|12-25-2009, 06:27 PM||eBay Motors #1 (permalink)|
Join Date: Dec 2009
I just searched the archives for info on this code and still don't have all the answers I need.
My truck is a 2006 Silverado with the Allison Automatic. I currently display code U0101 which returns almost immediately after clearing it.
The tranny shifts fine thru all the gears when in the automatic mode but will not shift manually.
I bought a used TCM (transmission control module} and installed it ,but that did not solve the problem.
Question 1. Does the computer need to be flashed by the dealer EVERY TIME a new TCM is installed?
Question 2.Has anyone else on this forum experienced the same problem,and if so what was the solution?
|12-25-2009, 07:27 PM||eBay Motors #2 (permalink)|
Join Date: Oct 2005
Check battery voltage, make sure they are in good shape and charged. Do you have any aftermarket remote start on the truck? If so remove and then test.
2007 LBZ tow rig/Daily driver, stock engine 11.70 @ 115mph on #2, 677 HP, MPI Twins
23.5 MPG Diesel Power Challenge 2008
2002 LB7 Max'd Out 9.71@141+MPH on #2 fuel only, MPI Twins
EFI Live, Suncoast Dealer, Dmax Hotrod Parts
Adrenaline Truck Performance 208.484.3670
|12-25-2009, 08:26 PM||eBay Motors #4 (permalink)|
Join Date: Jun 2008
Location: So. Cal
Not a good idea to only replace one battery-- the weaker will pull the good battery down -- so you will have two weak batteries.
The batteries are wired together to make one big battery. You should reconsider and replace the old one.
Chevy 04.5 LLY, 2X, shell, XDR, MikeL Heavy duty up-grade, 6spd, TransGo, deep pan, blocked, fingered, de-badged, PCV, 65 Gallon replacement Aero tank, PPE on 2, LBZ-mp, Kennedy pump, shimmed, Pre-fuel filter, tow mirrors, BU cam, gauges, GPS, Sirius, bags, custom grille, fender vents, HD trans cooler- Curt front hitch, footwell lights, load lights, Studs, head gaskets.--- Jerry