I have a 05 duramax that has the edge w/ attitude programer and banks exhaust with a a.f.e. intake.......alot of problems have accured but the most recent is after exchanging the edge chip because of alot of problems I am still experiecing a huge "limp" problem no matter what setting I am running..... the question is will a fass pump stop the problem or will I be pissing more money in the wind........ I have had the updates from GM but it has done nothing to stop the limping....any suggestions

check out the tranny forum and use the search feature, tons of info there.

I have a 05 duramax that has the edge w/ attitude programer and banks exhaust with a a.f.e. intake.......alot of problems have accured but the most recent is after exchanging the edge chip because of alot of problems I am still experiecing a huge "limp" problem no matter what setting I am running..... the question is will a fass pump stop the problem or will I be pissing more money in the wind........ I have had the updates from GM but it has done nothing to stop the limping....any suggestions

Could be a bad NSBU switch on the side of the Allison (Neutral Safety Back Up)
They will cause symtoms like a big limp. It will also cause your gearshift indicator to go goofy. Not sure if the 05 acts similar to the 01 which I had.