would have to get another harness and do a lot of pin out work!!! Its kinda a budget...

yea 4l60e for the tranny would rather stay with the pcm we have if possible....

hey guys new to the thread had a couple of questions....a good friend of mine is swapping a 2000 vortec 4.3 into an early model (early 80's) and just wants it to run and thats it!!!! No security,...